From paulmacdnc at att.net  Tue Dec  5 20:40:41 2023
From: paulmacdnc at att.net (The MacDougals)
Date: Tue, 5 Dec 2023 21:40:41 -0500
Subject: [TriEmbed] Monthly meeting 12/11/23
References: <043401da27ed$9b6b64d0$d2422e70$.ref@att.net>
Message-ID: <043401da27ed$9b6b64d0$d2422e70$@att.net>

We will have our normal monthly meeting on Monday 12/11/23 at 7:00 pm

 

Agenda:

- Welcome

- Announcements

- P.O.T.M.

- Something about CAN bus by Paul MacDougal

- Show and Tell

 

The plan for this month is to use https://meet.jit.si/TriEmbed

 

---> Paul

 

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From raubvogel at gmail.com  Thu Dec 14 21:37:07 2023
From: raubvogel at gmail.com (Mauricio Tavares)
Date: Thu, 14 Dec 2023 22:37:07 -0500
Subject: [TriEmbed] Conductivity pad thickness
Message-ID: <CAHEKYV6kU2uYOqwEMFvHzih2uHJCmHP8rJF9r8A2RQ0O2VVtAA@mail.gmail.com>

I need to replace the gpu card in my desktop and was going to take the
opportunity and try to use a conductivity pad instead of the goo. Last
time I used it was in heat sinks on my Rpi4, which were bits from what
I had used in my 3D printer. It worked I guess, but this time we are
talking about GPU and I would like not to half ass it.

So I was looking at https://kriticalpads.com/full-sheets and did not
realize they sold them by the thickness, with the thicker being
supposedly the most conductive. How do I figure out how thick I need?
Just the thickest one I can shove in place? I was also thinking about
the merit of using them in a laptop, where space is at a premium on a
good day.



From jwet at mindspring.com  Sun Dec 17 08:24:08 2023
From: jwet at mindspring.com (John Wettroth)
Date: Sun, 17 Dec 2023 09:24:08 -0500
Subject: [TriEmbed] Conductivity pad thickness
In-Reply-To: <CAHEKYV6kU2uYOqwEMFvHzih2uHJCmHP8rJF9r8A2RQ0O2VVtAA@mail.gmail.com>
References: <CAHEKYV6kU2uYOqwEMFvHzih2uHJCmHP8rJF9r8A2RQ0O2VVtAA@mail.gmail.com>
Message-ID: <000001da30f4$b358ddb0$1a0a9910$@mindspring.com>

This is confusing- you should use the "thinnest" pad that you can get away with.
Only enough to make up for any mechanical surface inconsistencies.  Thermal
Conductivity are the units they use -W/mK, the more common unit is Thermal
Resistance which is the inverse of conductivity (just like electronics).  You
can think of heat sink materials as a series of resistors that are taking the
junction temperature though a series of interfaces to ambient.  You want the
lowest resistance path to give you the lowest temp rise.  When you invert their
conductivity, you'll get Resistivity with units of mK/W, this is what you want
to minimize.  Thermal Resistance uses a theta symbol and is usually dimensioned
in W/deg C, though W/K would be more correct.

If things are pretty flat, .5mm should be fine, this is .02 inches.
I noticed they had some precut units for some common GPU's (3080, etc.) though
pricey?

A common error people make with thermal pastes of all types is to use too much.
"The bigger the blob, the better the job" philosophy of new solderers.  All you
want to do is fill the tiny gaps and get the two surfaces in intimate contact.
Nicely machined and polished surfaces would be the best- but no one but NASA has
the dough for that.
Good luck.

Regards,
John M. Wettroth
E: jwet at mindspring.com
M: (919) 349-9875 
H:  (984) 329-5420

-----Original Message-----
From: TriEmbed <triembed-bounces at triembed.org> On Behalf Of Mauricio Tavares via
TriEmbed
Sent: Thursday, December 14, 2023 10:37 PM
To: TriEmbed Discussion <triembed at triembed.org>
Subject: [TriEmbed] Conductivity pad thickness

I need to replace the gpu card in my desktop and was going to take the
opportunity and try to use a conductivity pad instead of the goo. Last
time I used it was in heat sinks on my Rpi4, which were bits from what
I had used in my 3D printer. It worked I guess, but this time we are
talking about GPU and I would like not to half ass it.

