From pete at soper.us Fri Jun 2 10:07:03 2023 From: pete at soper.us (Peter Soper) Date: Fri, 2 Jun 2023 11:07:03 -0400 (EDT) Subject: [TriEmbed] Raspberry Pi expected to become more available Message-ID: <7ef3258a-6261-4493-b348-3759deb526c3@soper.us> CEO: Raspberry Pi stock to hit 1M units monthly, starting in July - https://arstechnica.com/gadgets/2023/06/ceo-raspberry-pi-inventory-to-hit-1m-units-monthly-starting-in-july/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From jonjwolfe at anibit.com Fri Jun 2 13:51:05 2023 From: jonjwolfe at anibit.com (Jon Wolfe) Date: Fri, 2 Jun 2023 14:51:05 -0400 Subject: [TriEmbed] Raspberry Pi expected to become more available In-Reply-To: <7ef3258a-6261-4493-b348-3759deb526c3@soper.us> References: <7ef3258a-6261-4493-b348-3759deb526c3@soper.us> Message-ID: YES!!!! I had the luck to stock up with some spares before the Pandemic hit, and I've been guarding my precious treasure ever since, paranoid one of my existing ones would die, and force me to pay extortion/scalper prices to replace it. On 6/2/2023 11:07 AM, Peter Soper via TriEmbed wrote: > CEO: Raspberry Pi stock to hit 1M units monthly, starting in July - > https://arstechnica.com/gadgets/2023/06/ceo-raspberry-pi-inventory-to-hit-1m-units-monthly-starting-in-july/ > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message:TriEmbed at triembed.org > List info:http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site:https://TriEmbed.org > To unsubscribe, click link and send a blank message:mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available athttps://www.mail-archive.com/triembed at triembed.org/ > -------------- next part -------------- An HTML attachment was scrubbed... URL: From pete at soper.us Sat Jun 3 12:50:45 2023 From: pete at soper.us (Pete soper) Date: Sat, 3 Jun 2023 13:50:45 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux Message-ID: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> He made his solder stencil with a laser cutter and the BOM runs around $3. https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ From jwet at mindspring.com Sun Jun 4 07:09:40 2023 From: jwet at mindspring.com (John Wettroth) Date: Sun, 4 Jun 2023 08:09:40 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux In-Reply-To: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> References: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> Message-ID: <000001d996dd$70e27b50$52a771f0$@mindspring.com> I've played with this with standard transparency film and a little 40w Chinese laser- takes a bit of tuning to get it all correct but works. Stencils are really cheap when you order a board if you remember. Regards, John M. Wettroth E: jwet at mindspring.com M: (919) 349-9875 H: (984) 329-5420 -----Original Message----- From: TriEmbed On Behalf Of Pete soper via TriEmbed Sent: Saturday, June 3, 2023 1:51 PM To: Triangle Embedded Interest Group Subject: [TriEmbed] a full custom biz card that runs Linux He made his solder stencil with a laser cutter and the BOM runs around $3. https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ _______________________________________________ Triangle, NC Embedded Interest Group mailing list To post message: TriEmbed at triembed.org List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org TriEmbed web site: https://TriEmbed.org To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ From pete at soper.us Sun Jun 4 11:40:14 2023 From: pete at soper.us (Pete soper) Date: Sun, 4 Jun 2023 12:40:14 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux In-Reply-To: <000001d996dd$70e27b50$52a771f0$@mindspring.com> References: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> <000001d996dd$70e27b50$52a771f0$@mindspring.com> Message-ID: <997c1b0d-33c9-e222-f02b-dfd8837ae965@soper.us> About 10 years ago OSH Stencils started out selling stencils made of kapton. The kapton came on rolls and there was curvature in the stencils such that 80% of the hassle of applying paste was holding the stencil down as flat as possible. For fine pitch parts it was a serious PITA. I was told kapton was used because it would cut cleanly. After Matt (owner) had shipped a zillion kapton stencils he could afford a serious laser cutter to offer stainless steel. For me this was a cause for major celebration. The time with the kapton was when stainless steel stencils from other sources were expensive. Now they are? cheap, as you noted John. A lot of the stencils I get from Matt are $10. A hobbyist might flinch at this cost, but IMO it's a small price to pay for the ability to actually assemble a board vs imagining that one can do it by manually putting paste to board. One can't actually manually put paste to board reliably for small parts. :-) Again, my focus is on small pitch parts as these have become a fact of life and avoiding them imposes a very heavy constraint on design. I'm preparing to make a flexible board for a sensor that has 10 pads around it's sides underneath and is 1.8x2.0mm overall. That takes a good stencil. :-) A plastic that is dead flat to begin with and that doesn't go bonkers with a laser (i.e. that can be cut cleanly without the edges swelling) would IMO make for a cottage industry for somebody because they could beat the stainless steel prices and perhaps offer comparable quality results. But I'd have to see such a plastic stencil under my microscope to be convinced that it can actually compete with stainless steel. My 'scope has a very good camera and I'd be happy to take pictures to share with the group so we could see what the apertures look like close up. ("Aperture" is the 50 cent term for the mostly square corner holes in a stencil.) Pete On 6/4/23 08:09, John Wettroth via TriEmbed wrote: > I've played with this with standard transparency film and a little 40w Chinese > laser- takes a bit of tuning to get it all correct but works. Stencils are > really cheap when you order a board if you remember. > > Regards, > John M. Wettroth > E: jwet at mindspring.com > M: (919) 349-9875 > H: (984) 329-5420 > > -----Original Message----- > From: TriEmbed On Behalf Of Pete soper via > TriEmbed > Sent: Saturday, June 3, 2023 1:51 PM > To: Triangle Embedded Interest Group > Subject: [TriEmbed] a full custom biz card that runs Linux > > He made his solder stencil with a laser cutter and the BOM runs around $3. > > https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: > mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ > From jwet at mindspring.com Sun Jun 4 13:01:31 2023 From: jwet at mindspring.com (John Wettroth) Date: Sun, 4 Jun 2023 14:01:31 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux In-Reply-To: <997c1b0d-33c9-e222-f02b-dfd8837ae965@soper.us> References: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> <000001d996dd$70e27b50$52a771f0$@mindspring.com> <997c1b0d-33c9-e222-f02b-dfd8837ae965@soper.us> Message-ID: <002401d9970e$9860b030$c9221090$@mindspring.com> I think everyone experiments with SMT assembly to get to something that works. I used a little Chinese clone pneumatic dispenser that pushed out paste through a blunt needle- its fine for small board if you can pull an airline into your lab. The only designator is 983A, it must be a copy of something made by Hakko or Plato, etc.- I still use it but its only suited for really simple boards. Hitting pads on a 300 pin BGA or a few hundred R's and C's is no fun. Metal stencils are the way to go, they work so well- plastic does work but past can go under them pretty easily. The only problem I have now is keeping solder paste from going bad and turning to concrete. I have a little beer fridge in my lab and keep it in there which help. I bring it up to room temp and if its too stiff, add a little Isopropyl- I don't go strictly by the expire dates- I can use it for 2 years or so though it might expire at 6 mos. You can also put a little bit of liquid flux in it to liven it up. It fails somewhat gracefully, you can do a test run and see if it will reflow without committing a bunch of boards. I guess the original point of that post is the guy built a Linux box on a biz car- that's pretty cool. I jumped to your stencil comment. Regards, John M. Wettroth E: jwet at mindspring.com M: (919) 349-9875 H: (984) 329-5420 -----Original Message----- From: TriEmbed On Behalf Of Pete soper via TriEmbed Sent: Sunday, June 4, 2023 12:40 PM To: triembed at triembed.org Subject: Re: [TriEmbed] a full custom biz card that runs Linux About 10 years ago OSH Stencils started out selling stencils made of kapton. The kapton came on rolls and there was curvature in the stencils such that 80% of the hassle of applying paste was holding the stencil down as flat as possible. For fine pitch parts it was a serious PITA. I was told kapton was used because it would cut cleanly. After Matt (owner) had shipped a zillion kapton stencils he could afford a serious laser cutter to offer stainless steel. For me this was a cause for major celebration. The time with the kapton was when stainless steel stencils from other sources were expensive. Now they are cheap, as you noted John. A lot of the stencils I get from Matt are $10. A hobbyist might flinch at this cost, but IMO it's a small price to pay for the ability to actually assemble a board vs imagining that one can do it by manually putting paste to board. One can't actually manually put paste to board reliably for small parts. :-) Again, my focus is on small pitch parts as these have become a fact of life and avoiding them imposes a very heavy constraint on design. I'm preparing to make a flexible board for a sensor that has 10 pads around it's sides underneath and is 1.8x2.0mm overall. That takes a good stencil. :-) A plastic that is dead flat to begin with and that doesn't go bonkers with a laser (i.e. that can be cut cleanly without the edges swelling) would IMO make for a cottage industry for somebody because they could beat the stainless steel prices and perhaps offer comparable quality results. But I'd have to see such a plastic stencil under my microscope to be convinced that it can actually compete with stainless steel. My 'scope has a very good camera and I'd be happy to take pictures to share with the group so we could see what the apertures look like close up. ("Aperture" is the 50 cent term for the mostly square corner holes in a stencil.) Pete On 6/4/23 08:09, John Wettroth via TriEmbed wrote: > I've played with this with standard transparency film and a little 40w Chinese > laser- takes a bit of tuning to get it all correct but works. Stencils are > really cheap when you order a board if you remember. > > Regards, > John M. Wettroth > E: jwet at mindspring.com > M: (919) 349-9875 > H: (984) 329-5420 > > -----Original Message----- > From: TriEmbed On Behalf Of Pete soper via > TriEmbed > Sent: Saturday, June 3, 2023 1:51 PM > To: Triangle Embedded Interest Group > Subject: [TriEmbed] a full custom biz card that runs Linux > > He made his solder stencil with a laser cutter and the BOM runs around $3. > > https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: > mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ > _______________________________________________ Triangle, NC Embedded Interest Group mailing list To post message: TriEmbed at triembed.org List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org TriEmbed web site: https://TriEmbed.org To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ From pete at soper.us Sun Jun 4 15:43:00 2023 From: pete at soper.us (Pete soper) Date: Sun, 4 Jun 2023 16:43:00 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux In-Reply-To: <002401d9970e$9860b030$c9221090$@mindspring.com> References: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> <000001d996dd$70e27b50$52a771f0$@mindspring.com> <997c1b0d-33c9-e222-f02b-dfd8837ae965@soper.us> <002401d9970e$9860b030$c9221090$@mindspring.com> Message-ID: <495b8048-ae30-977a-7290-a701ef783b11@soper.us> Wow, John. It never occurred to me to turn solder paste into "solder paint"!? Does that really work for you for .5mm centered QFNs? Pete On 6/4/23 14:01, John Wettroth wrote: > I think everyone experiments with SMT assembly to get to something that works. I used a little Chinese clone pneumatic dispenser that pushed out paste through a blunt needle- its fine for small board if you can pull an airline into your lab. The only designator is 983A, it must be a copy of something made by Hakko or Plato, etc.- I still use it but its only suited for really simple boards. Hitting pads on a 300 pin BGA or a few hundred R's and C's is no fun. Metal stencils are the way to go, they work so well- plastic does work but past can go under them pretty easily. The only problem I have now is keeping solder paste from going bad and turning to concrete. I have a little beer fridge in my lab and keep it in there which help. I bring it up to room temp and if its too stiff, add a little Isopropyl- I don't go strictly by the expire dates- I can use it for 2 years or so though it might expire at 6 mos. You can also put a little bit of liquid flux in it to liven it up. It fails somewhat gracefully, you can do a test run and see if it will reflow without committing a bunch of boards. > > I guess the original point of that post is the guy built a Linux box on a biz car- that's pretty cool. I jumped to your stencil comment. > > Regards, > John M. Wettroth > E: jwet at mindspring.com > M: (919) 349-9875 > H: (984) 329-5420 > > -----Original Message----- > From: TriEmbed On Behalf Of Pete soper via TriEmbed > Sent: Sunday, June 4, 2023 12:40 PM > To: triembed at triembed.org > Subject: Re: [TriEmbed] a full custom biz card that runs Linux > > About 10 years ago OSH Stencils started out selling stencils made of > kapton. The kapton came on rolls and there was curvature in the stencils > such that 80% of the hassle of applying paste was holding the stencil > down as flat as possible. For fine pitch parts it was a serious PITA. I > was told kapton was used because it would cut cleanly. After Matt > (owner) had shipped a zillion kapton stencils he could afford a serious > laser cutter to offer stainless steel. For me this was a cause for major > celebration. The time with the kapton was when stainless steel stencils > from other sources were expensive. Now they are cheap, as you noted > John. A lot of the stencils I get from Matt are $10. A hobbyist might > flinch at this cost, but IMO it's a small price to pay for the ability > to actually assemble a board vs imagining that one can do it by manually > putting paste to board. One can't actually manually put paste to board > reliably for small parts. :-) Again, my focus is on small pitch parts as > these have become a fact of life and avoiding them imposes a very heavy > constraint on design. I'm preparing to make a flexible board for a > sensor that has 10 pads around it's sides underneath and is 1.8x2.0mm > overall. That takes a good stencil. :-) > > A plastic that is dead flat to begin with and that doesn't go bonkers > with a laser (i.e. that can be cut cleanly without the edges swelling) > would IMO make for a cottage industry for somebody because they could > beat the stainless steel prices and perhaps offer comparable quality > results. But I'd have to see such a plastic stencil under my microscope > to be convinced that it can actually compete with stainless steel. My > 'scope has a very good camera and I'd be happy to take pictures to share > with the group so we could see what the apertures look like close up. > ("Aperture" is the 50 cent term for the mostly square corner holes in a > stencil.) > > Pete > > On 6/4/23 08:09, John Wettroth via TriEmbed wrote: >> I've played with this with standard transparency film and a little 40w Chinese >> laser- takes a bit of tuning to get it all correct but works. Stencils are >> really cheap when you order a board if you remember. >> >> Regards, >> John M. Wettroth >> E: jwet at mindspring.com >> M: (919) 349-9875 >> H: (984) 329-5420 >> >> -----Original Message----- >> From: TriEmbed On Behalf Of Pete soper via >> TriEmbed >> Sent: Saturday, June 3, 2023 1:51 PM >> To: Triangle Embedded Interest Group >> Subject: [TriEmbed] a full custom biz card that runs Linux >> >> He made his solder stencil with a laser cutter and the BOM runs around $3. >> >> https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ >> >> >> _______________________________________________ >> Triangle, NC Embedded Interest Group mailing list >> >> To post message: TriEmbed at triembed.org >> List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org >> TriEmbed web site: https://TriEmbed.org >> To unsubscribe, click link and send a blank message: >> mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe >> Searchable email archive available at >> https://www.mail-archive.com/triembed at triembed.org/ >> >> >> _______________________________________________ >> Triangle, NC Embedded Interest Group mailing list >> >> To post message: TriEmbed at triembed.org >> List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org >> TriEmbed web site: https://TriEmbed.org >> To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe >> Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ >> > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ > > From trampas at gmail.com Sun Jun 4 18:13:51 2023 From: trampas at gmail.com (Trampas Stern) Date: Sun, 4 Jun 2023 19:13:51 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux In-Reply-To: <495b8048-ae30-977a-7290-a701ef783b11@soper.us> References: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> <000001d996dd$70e27b50$52a771f0$@mindspring.com> <997c1b0d-33c9-e222-f02b-dfd8837ae965@soper.us> <002401d9970e$9860b030$c9221090$@mindspring.com> <495b8048-ae30-977a-7290-a701ef783b11@soper.us> Message-ID: I do SMT boards all the time. I order PCBs with stainless stencils from JLCPCB, www.jlcpcb.com. I normally order 4-6 layer double sided boards. 