So I was looking at https://kriticalpads.com/full-sheets and did not
realize they sold them by the thickness, with the thicker being
supposedly the most conductive. How do I figure out how thick I need?
Just the thickest one I can shove in place? I was also thinking about
the merit of using them in a laptop, where space is at a premium on a
good day.

_______________________________________________
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  Tue Dec 19 17:11:56 2023
From: pete at soper.us (Peter Soper)
Date: Tue, 19 Dec 2023 18:11:56 -0500 (EST)
Subject: [TriEmbed] Early PC hisory
Message-ID: <547a453d-1603-43e0-a323-1621f84f92f3@soper.us>

Ed Roberts: The Secret Father of Modern Computing - https://every.to/p/the-secret-father-of-modern-computing

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From 1101010 at gmail.com  Wed Dec 27 10:44:03 2023
From: 1101010 at gmail.com (jonathan hunsberger)
Date: Wed, 27 Dec 2023 11:44:03 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
Message-ID: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>

Hi everyone,
I have a need for a custom board and don't really get excited about board
design as a skill to acquire. I previously tried KiCad and was a bit
overwhelmed. Are there any other options out there that are a little more
approachable for a one-off project? It is really simple, just connecting a
Teensy with two module boards, a USB-c socket, an RJ11, a POT, and a few
passives and I plan to hand-solder everything together.
Thanks!
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From trampas at gmail.com  Wed Dec 27 11:08:19 2023
From: trampas at gmail.com (Trampas Stern)
Date: Wed, 27 Dec 2023 12:08:19 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
References: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
Message-ID: <CADqjcygc6ifxm6ir+7SYEABofK=Paun3g7eT2kji5pXt9Vw65A@mail.gmail.com>

You can try https://easyeda.com/.   JLCPCB.com is a great place to get
boards, they will even populate the boards for you.

Trampas

On Wed, Dec 27, 2023 at 11:44?AM jonathan hunsberger via TriEmbed <
triembed at triembed.org> wrote:

> Hi everyone,
> I have a need for a custom board and don't really get excited about board
> design as a skill to acquire. I previously tried KiCad and was a bit
> overwhelmed. Are there any other options out there that are a little more
> approachable for a one-off project? It is really simple, just connecting a
> Teensy with two module boards, a USB-c socket, an RJ11, a POT, and a few
> passives and I plan to hand-solder everything together.
> Thanks!
>
> _______________________________________________
> 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/
>
>
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From kschilf at yahoo.com  Wed Dec 27 13:51:38 2023
From: kschilf at yahoo.com (Kevin Schilf)
Date: Wed, 27 Dec 2023 19:51:38 +0000 (UTC)
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
References: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
Message-ID: <1822280631.5806931.1703706698960@mail.yahoo.com>

 Hi Jonathan,
All EDA tools carry overhead to get started.? The first step is schematic and footprint libraries.? Then you have to learn to drive the tool to ultimately make gerber files that folks like OshPark can turn into boards.? The question is whether or not that overhead benefits you in terms of future volumes or required board complexity.
The simplest path is buying a pre-perforated circuit board then secure the components and connect with discrete wires.? The boards easily handle things on a 0.1" center.? You may need to drill additional holes for other components.? This becomes more difficult for smaller surface mount devices.

If you are making a single board, one layer (no internal planes no backside). check out toner transfer.? This is the way poor grad students used to/still make project boards.? You can do the artwork on any graphics program then transfer and etch.? You will have to manually drill the holes as applicable and won't have automatic hole plating or via options.? If you have circuitry on the front and back sides then you will have to watch registration before drilling to make sure your holes line up on both sides after you drill them.

There are also small purpose built CNC machines designed to grind off the unwanted copper from the sheet.? They are expensive unless you have access at work or a university?