10 boards with two stencils are around $50. Then shipping to US is $50. I normally get boards in about 7-10 days I use a stencil printer from NeoDen, then use Manncorp pick and place machine to place the 'jelly bean' parts. Then hand place other parts. After which I use a custom made reflow oven. I have tried countless stencil printers and reflow methods and ovens, and soldering irons,etc. As such if anyone has questions I can help answer them. Trampas On Sun, Jun 4, 2023, 4:43 PM Pete soper via TriEmbed wrote: > Wow, John. It never occurred to me to turn solder paste into "solder > paint"! Does that really work for you for .5mm centered QFNs? > > Pete > > On 6/4/23 14:01, John Wettroth wrote: > > I think everyone experiments with SMT assembly to get to something that > works. I used a little Chinese clone pneumatic dispenser that pushed out > paste through a blunt needle- its fine for small board if you can pull an > airline into your lab. The only designator is 983A, it must be a copy of > something made by Hakko or Plato, etc.- I still use it but its only suited > for really simple boards. Hitting pads on a 300 pin BGA or a few hundred > R's and C's is no fun. Metal stencils are the way to go, they work so > well- plastic does work but past can go under them pretty easily. The only > problem I have now is keeping solder paste from going bad and turning to > concrete. I have a little beer fridge in my lab and keep it in there which > help. I bring it up to room temp and if its too stiff, add a little > Isopropyl- I don't go strictly by the expire dates- I can use it for 2 > years or so though it might expire at 6 mos. You can also put a little bit > of liquid flux in it to liven it up. It fails somewhat gracefully, you can > do a test run and see if it will reflow without committing a bunch of > boards. > > > > I guess the original point of that post is the guy built a Linux box on > a biz car- that's pretty cool. I jumped to your stencil comment. > > > > Regards, > > John M. Wettroth > > E: jwet at mindspring.com > > M: (919) 349-9875 > > H: (984) 329-5420 > > > > -----Original Message----- > > From: TriEmbed On Behalf Of Pete soper > via TriEmbed > > Sent: Sunday, June 4, 2023 12:40 PM > > To: triembed at triembed.org > > Subject: Re: [TriEmbed] a full custom biz card that runs Linux > > > > About 10 years ago OSH Stencils started out selling stencils made of > > kapton. The kapton came on rolls and there was curvature in the stencils > > such that 80% of the hassle of applying paste was holding the stencil > > down as flat as possible. For fine pitch parts it was a serious PITA. I > > was told kapton was used because it would cut cleanly. After Matt > > (owner) had shipped a zillion kapton stencils he could afford a serious > > laser cutter to offer stainless steel. For me this was a cause for major > > celebration. The time with the kapton was when stainless steel stencils > > from other sources were expensive. Now they are cheap, as you noted > > John. A lot of the stencils I get from Matt are $10. A hobbyist might > > flinch at this cost, but IMO it's a small price to pay for the ability > > to actually assemble a board vs imagining that one can do it by manually > > putting paste to board. One can't actually manually put paste to board > > reliably for small parts. :-) Again, my focus is on small pitch parts as > > these have become a fact of life and avoiding them imposes a very heavy > > constraint on design. I'm preparing to make a flexible board for a > > sensor that has 10 pads around it's sides underneath and is 1.8x2.0mm > > overall. That takes a good stencil. :-) > > > > A plastic that is dead flat to begin with and that doesn't go bonkers > > with a laser (i.e. that can be cut cleanly without the edges swelling) > > would IMO make for a cottage industry for somebody because they could > > beat the stainless steel prices and perhaps offer comparable quality > > results. But I'd have to see such a plastic stencil under my microscope > > to be convinced that it can actually compete with stainless steel. My > > 'scope has a very good camera and I'd be happy to take pictures to share > > with the group so we could see what the apertures look like close up. > > ("Aperture" is the 50 cent term for the mostly square corner holes in a > > stencil.) > > > > Pete > > > > On 6/4/23 08:09, John Wettroth via TriEmbed wrote: > >> I've played with this with standard transparency film and a little 40w > Chinese > >> laser- takes a bit of tuning to get it all correct but works. Stencils > are > >> really cheap when you order a board if you remember. > >> > >> Regards, > >> John M. Wettroth > >> E: jwet at mindspring.com > >> M: (919) 349-9875 > >> H: (984) 329-5420 > >> > >> -----Original Message----- > >> From: TriEmbed On Behalf Of Pete soper > via > >> TriEmbed > >> Sent: Saturday, June 3, 2023 1:51 PM > >> To: Triangle Embedded Interest Group > >> Subject: [TriEmbed] a full custom biz card that runs Linux > >> > >> He made his solder stencil with a laser cutter and the BOM runs around > $3. > >> > >> > https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ > >> > >> > >> _______________________________________________ > >> Triangle, NC Embedded Interest Group mailing list > >> > >> To post message: TriEmbed at triembed.org > >> List info: > http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > >> TriEmbed web site: https://TriEmbed.org > >> To unsubscribe, click link and send a blank message: > >> mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > >> Searchable email archive available at > >> https://www.mail-archive.com/triembed at triembed.org/ > >> > >> > >> _______________________________________________ > >> Triangle, NC Embedded Interest Group mailing list > >> > >> To post message: TriEmbed at triembed.org > >> List info: > http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > >> TriEmbed web site: https://TriEmbed.org > >> To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > >> Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > >> > > _______________________________________________ > > Triangle, NC Embedded Interest Group mailing list > > > > To post message: TriEmbed at triembed.org > > List info: > http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > > TriEmbed web site: https://TriEmbed.org > > To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From jwet at mindspring.com Sun Jun 4 18:19:09 2023 From: jwet at mindspring.com (John Wettroth) Date: Sun, 4 Jun 2023 19:19:09 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux In-Reply-To: <495b8048-ae30-977a-7290-a701ef783b11@soper.us> References: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> <000001d996dd$70e27b50$52a771f0$@mindspring.com> <997c1b0d-33c9-e222-f02b-dfd8837ae965@soper.us> <002401d9970e$9860b030$c9221090$@mindspring.com> <495b8048-ae30-977a-7290-a701ef783b11@soper.us> Message-ID: <002b01d9973a$f7936670$e6ba3350$@mindspring.com> Don't go overboard- you want thin mayonnaise or mustard, if it's like peanut butter or worse, its on its way out- IPA works good. You have nothing to lose. Any room temp polar solvent will work-Acetone, methanol, DMSO. No Xylene, Toluene or Naptha- non polar petroleum distillates are trouble- you want O's and H's, not C's an H's. IPA will boil off quickly even at room temp. If I'm doing serious work for a real project, I'd buy some fresh stock, but if you get stuck, try it. Regards, John M. Wettroth E: jwet at mindspring.com M: (919) 349-9875 H: (984) 329-5420 -----Original Message----- From: TriEmbed On Behalf Of Pete soper via TriEmbed Sent: Sunday, June 4, 2023 4:43 PM To: triembed at triembed.org Subject: Re: [TriEmbed] a full custom biz card that runs Linux Wow, John. It never occurred to me to turn solder paste into "solder paint"! Does that really work for you for .5mm centered QFNs? Pete On 6/4/23 14:01, John Wettroth wrote: > I think everyone experiments with SMT assembly to get to something that works. I used a little Chinese clone pneumatic dispenser that pushed out paste through a blunt needle- its fine for small board if you can pull an airline into your lab. The only designator is 983A, it must be a copy of something made by Hakko or Plato, etc.- I still use it but its only suited for really simple boards. Hitting pads on a 300 pin BGA or a few hundred R's and C's is no fun. Metal stencils are the way to go, they work so well- plastic does work but past can go under them pretty easily. The only problem I have now is keeping solder paste from going bad and turning to concrete. I have a little beer fridge in my lab and keep it in there which help. I bring it up to room temp and if its too stiff, add a little Isopropyl- I don't go strictly by the expire dates- I can use it for 2 years or so though it might expire at 6 mos. You can also put a little bit of liquid flux in it to liven it up. It fails somewhat gracefully, you can do a test run and see if it will reflow without committing a bunch of boards. > > I guess the original point of that post is the guy built a Linux box on a biz car- that's pretty cool. I jumped to your stencil comment. > > Regards, > John M. Wettroth > E: jwet at mindspring.com > M: (919) 349-9875 > H: (984) 329-5420 > > -----Original Message----- > From: TriEmbed On Behalf Of Pete soper via TriEmbed > Sent: Sunday, June 4, 2023 12:40 PM > To: triembed at triembed.org > Subject: Re: [TriEmbed] a full custom biz card that runs Linux > > About 10 years ago OSH Stencils started out selling stencils made of > kapton. The kapton came on rolls and there was curvature in the stencils > such that 80% of the hassle of applying paste was holding the stencil > down as flat as possible. For fine pitch parts it was a serious PITA. I > was told kapton was used because it would cut cleanly. After Matt > (owner) had shipped a zillion kapton stencils he could afford a serious > laser cutter to offer stainless steel. For me this was a cause for major > celebration. The time with the kapton was when stainless steel stencils > from other sources were expensive. Now they are cheap, as you noted > John. A lot of the stencils I get from Matt are $10. A hobbyist might > flinch at this cost, but IMO it's a small price to pay for the ability > to actually assemble a board vs imagining that one can do it by manually > putting paste to board. One can't actually manually put paste to board > reliably for small parts. :-) Again, my focus is on small pitch parts as > these have become a fact of life and avoiding them imposes a very heavy > constraint on design. I'm preparing to make a flexible board for a > sensor that has 10 pads around it's sides underneath and is 1.8x2.0mm > overall. That takes a good stencil. :-) > > A plastic that is dead flat to begin with and that doesn't go bonkers > with a laser (i.e. that can be cut cleanly without the edges swelling) > would IMO make for a cottage industry for somebody because they could > beat the stainless steel prices and perhaps offer comparable quality > results. But I'd have to see such a plastic stencil under my microscope > to be convinced that it can actually compete with stainless steel. My > 'scope has a very good camera and I'd be happy to take pictures to share > with the group so we could see what the apertures look like close up. > ("Aperture" is the 50 cent term for the mostly square corner holes in a > stencil.) > > Pete > > On 6/4/23 08:09, John Wettroth via TriEmbed wrote: >> I've played with this with standard transparency film and a little 40w Chinese >> laser- takes a bit of tuning to get it all correct but works. Stencils are >> really cheap when you order a board if you remember. >> >> Regards, >> John M. Wettroth >> E: jwet at mindspring.com >> M: (919) 349-9875 >> H: (984) 329-5420 >> >> -----Original Message----- >> From: TriEmbed On Behalf Of Pete soper via >> TriEmbed >> Sent: Saturday, June 3, 2023 1:51 PM >> To: Triangle Embedded Interest Group >> Subject: [TriEmbed] a full custom biz card that runs Linux >> >> He made his solder stencil with a laser cutter and the BOM runs around $3. >> >> https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ >> >> >> _______________________________________________ >> Triangle, NC Embedded Interest Group mailing list >> >> To post message: TriEmbed at triembed.org >> List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org >> TriEmbed web site: https://TriEmbed.org >> To unsubscribe, click link and send a blank message: >> mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe >> Searchable email archive available at >> https://www.mail-archive.com/triembed at triembed.org/ >> >> >> _______________________________________________ >> Triangle, NC Embedded Interest Group mailing list >> >> To post message: TriEmbed at triembed.org >> List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org >> TriEmbed web site: https://TriEmbed.org >> To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe >> Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ >> > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ > > _______________________________________________ Triangle, NC Embedded Interest Group mailing list To post message: TriEmbed at triembed.org List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org TriEmbed web site: https://TriEmbed.org To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ From jwet at mindspring.com Sun Jun 4 18:30:06 2023 From: jwet at mindspring.com (John Wettroth) Date: Sun, 4 Jun 2023 19:30:06 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux In-Reply-To: References: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> <000001d996dd$70e27b50$52a771f0$@mindspring.com> <997c1b0d-33c9-e222-f02b-dfd8837ae965@soper.us> <002401d9970e$9860b030$c9221090$@mindspring.com> <495b8048-ae30-977a-7290-a701ef783b11@soper.us> Message-ID: <003101d9973c$7f9b5ae0$7ed210a0$@mindspring.com> Thanks Trampas- I experimented a lot over the years too but have slowed down somewhat in my dotage. I worked for Maxim from NC and went out west monthly- they had the real stuff ++ but monthly was too long. I was hacking around mostly with RF stuff done on an LPKF CNC board grinder which I still use- bought new in the mid 90?s and upgraded a few times. RF requires so much iteration that even a Chinese vendor doesn?t give the kind of turnaround require for a good workflow. A few boards a day is common. The boards tend to be simple, playing with some sub-circuit, etc. Sometimes on exotic substrates like Rogers- hard to get quick turn. I paid $10k for this LPKF and probably never gotten my money out of it even boards were a few hundred bucks. Its still fun- instant gratification. Regards, John M. Wettroth E: jwet at mindspring.com M: (919) 349-9875 H: (984) 329-5420 From: TriEmbed On Behalf Of Trampas Stern via TriEmbed Sent: Sunday, June 4, 2023 7:14 PM To: Pete soper Cc: TriEmbed Subject: Re: [TriEmbed] a full custom biz card that runs Linux I do SMT boards all the time. I order PCBs with stainless stencils from JLCPCB, www.jlcpcb.com . I normally order 4-6 layer double sided boards. 