Once you start adding internal layers, need tighter registration, or want more complex routing relationships you are better off going the EDA route.
Here is a hackaday article...

Take Your PCBs From Good To Great: Toner Transfer

| 
| 
| 
|  |  |

 |

 |
| 
|  | 
Take Your PCBs From Good To Great: Toner Transfer

A lot of us make circuit boards at home. I find it a useful skill to have in my bag of tricks for intermediate s...
 |

 |

 |




Good Luck,Kevin

    On Wednesday, December 27, 2023 at 11:44:40 AM EST, jonathan hunsberger via TriEmbed <triembed at triembed.org> wrote:  
 
 Hi everyone,?I have a need for a custom board and don't really get excited about board design as a skill to acquire. I previously tried KiCad and was a bit overwhelmed. Are there any other options out there that are a little more approachable for a one-off project? It is really simple, just connecting a Teensy with two module boards, a USB-c socket, an RJ11, a POT, and a few passives and I plan to hand-solder everything together.Thanks!
_______________________________________________
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/

  
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From 1101010 at gmail.com  Wed Dec 27 14:51:50 2023
From: 1101010 at gmail.com (jonathan hunsberger)
Date: Wed, 27 Dec 2023 15:51:50 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAJWx4Yiu3BiXLbp1j571deRR9X8p_9TrjcuSRwyZDXvFts-ckA@mail.gmail.com>
References: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
 <1822280631.5806931.1703706698960@mail.yahoo.com>
 <CAJWx4Yiu3BiXLbp1j571deRR9X8p_9TrjcuSRwyZDXvFts-ckA@mail.gmail.com>
Message-ID: <CAJWx4Yjo_qDz3g2p1e=+C=f7vosgTBdvTOACLX-Qp9cz+rFL=Q@mail.gmail.com>

(trying to make this fit in the triembed 250k limit...)
On Wed, Dec 27, 2023 at 3:45?PM jonathan hunsberger <1101010 at gmail.com>
wrote:

> Thanks for all the info. I'm playing around with EasyEDA at the moment and
> will see where i can get.  I did hack this together with pre-perforated
> circuit board in a lock-n-lock (see pic).  Now i'd like to make it more
> compact and repeatable and maybe make a 3d-printed shell for it.  This is
> for a project <https://github.com/jrhunger/dialamemory> where you can
> dial numbers on a rotary phone and play audio samples.  There is one in the
> Cocoa Cinnamon on Hillsborough Rd in Durham, but for that one i took the
> insides out and wired everything directly to the receiver/dial.  The newer
> version (pictured and which i'm trying to make a board for) uses a SLIC
> board so an unmodified phone can plug into it.  I'm sure i will get it
> wrong a few times before i get it right. :)
>


> [image: board-small.jpg]
>
>
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From paulmacdnc at att.net  Wed Dec 27 15:44:58 2023
From: paulmacdnc at att.net (The MacDougals)
Date: Wed, 27 Dec 2023 16:44:58 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAJWx4Yjo_qDz3g2p1e=+C=f7vosgTBdvTOACLX-Qp9cz+rFL=Q@mail.gmail.com>
References: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
 <1822280631.5806931.1703706698960@mail.yahoo.com>
 <CAJWx4Yiu3BiXLbp1j571deRR9X8p_9TrjcuSRwyZDXvFts-ckA@mail.gmail.com>
 <CAJWx4Yjo_qDz3g2p1e=+C=f7vosgTBdvTOACLX-Qp9cz+rFL=Q@mail.gmail.com>
Message-ID: <02a801da390d$f0fcfa40$d2f6eec0$@att.net>

I started with Eagle.  Quickly got frustrated and tried Fritzing, which did the job for the board I needed.  On seeing that OSHPark accepts Eagle board files, I went back to Eagle.

They now accept Eagle, KiCad, or gerbers.  I watched some YouTube tutorials on Eagle and that helped immensely.

 

I am still using a free version of Eagle, but it seems that they are wanting people to pay for even the basics.

 

If you have not learned a CAD program yet, I would recommend KiCad (I have never used it) because it is open source and supported.

 

If you want help with Eagle, I would be happy to work with you.

 

---> Paul

 

 

 

From: TriEmbed <triembed-bounces at triembed.org> On Behalf Of jonathan hunsberger via TriEmbed
Sent: Wednesday, December 27, 2023 3:52 PM
To: Triangle Embedded Devices <TriEmbed at triembed.org>
Subject: Re: [TriEmbed] Lowest learning curve to design a board?

 

(trying to make this fit in the triembed 250k limit..)

On Wed, Dec 27, 2023 at 3:45?PM jonathan hunsberger <1101010 at gmail.com <mailto:1101010 at gmail.com> > wrote:

Thanks for all the info. I'm playing around with EasyEDA at the moment and will see where i can get.  I did hack this together with pre-perforated circuit board in a lock-n-lock (see pic).  Now i'd like to make it more compact and repeatable and maybe make a 3d-printed shell for it.  This is for a project <https://github.com/jrhunger/dialamemory>  where you can dial numbers on a rotary phone and play audio samples.  There is one in the Cocoa Cinnamon on Hillsborough Rd in Durham, but for that one i took the insides out and wired everything directly to the receiver/dial.  The newer version (pictured and which i'm trying to make a board for) uses a SLIC board so an unmodified phone can plug into it.  I'm sure i will get it wrong a few times before i get it right. :)

 



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From rob at mackies.org  Wed Dec 27 15:54:16 2023
From: rob at mackies.org (Robert Mackie)
Date: Wed, 27 Dec 2023 16:54:16 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <02a801da390d$f0fcfa40$d2f6eec0$@att.net>
References: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
 <1822280631.5806931.1703706698960@mail.yahoo.com>
 <CAJWx4Yiu3BiXLbp1j571deRR9X8p_9TrjcuSRwyZDXvFts-ckA@mail.gmail.com>
 <CAJWx4Yjo_qDz3g2p1e=+C=f7vosgTBdvTOACLX-Qp9cz+rFL=Q@mail.gmail.com>
 <02a801da390d$f0fcfa40$d2f6eec0$@att.net>
Message-ID: <CAAQbUTJdEiu1Rny=FM5J+RZvVhzfrDDvJK6aigfnvD33HDrWCw@mail.gmail.com>

I strongly support what Paul said in recommending Fritzing. I was
completely snowed under by everything else I tried the first couple of
times. Once I had designed a couple of boards and obtained them using
Fritzing, i went back to kicad and was able to make sense of it. I use
kicad now, but I never would have gotten there without Fritzing.

Rob.

On Wed, Dec 27, 2023 at 4:45?PM The MacDougals via TriEmbed <
triembed at triembed.org> wrote:

> I started with Eagle.  Quickly got frustrated and tried Fritzing, which
> did the job for the board I needed.  On seeing that OSHPark accepts Eagle
> board files, I went back to Eagle.
>
> They now accept Eagle, KiCad, or gerbers.  I watched some YouTube
> tutorials on Eagle and that helped immensely.
>
>
>
> I am still using a free version of Eagle, but it seems that they are
> wanting people to pay for even the basics.
>
>
>
> If you have not learned a CAD program yet, I would recommend KiCad (I have
> never used it) because it is open source and supported.
>
>
>
> If you want help with Eagle, I would be happy to work with you.
>
>
>
> ---> Paul
>
>
>
>
>
>
>
> *From:* TriEmbed <triembed-bounces at triembed.org> *On Behalf Of *jonathan
> hunsberger via TriEmbed
> *Sent:* Wednesday, December 27, 2023 3:52 PM
> *To:* Triangle Embedded Devices <TriEmbed at triembed.org>
> *Subject:* Re: [TriEmbed] Lowest learning curve to design a board?
>
>
>
> (trying to make this fit in the triembed 250k limit..)
>
> On Wed, Dec 27, 2023 at 3:45?PM jonathan hunsberger <1101010 at gmail.com>
> wrote:
>
> Thanks for all the info. I'm playing around with EasyEDA at the moment and
> will see where i can get.  I did hack this together with pre-perforated
> circuit board in a lock-n-lock (see pic).  Now i'd like to make it more
> compact and repeatable and maybe make a 3d-printed shell for it.  This is
> for a project <https://github.com/jrhunger/dialamemory> where you can
> dial numbers on a rotary phone and play audio samples.  There is one in the
> Cocoa Cinnamon on Hillsborough Rd in Durham, but for that one i took the
> insides out and wired everything directly to the receiver/dial.  The newer
> version (pictured and which i'm trying to make a board for) uses a SLIC
> board so an unmodified phone can plug into it.  I'm sure i will get it
> wrong a few times before i get it right. :)
>
>
>
> _______________________________________________
> 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/
>
>
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From 1101010 at gmail.com  Wed Dec 27 16:05:46 2023
From: 1101010 at gmail.com (jonathan hunsberger)
Date: Wed, 27 Dec 2023 17:05:46 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAAQbUTJdEiu1Rny=FM5J+RZvVhzfrDDvJK6aigfnvD33HDrWCw@mail.gmail.com>
References: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
 <1822280631.5806931.1703706698960@mail.yahoo.com>
 <CAJWx4Yiu3BiXLbp1j571deRR9X8p_9TrjcuSRwyZDXvFts-ckA@mail.gmail.com>
 <CAJWx4Yjo_qDz3g2p1e=+C=f7vosgTBdvTOACLX-Qp9cz+rFL=Q@mail.gmail.com>
 <02a801da390d$f0fcfa40$d2f6eec0$@att.net>
 <CAAQbUTJdEiu1Rny=FM5J+RZvVhzfrDDvJK6aigfnvD33HDrWCw@mail.gmail.com>
Message-ID: <CAJWx4Yg3t5V+C5DCiuux08NT3epdqCTfkf8fyC9_4P1GB7JMXg@mail.gmail.com>

I'll look into it. Thank! I've only seen Fritzing used for protoboard
circuits, so I didn't think of that.

On Wed, Dec 27, 2023, 16:54 Robert Mackie via TriEmbed <
triembed at triembed.org> wrote:

> I strongly support what Paul said in recommending Fritzing. I was
> completely snowed under by everything else I tried the first couple of
> times. Once I had designed a couple of boards and obtained them using
> Fritzing, i went back to kicad and was able to make sense of it. I use
> kicad now, but I never would have gotten there without Fritzing.
>
> Rob.
>
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From datrembath at gmail.com  Wed Dec 27 16:10:43 2023
From: datrembath at gmail.com (Dawn Trembath)
Date: Wed, 27 Dec 2023 17:10:43 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAAQbUTJdEiu1Rny=FM5J+RZvVhzfrDDvJK6aigfnvD33HDrWCw@mail.gmail.com>
References: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
 <1822280631.5806931.1703706698960@mail.yahoo.com>
 <CAJWx4Yiu3BiXLbp1j571deRR9X8p_9TrjcuSRwyZDXvFts-ckA@mail.gmail.com>
 <CAJWx4Yjo_qDz3g2p1e=+C=f7vosgTBdvTOACLX-Qp9cz+rFL=Q@mail.gmail.com>
 <02a801da390d$f0fcfa40$d2f6eec0$@att.net>
 <CAAQbUTJdEiu1Rny=FM5J+RZvVhzfrDDvJK6aigfnvD33HDrWCw@mail.gmail.com>
Message-ID: <CAEkAHxdBLBDQQmFvg4tcfEdr1EqsyjqfufztY+Ob0Bj2SFgR6A@mail.gmail.com>

Ditto what Rob said.

On Wed, Dec 27, 2023 at 4:54?PM Robert Mackie via TriEmbed <
triembed at triembed.org> wrote:

> I strongly support what Paul said in recommending Fritzing. I was
> completely snowed under by everything else I tried the first couple of
> times. Once I had designed a couple of boards and obtained them using
> Fritzing, i went back to kicad and was able to make sense of it. I use
> kicad now, but I never would have gotten there without Fritzing.
>
> Rob.
>
> On Wed, Dec 27, 2023 at 4:45?PM The MacDougals via TriEmbed <
> triembed at triembed.org> wrote:
>
>> I started with Eagle.  Quickly got frustrated and tried Fritzing, which
>> did the job for the board I needed.  On seeing that OSHPark accepts Eagle
>> board files, I went back to Eagle.
>>
>> They now accept Eagle, KiCad, or gerbers.  I watched some YouTube
>> tutorials on Eagle and that helped immensely.
>>
>>
>>
>> I am still using a free version of Eagle, but it seems that they are
>> wanting people to pay for even the basics.
>>
>>
>>
>> If you have not learned a CAD program yet, I would recommend KiCad (I
>> have never used it) because it is open source and supported.
>>
>>
>>
>> If you want help with Eagle, I would be happy to work with you.
>>
>>
>>
>> ---> Paul
>>
>>
>>
>>
>>
>>
>>
>> *From:* TriEmbed <triembed-bounces at triembed.org> *On Behalf Of *jonathan
>> hunsberger via TriEmbed
>> *Sent:* Wednesday, December 27, 2023 3:52 PM
>> *To:* Triangle Embedded Devices <TriEmbed at triembed.org>
>> *Subject:* Re: [TriEmbed] Lowest learning curve to design a board?
>>
>>
>>
>> (trying to make this fit in the triembed 250k limit..)
>>
>> On Wed, Dec 27, 2023 at 3:45?PM jonathan hunsberger <1101010 at gmail.com>
>> wrote:
>>
>> Thanks for all the info. I'm playing around with EasyEDA at the moment
>> and will see where i can get.  I did hack this together with pre-perforated
>> circuit board in a lock-n-lock (see pic).  Now i'd like to make it more
>> compact and repeatable and maybe make a 3d-printed shell for it.  This is
>> for a project <https://github.com/jrhunger/dialamemory> where you can
>> dial numbers on a rotary phone and play audio samples.  There is one in the
>> Cocoa Cinnamon on Hillsborough Rd in Durham, but for that one i took the
>> insides out and wired everything directly to the receiver/dial.  The newer
>> version (pictured and which i'm trying to make a board for) uses a SLIC
>> board so an unmodified phone can plug into it.  I'm sure i will get it
>> wrong a few times before i get it right. :)
>>
>>
>>
>> _______________________________________________
>> 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/
>
>
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From dwight.w.morgan at gmail.com  Wed Dec 27 17:59:35 2023
From: dwight.w.morgan at gmail.com (Dwight Morgan)
Date: Wed, 27 Dec 2023 18:59:35 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAEkAHxdBLBDQQmFvg4tcfEdr1EqsyjqfufztY+Ob0Bj2SFgR6A@mail.gmail.com>
References: <CAEkAHxdBLBDQQmFvg4tcfEdr1EqsyjqfufztY+Ob0Bj2SFgR6A@mail.gmail.com>
Message-ID: <6F7F9365-F1F5-4402-8180-97241CDA0CB6@gmail.com>

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From nickedgington at gmail.com  Thu Dec 28 20:45:42 2023
From: nickedgington at gmail.com (Nick Edgington)
Date: Thu, 28 Dec 2023 21:45:42 -0500
Subject: [TriEmbed] A classic Jim William app (note the cookie tin)
Message-ID: <CAO7e_ZoUxiin8PdMDZ-2dSSFbf+iZcuPJ4=A5nPGchb3hOkK5w@mail.gmail.com>

https://www.analog.com/media/en/technical-documentation/application-notes/an83f.pdf
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From mcckevin at mcclaning.com  Thu Dec 28 21:33:44 2023
From: mcckevin at mcclaning.com (Kevin McClaning)
Date: Thu, 28 Dec 2023 22:33:44 -0500
Subject: [TriEmbed] A classic Jim William app (note the cookie