10 boards with two stencils are around $50. Then shipping to US is $50. I normally get boards in about 7-10 days I use a stencil printer from NeoDen, then use Manncorp pick and place machine to place the 'jelly bean' parts. Then hand place other parts. After which I use a custom made reflow oven. I have tried countless stencil printers and reflow methods and ovens, and soldering irons,etc. As such if anyone has questions I can help answer them. Trampas On Sun, Jun 4, 2023, 4:43 PM Pete soper via TriEmbed > wrote: Wow, John. It never occurred to me to turn solder paste into "solder paint"! Does that really work for you for .5mm centered QFNs? Pete On 6/4/23 14:01, John Wettroth wrote: > I think everyone experiments with SMT assembly to get to something that works. I used a little Chinese clone pneumatic dispenser that pushed out paste through a blunt needle- its fine for small board if you can pull an airline into your lab. The only designator is 983A, it must be a copy of something made by Hakko or Plato, etc.- I still use it but its only suited for really simple boards. Hitting pads on a 300 pin BGA or a few hundred R's and C's is no fun. Metal stencils are the way to go, they work so well- plastic does work but past can go under them pretty easily. The only problem I have now is keeping solder paste from going bad and turning to concrete. I have a little beer fridge in my lab and keep it in there which help. I bring it up to room temp and if its too stiff, add a little Isopropyl- I don't go strictly by the expire dates- I can use it for 2 years or so though it might expire at 6 mos. You can also put a little bit of liquid flux in it to liven it up. It fails somewhat gracefully, you can do a test run and see if it will reflow without committing a bunch of boards. > > I guess the original point of that post is the guy built a Linux box on a biz car- that's pretty cool. I jumped to your stencil comment. > > Regards, > John M. Wettroth > E: jwet at mindspring.com > M: (919) 349-9875 > H: (984) 329-5420 > > -----Original Message----- > From: TriEmbed > On Behalf Of Pete soper via TriEmbed > Sent: Sunday, June 4, 2023 12:40 PM > To: triembed at triembed.org > Subject: Re: [TriEmbed] a full custom biz card that runs Linux > > About 10 years ago OSH Stencils started out selling stencils made of > kapton. The kapton came on rolls and there was curvature in the stencils > such that 80% of the hassle of applying paste was holding the stencil > down as flat as possible. For fine pitch parts it was a serious PITA. I > was told kapton was used because it would cut cleanly. After Matt > (owner) had shipped a zillion kapton stencils he could afford a serious > laser cutter to offer stainless steel. For me this was a cause for major > celebration. The time with the kapton was when stainless steel stencils > from other sources were expensive. Now they are cheap, as you noted > John. A lot of the stencils I get from Matt are $10. A hobbyist might > flinch at this cost, but IMO it's a small price to pay for the ability > to actually assemble a board vs imagining that one can do it by manually > putting paste to board. One can't actually manually put paste to board > reliably for small parts. :-) Again, my focus is on small pitch parts as > these have become a fact of life and avoiding them imposes a very heavy > constraint on design. I'm preparing to make a flexible board for a > sensor that has 10 pads around it's sides underneath and is 1.8x2.0mm > overall. That takes a good stencil. :-) > > A plastic that is dead flat to begin with and that doesn't go bonkers > with a laser (i.e. that can be cut cleanly without the edges swelling) > would IMO make for a cottage industry for somebody because they could > beat the stainless steel prices and perhaps offer comparable quality > results. But I'd have to see such a plastic stencil under my microscope > to be convinced that it can actually compete with stainless steel. My > 'scope has a very good camera and I'd be happy to take pictures to share > with the group so we could see what the apertures look like close up. > ("Aperture" is the 50 cent term for the mostly square corner holes in a > stencil.) > > Pete > > On 6/4/23 08:09, John Wettroth via TriEmbed wrote: >> I've played with this with standard transparency film and a little 40w Chinese >> laser- takes a bit of tuning to get it all correct but works. Stencils are >> really cheap when you order a board if you remember. >> >> Regards, >> John M. Wettroth >> E: jwet at mindspring.com >> M: (919) 349-9875 >> H: (984) 329-5420 >> >> -----Original Message----- >> From: TriEmbed > On Behalf Of Pete soper via >> TriEmbed >> Sent: Saturday, June 3, 2023 1:51 PM >> To: Triangle Embedded Interest Group > >> Subject: [TriEmbed] a full custom biz card that runs Linux >> >> He made his solder stencil with a laser cutter and the BOM runs around $3. >> >> https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ >> >> >> _______________________________________________ >> Triangle, NC Embedded Interest Group mailing list >> >> To post message: TriEmbed at triembed.org >> List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org >> TriEmbed web site: https://TriEmbed.org >> To unsubscribe, click link and send a blank message: >> mailto:unsubscribe-TriEmbed at bitser.net ?subject=unsubscribe >> Searchable email archive available at >> https://www.mail-archive.com/triembed at triembed.org/ >> >> >> _______________________________________________ >> Triangle, NC Embedded Interest Group mailing list >> >> To post message: TriEmbed at triembed.org >> List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org >> TriEmbed web site: https://TriEmbed.org >> To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net ?subject=unsubscribe >> Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ >> > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net ?subject=unsubscribe > Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ > > _______________________________________________ Triangle, NC Embedded Interest Group mailing list To post message: TriEmbed at triembed.org List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org TriEmbed web site: https://TriEmbed.org To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net ?subject=unsubscribe Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From trampas at gmail.com Sun Jun 4 19:18:03 2023 From: trampas at gmail.com (Trampas Stern) Date: Sun, 4 Jun 2023 20:18:03 -0400 Subject: [TriEmbed] a full custom biz card that runs Linux In-Reply-To: <003101d9973c$7f9b5ae0$7ed210a0$@mindspring.com> References: <582d9f65-b8c6-1cf3-f1ab-34f00818b473@soper.us> <000001d996dd$70e27b50$52a771f0$@mindspring.com> <997c1b0d-33c9-e222-f02b-dfd8837ae965@soper.us> <002401d9970e$9860b030$c9221090$@mindspring.com> <495b8048-ae30-977a-7290-a701ef783b11@soper.us> <003101d9973c$7f9b5ae0$7ed210a0$@mindspring.com> Message-ID: RF is a different beast, not sure a stencil would help in such applications. On Sun, Jun 4, 2023, 7:30 PM John Wettroth wrote: > Thanks Trampas- I experimented a lot over the years too but have slowed > down somewhat in my dotage. I worked for Maxim from NC and went out west > monthly- they had the real stuff ++ but monthly was too long. I was > hacking around mostly with RF stuff done on an LPKF CNC board grinder which > I still use- bought new in the mid 90?s and upgraded a few times. RF > requires so much iteration that even a Chinese vendor doesn?t give the kind > of turnaround require for a good workflow. A few boards a day is common. > The boards tend to be simple, playing with some sub-circuit, etc. Sometimes > on exotic substrates like Rogers- hard to get quick turn. I paid $10k > for this LPKF and probably never gotten my money out of it even boards were > a few hundred bucks. Its still fun- instant gratification. > > > > Regards, > John M. Wettroth > > E: jwet at mindspring.com > M: (919) 349-9875 > H: (984) 329-5420 > > > > *From:* TriEmbed *On Behalf Of *Trampas > Stern via TriEmbed > *Sent:* Sunday, June 4, 2023 7:14 PM > *To:* Pete soper > *Cc:* TriEmbed > *Subject:* Re: [TriEmbed] a full custom biz card that runs Linux > > > > I do SMT boards all the time. I order PCBs with stainless stencils from > JLCPCB, www.jlcpcb.com. I normally order 4-6 layer double sided boards. > 10 boards with two stencils are around $50. Then shipping to US is $50. I > normally get boards in about 7-10 days > > > > I use a stencil printer from NeoDen, then use Manncorp pick and place > machine to place the 'jelly bean' parts. Then hand place other parts. > > After which I use a custom made reflow oven. > > > > I have tried countless stencil printers and reflow methods and ovens, and > soldering irons,etc. As such if anyone has questions I can help answer them. > > > > > > Trampas > > > > > > On Sun, Jun 4, 2023, 4:43 PM Pete soper via TriEmbed < > triembed at triembed.org> wrote: > > Wow, John. It never occurred to me to turn solder paste into "solder > paint"! Does that really work for you for .5mm centered QFNs? > > Pete > > On 6/4/23 14:01, John Wettroth wrote: > > I think everyone experiments with SMT assembly to get to something that > works. I used a little Chinese clone pneumatic dispenser that pushed out > paste through a blunt needle- its fine for small board if you can pull an > airline into your lab. The only designator is 983A, it must be a copy of > something made by Hakko or Plato, etc.- I still use it but its only suited > for really simple boards. Hitting pads on a 300 pin BGA or a few hundred > R's and C's is no fun. Metal stencils are the way to go, they work so > well- plastic does work but past can go under them pretty easily. The only > problem I have now is keeping solder paste from going bad and turning to > concrete. I have a little beer fridge in my lab and keep it in there which > help. I bring it up to room temp and if its too stiff, add a little > Isopropyl- I don't go strictly by the expire dates- I can use it for 2 > years or so though it might expire at 6 mos. You can also put a little bit > of liquid flux in it to liven it up. It fails somewhat gracefully, you can > do a test run and see if it will reflow without committing a bunch of > boards. > > > > I guess the original point of that post is the guy built a Linux box on > a biz car- that's pretty cool. I jumped to your stencil comment. > > > > Regards, > > John M. Wettroth > > E: jwet at mindspring.com > > M: (919) 349-9875 > > H: (984) 329-5420 > > > > -----Original Message----- > > From: TriEmbed On Behalf Of Pete soper > via TriEmbed > > Sent: Sunday, June 4, 2023 12:40 PM > > To: triembed at triembed.org > > Subject: Re: [TriEmbed] a full custom biz card that runs Linux > > > > About 10 years ago OSH Stencils started out selling stencils made of > > kapton. The kapton came on rolls and there was curvature in the stencils > > such that 80% of the hassle of applying paste was holding the stencil > > down as flat as possible. For fine pitch parts it was a serious PITA. I > > was told kapton was used because it would cut cleanly. After Matt > > (owner) had shipped a zillion kapton stencils he could afford a serious > > laser cutter to offer stainless steel. For me this was a cause for major > > celebration. The time with the kapton was when stainless steel stencils > > from other sources were expensive. Now they are cheap, as you noted > > John. A lot of the stencils I get from Matt are $10. A hobbyist might > > flinch at this cost, but IMO it's a small price to pay for the ability > > to actually assemble a board vs imagining that one can do it by manually > > putting paste to board. One can't actually manually put paste to board > > reliably for small parts. :-) Again, my focus is on small pitch parts as > > these have become a fact of life and avoiding them imposes a very heavy > > constraint on design. I'm preparing to make a flexible board for a > > sensor that has 10 pads around it's sides underneath and is 1.8x2.0mm > > overall. That takes a good stencil. :-) > > > > A plastic that is dead flat to begin with and that doesn't go bonkers > > with a laser (i.e. that can be cut cleanly without the edges swelling) > > would IMO make for a cottage industry for somebody because they could > > beat the stainless steel prices and perhaps offer comparable quality > > results. But I'd have to see such a plastic stencil under my microscope > > to be convinced that it can actually compete with stainless steel. My > > 'scope has a very good camera and I'd be happy to take pictures to share > > with the group so we could see what the apertures look like close up. > > ("Aperture" is the 50 cent term for the mostly square corner holes in a > > stencil.) > > > > Pete > > > > On 6/4/23 08:09, John Wettroth via TriEmbed wrote: > >> I've played with this with standard transparency film and a little 40w > Chinese > >> laser- takes a bit of tuning to get it all correct but works. Stencils > are > >> really cheap when you order a board if you remember. > >> > >> Regards, > >> John M. Wettroth > >> E: jwet at mindspring.com > >> M: (919) 349-9875 > >> H: (984) 329-5420 > >> > >> -----Original Message----- > >> From: TriEmbed On Behalf Of Pete soper > via > >> TriEmbed > >> Sent: Saturday, June 3, 2023 1:51 PM > >> To: Triangle Embedded Interest Group > >> Subject: [TriEmbed] a full custom biz card that runs Linux > >> > >> He made his solder stencil with a laser cutter and the BOM runs around > $3. > >> > >> > https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/ > >> > >> > >> _______________________________________________ > >> Triangle, NC Embedded Interest Group mailing list > >> > >> To post message: TriEmbed at triembed.org > >> List info: > http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > >> TriEmbed web site: https://TriEmbed.org > >> To unsubscribe, click link and send a blank message: > >> mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > >> Searchable email archive available at > >> https://www.mail-archive.com/triembed at triembed.org/ > >> > >> > >> _______________________________________________ > >> Triangle, NC Embedded Interest Group mailing list > >> > >> To post message: TriEmbed at triembed.org > >> List info: > http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > >> TriEmbed web site: https://TriEmbed.org > >> To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > >> Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > >> > > _______________________________________________ > > Triangle, NC Embedded Interest Group mailing list > > > > To post message: TriEmbed at triembed.org > > List info: > http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > > TriEmbed web site: https://TriEmbed.org > > To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From paulmacdnc at att.net Wed Jun 7 09:29:00 2023 From: paulmacdnc at att.net (The MacDougals) Date: Wed, 7 Jun 2023 10:29:00 -0400 Subject: [TriEmbed] Monthly Meeting 6/12 In-Reply-To: <0cb801d97e98$55e85ac0$01b91040$@att.net> References: <0a2401d9689d$7b7aa650$726ff2f0$.ref@att.net> <0a2401d9689d$7b7aa650$726ff2f0$@att.net> <0cb801d97e98$55e85ac0$01b91040$@att.net> Message-ID: <00c501d9994c$68c893c0$3a59bb40$@att.net> We will have our normal monthly meeting on Monday 6/12/23 at 7:00 pm Agenda: - Welcome - Announcements - P.O.T.M. - Show and Tell The plan for this month is to use https://meet.jit.si/TriEmbed ---> Paul -------------- next part -------------- An HTML attachment was scrubbed... URL: From pete at soper.us Wed Jun 14 14:21:14 2023 From: pete at soper.us (Peter Soper) Date: Wed, 14 Jun 2023 15:21:14 -0400 (EDT) Subject: [TriEmbed] Eagle going away as distinct software Message-ID: Effective June 7, 2026, Autodesk will no longer sell nor support EAGLE - https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Autodesk-EAGLE-Announcement-Next-steps-and-FAQ.html -------------- next part -------------- An HTML attachment was scrubbed... URL: From pete at soper.us Wed Jun 14 14:29:14 2023 From: pete at soper.us (Peter Soper) Date: Wed, 14 Jun 2023 15:29:14 -0400 (EDT) Subject: [TriEmbed] Kicad autorouting re:Eagle going away as distinct software In-Reply-To: References: Message-ID: <3f078efb-0782-4d00-a9ef-cf730a9c9776@soper.us> Some useful info for using a standalone autorouter with Kicad. https://hackaday.com/?p=585015 -------------- next part -------------- An HTML attachment was scrubbed... URL: From rick.denatale at gmail.com Wed Jun 14 14:44:28 2023 From: rick.denatale at gmail.com (Rick DeNatale) Date: Wed, 14 Jun 2023 15:44:28 -0400 Subject: [TriEmbed] Eagle going away as distinct software In-Reply-To: References: Message-ID: <8E1BEAEE-C777-4705-B76B-0D4CF5DC4957@gmail.com> As someone with limited experience with Eagle, and only the version ?integrated? with Fusion 360, I welcome this as I hope it means that electronics in Fusion will move away from being a ?bastard? child. ?? Rick DeNatale > On Jun 14, 2023, at 3:21 PM, Peter Soper via TriEmbed wrote: > > ? > Effective June 7, 2026, Autodesk will no longer sell nor support EAGLE - https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Autodesk-EAGLE-Announcement-Next-steps-and-FAQ.html > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ > From pete at soper.us Wed Jun 14 14:45:06 2023 From: pete at soper.us (Peter Soper) Date: Wed, 14 Jun 2023 15:45:06 -0400 (EDT) Subject: [TriEmbed] Hacker News discussion of Eagle news (with mountains of Kicad assertions) Message-ID: <13c6bf0a-c014-408c-9973-0b17c224e499@soper.us> https://news.ycombinator.com/item?id=36319137 -------------- next part -------------- An HTML attachment was scrubbed... URL: From paulmacdnc at att.net Thu Jun 15 09:02:12 2023 From: paulmacdnc at att.net (The MacDougals) Date: Thu, 15 Jun 2023 10:02:12 -0400 Subject: [TriEmbed] momentary toggle switch References: <00c401d99f91$fc1c7ce0$f45576a0$.ref@att.net> Message-ID: <00c401d99f91$fc1c7ce0$f45576a0$@att.net> I can't believe that Amazon does not have momentary mini toggle switches. Looking for: SPST OFF/(ON) or SPDT ON/(ON) Something like this: https://led-switch.com/products/m112-spdt-on-on-momentary-one-side-miniature -toggle-switch ---> Paul -------------- next part -------------- An HTML attachment was scrubbed... URL: From mrglenasmith at gmail.com Thu Jun 15 09:05:42 2023 From: mrglenasmith at gmail.com (Glen Smith) Date: Thu, 15 Jun 2023 10:05:42 -0400 Subject: [TriEmbed] momentary toggle switch In-Reply-To: <00c401d99f91$fc1c7ce0$f45576a0$@att.net> References: <00c401d99f91$fc1c7ce0$f45576a0$.ref@att.net> <00c401d99f91$fc1c7ce0$f45576a0$@att.net> Message-ID: Paul, Can you accept 3 position? https://www.amazon.com/gp/product/B07XMJ1PDF/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 On Thu, Jun 15, 2023 at 10:02?AM The MacDougals via TriEmbed < triembed at triembed.org> wrote: > I can?t believe that Amazon does not have momentary mini toggle switches. > > > > Looking for: > > SPST OFF/(ON) or SPDT ON/(ON) > > > > Something like this: > > > https://led-switch.com/products/m112-spdt-on-on-momentary-one-side-miniature-toggle-switch > > > > ---> Paul > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From trampas at gmail.com Thu Jun 15 09:43:35 2023 From: trampas at gmail.com (Trampas Stern) Date: Thu, 15 Jun 2023 10:43:35 -0400 Subject: [TriEmbed] momentary toggle switch In-Reply-To: References: <00c401d99f91$fc1c7ce0$f45576a0$.ref@att.net> <00c401d99f91$fc1c7ce0$f45576a0$@att.net> Message-ID: Mouser or Digikey are always an option: https://www.mouser.com/c/?q=SPST%20momentary%20toggle https://www.digikey.com/en/products/filter/toggle-switches/201 AllElectronics sells surplus items and often has better prices (not always): https://www.allelectronics.com/category/730/switches-toggle/1.html If you have time for long shipping, LCSC is an Asian based electronics component supplier. For example I ordered reels of 0402 resistors from them so I did not have to deal with cut tapes anymore. https://www.lcsc.com/ Finally if you want really cheap, but long lead/shipping times check out AliExpress: https://www.aliexpress.com/premium/momentary-toggle-switch-button.html?catId=0&initiative_id=SB_20230615064154&SearchText=momentary+toggle+switch+button&spm=a2g0o.productlist.1000002.0 Trampas On Thu, Jun 15, 2023 at 10:06?AM Glen Smith via TriEmbed < triembed at triembed.org> wrote: > Paul, > > Can you accept 3 position? > https://www.amazon.com/gp/product/B07XMJ1PDF/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 > > On Thu, Jun 15, 2023 at 10:02?AM The MacDougals via TriEmbed < > triembed at triembed.org> wrote: > >> I can?t believe that Amazon does not have momentary mini toggle switches. >> >> >> >> Looking for: >> >> SPST OFF/(ON) or SPDT ON/(ON) >> >> >> >> Something like this: >> >> >> https://led-switch.com/products/m112-spdt-on-on-momentary-one-side-miniature-toggle-switch >> >> >> >> ---> Paul >> >> >> _______________________________________________ >> Triangle, NC Embedded Interest Group mailing list >> >> To post message: TriEmbed at triembed.org >> List info: >> http://mail.triembed.org/mailman/listinfo/triembed_triembed.org >> TriEmbed web site: https://TriEmbed.org >> To unsubscribe, click link and send a blank message: mailto: >> unsubscribe-TriEmbed at bitser.net?subject=unsubscribe >> Searchable email archive available at >> https://www.mail-archive.com/triembed at triembed.org/ >> >> _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From triembed at undecidedgames.net Thu Jun 15 09:58:37 2023 From: triembed at undecidedgames.net (Brian) Date: Thu, 15 Jun 2023 10:58:37 -0400 Subject: [TriEmbed] momentary toggle switch In-Reply-To: <00c401d99f91$fc1c7ce0$f45576a0$@att.net> References: <00c401d99f91$fc1c7ce0$f45576a0$.ref@att.net> <00c401d99f91$fc1c7ce0$f45576a0$@att.net> Message-ID: On 6/15/23 10:02, The MacDougals via TriEmbed wrote: > I can?t believe that Amazon does not have ... Amazon search is intentionally built to show you stuff you aren't looking for, kinda like the impulse-buy shelves at checkout counters. Trying to find something specific ranges from headache-inducing to downright impossible. If you don't need the inexpensive fast shipping, I'd say Amazon should generally be your last choice for components. DigiKey routinely gets stuff to me via USPS in three days and they're my go-to for any non-emergency situation. Plus their customer service is top-notch. MPJA is another electronics surplus dealer that I like for cheap stuff. They take a bit longer to process and ship their orders but they're great for lucky finds. -B From jwet at mindspring.com Thu Jun 15 11:01:06 2023 From: jwet at mindspring.com (John Wettroth) Date: Thu, 15 Jun 2023 12:01:06 -0400 Subject: [TriEmbed] momentary toggle switch In-Reply-To: References: <00c401d99f91$fc1c7ce0$f45576a0$.ref@att.net> <00c401d99f91$fc1c7ce0$f45576a0$@att.net> Message-ID: <002601d99fa2$98562100$c9026300$@mindspring.com> +1 for Marlin P. Jones. Jameco is also good for inexpensive electromechanical stuff and old IC's in DIPs. They've stepped up their service game some, not Digi-Key but reasonable. I don't know why all these guys want to spam you though. Regards, John M. Wettroth E: jwet at mindspring.com M: (919) 349-9875 H: (984) 329-5420 -----Original Message----- From: TriEmbed On Behalf Of Brian via TriEmbed Sent: Thursday, June 15, 2023 10:59 AM To: triembed at triembed.org Subject: Re: [TriEmbed] momentary toggle switch On 6/15/23 10:02, The MacDougals via TriEmbed wrote: > I can?t believe that Amazon does not have ... Amazon search is intentionally built to show you stuff you aren't looking for, kinda like the impulse-buy shelves at checkout counters. Trying to find something specific ranges from headache-inducing to downright impossible. If you don't need the inexpensive fast shipping, I'd say Amazon should generally be your last choice for components. DigiKey routinely gets stuff to me via USPS in three days and they're my go-to for any non-emergency situation. Plus their customer service is top-notch. MPJA is another electronics surplus dealer that I like for cheap stuff. They take a bit longer to process and ship their orders but they're great for lucky finds. -B _______________________________________________ Triangle, NC Embedded Interest Group mailing list To post message: TriEmbed at triembed.org List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org TriEmbed web site: https://TriEmbed.org To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe Searchable email archive available at https://www.mail-archive.com/triembed at triembed.org/ From raubvogel at gmail.com Thu Jun 15 11:10:36 2023 From: raubvogel at gmail.com (Mauricio Tavares) Date: Thu, 15 Jun 2023 12:10:36 -0400 Subject: [TriEmbed] momentary toggle switch In-Reply-To: <00c401d99f91$fc1c7ce0$f45576a0$@att.net> References: <00c401d99f91$fc1c7ce0$f45576a0$.ref@att.net> <00c401d99f91$fc1c7ce0$f45576a0$@att.net> Message-ID: <0B726216-44D8-48ED-872E-FD6E03617070@gmail.com> On June 15, 2023 10:02:12 AM EDT, The MacDougals via TriEmbed wrote: >I can't believe that Amazon does not have momentary mini toggle switches. > > > >Looking for: > >SPST OFF/(ON) or SPDT ON/(ON) > > > >Something like this: > >https://led-switch.com/products/m112-spdt-on-on-momentary-one-side-miniature >-toggle-switch > Mcmaster.com, newark.com, or even surpluscenger.com perhaps? > >---> Paul > > > From shanedtrent at gmail.com Fri Jun 16 11:42:48 2023 From: shanedtrent at gmail.com (Shane Trent) Date: Fri, 16 Jun 2023 12:42:48 -0400 Subject: [TriEmbed] momentary toggle switch In-Reply-To: <0B726216-44D8-48ED-872E-FD6E03617070@gmail.com> References: <00c401d99f91$fc1c7ce0$f45576a0$.ref@att.net> <00c401d99f91$fc1c7ce0$f45576a0$@att.net> <0B726216-44D8-48ED-872E-FD6E03617070@gmail.com> Message-ID: Like this? https://www.amazon.com/Twidec-One-Side-Momentary-Waterproof-KL-B112MZ/dp/B0991ZNZXZ/ref=sr_1_3?crid=1A4Q7HRHA6W9D&keywords=SPST+momentary+%222+position%22&qid=1686933615&sprefix=spst+momentary+2+position+%2Caps%2C103&sr=8-3 On Thu, Jun 15, 2023 at 12:11?PM Mauricio Tavares via TriEmbed < triembed at triembed.org> wrote: > On June 15, 2023 10:02:12 AM EDT, The MacDougals via TriEmbed < > triembed at triembed.org> wrote: > >I can't believe that Amazon does not have momentary mini toggle switches. > > > > > > > >Looking for: > > > >SPST OFF/(ON) or SPDT ON/(ON) > > > > > > > >Something like this: > > > > > https://led-switch.com/products/m112-spdt-on-on-momentary-one-side-miniature > >-toggle-switch > > > Mcmaster.com, newark.com, or even surpluscenger.com perhaps? > > > >---> Paul > > > > > > > > > _______________________________________________ > Triangle, NC Embedded Interest Group mailing list > > To post message: TriEmbed at triembed.org > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: https://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > unsubscribe-TriEmbed at bitser.net?subject=unsubscribe > Searchable email archive available at > https://www.mail-archive.com/triembed at triembed.org/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From paulmacdnc at att.net Fri Jun 16 17:22:05 2023 From: paulmacdnc at att.net (The MacDougals) Date: Fri, 16 Jun 2023 18:22:05 -0400 Subject: [TriEmbed] momentary toggle switch In-Reply-To: References: <00c401d99f91$fc1c7ce0$f45576a0$.ref@att.net> <00c401d99f91$fc1c7ce0$f45576a0$@att.net> <0B726216-44D8-48ED-872E-FD6E03617070@gmail.com> Message-ID: <01a401d9a0a0$fbb3dae0$f31b90a0$@att.net> https://www.amazon.com/Twidec-One-Side-Momentary-Waterproof-KL-B112MZ/dp/B0991ZNZXZ Yes! but was looking for smaller (mini toggle). ---> Paul From: Shane Trent Sent: Friday, June 16, 2023 12:43 PM To: Mauricio Tavares ; paulmacd at acm.org Cc: triembed at triembed.org Subject: Re: [TriEmbed] momentary toggle switch Like this? https://www.amazon.com/Twidec-One-Side-Momentary-Waterproof-KL-B112MZ/dp/B0991ZNZXZ/ref=sr_1_3?crid=1A4Q7HRHA6W9D &keywords=SPST+momentary+%222+position%22&qid=1686933615&sprefix=spst+momentary+2+position+%2Caps%2C103&sr=8-3 On Thu, Jun 15, 2023 at 12:11?PM Mauricio Tavares via TriEmbed > wrote: On June 15, 2023 10:02:12 AM EDT, The MacDougals via TriEmbed > wrote: >I can't believe that Amazon does not have momentary mini toggle switches. > > > >Looking for: > >SPST OFF/(ON) or SPDT ON/(ON) > > > >Something like this: > >https://led-switch.com/products/m112-spdt-on-on-momentary-one-side-miniature >-toggle-switch > Mcmaster.com, newark.com , or even surpluscenger.com perhaps? > >---> Paul > > > _______________________________________________ Triangle, NC Embedded Interest Group mailing list To post message: TriEmbed at triembed.org List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org TriEmbed web site: https://TriEmbed.org To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net ?subject=unsubscribe Searchable email archive available at https://wwwmail-archive.com/triembed at triembed.org/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From carl.nobile at gmail.com Sat Jun 17 19:06:31 2023 From: carl.nobile at gmail.com (Carl Nobile) Date: Sat, 17 Jun 2023 20:06:31 -0400 Subject: [TriEmbed] The video from 2023-06-12 is publishing now. Message-ID: Hi all, The meeting video from last week (2023-06-12) is in the process of publishing as I write this. Here is the URL: https://youtu.be/k9puSiAPq_o ~Carl -------------------------------------------------------------- Carl J. Nobile (Software Engineer/API Design) carl.nobile at gmail.com -------------------------------------------------------------- -------------- next part -------------- An HTML attachment was scrubbed... URL: From ncgadgetry at gmail.com Fri Jun 30 22:35:17 2023 From: ncgadgetry at gmail.com (Rodney Radford) Date: Fri, 30 Jun 2023 23:35:17 -0400 Subject: [TriEmbed] Fwd: Don Lancaster has passed away In-Reply-To: References: Message-ID: ---------- Forwarded message --------- From: 'Roy Bragg' via S100Computers Date: Fri, Jun 30, 2023 at 5:29?PM Subject: Don Lancaster has passed away To: S100Computers Don Lancaster, a highly-revered figure in the microcomputer industry for the past six decades, peacefully passed away at age 83 on June 7, 2023, in Mesa, Arizona. Don?s contributions to the world of microcomputers were exceptional by any measure. Probably his most notable early achievement was the creation of the ?TV Typewriter,? a revolutionary device that utilized transistor-transistor logic (TTL) to display text on a TV screen. The TV Typewriter first appeared in the September 1973 issue of Radio Electronics. This creation became the basis and the title for one of his earliest published books. The prototype of this groundbreaking precursor to the modern computer keyboard is showcased at the Computer History Museum. Don also holds a patent for one of the original Apple parts he developed as well as having had a hand in the design and manufacture of the Apple I keyboard, he was widely recognized as a pioneer in the technology field. His dedication to the computing and electronics industry was evident in his extensive body of work. Don authored well over 2,200 technical papers and 44 books covering a wide-range of topics related to computers and electronics, firmly solidifying his reputation as an extremely knowledgeable and prolific writer. His insightful contributions could also be found in the pages of leading electronics magazines of the 1960s through to the 2000s. His first article appeared in the April 1963 issue of Electronics World. He also was the author behind the wildly popular Hardware Hacker series in Radio-Electronics Magazine from January 1988 until June 1995. As an instructor at Eastern Arizona College, Don embraced his role as a teacher and mentor, imparting his extensive expertise in electronic microprocessing to students. Don?s commitment to knowledge dissemination extended beyond traditional channels. As the owner and operator of Synergetics and Synergetic Publishing, Don and his wife produced educational videos and actively engaged with his audience as a blogger ? sharing his insights and fostering a sense of community. One of his notable accomplishments was the creation of his website, Guru?s Lair Resources ( www.tinaja.com), which served as a comprehensive repository of computer-related information. Visitors to the site could also access his seemingly endless personal research on the fascinating hanging canals of the Pinale?o Mountains, explore his extensive book collection, and discover details about numerous Gila Valley Day Hikes ? a topic close to his heart. Don received an Electrical Engineering degree at Lafayette College in Pennsylvania before earning a Master?s degree in Engineering from Arizona State University while working at Goodyear Aerospace Corp. Don?s intellectual curiosity even led him to nearly complete a second Master?s degree in Archaeology at ASU, highlighting his diverse interests. Don?s contributions to the Apple community extended beyond his technical accomplishments. Among his 44 books are the Apple II-centric Assembly Language Cookbook volumes, as well as AppleWriter-in-Depth, released in 1984 by A.P.P.L.E. These and other contributions over the years to the community will be forever cherished. Left to honor Don?s memory are his beloved wife and daughter, cherished grandchildren, and his sister and brother. Their loss is shared by the microcomputer industry and the community that esteemed Don for his extensive expertise, informative writings, unwavering passion, and dedication to the industry. -- You received this message because you are subscribed to the Google Groups "S100Computers" group. To unsubscribe from this group and stop receiving emails from it, send an email to s100computers+unsubscribe at googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/s100computers/b48394d4-3db0-400e-a675-73b6b44a39aan%40googlegroups.com . -------------- next part -------------- An HTML attachment was scrubbed... URL: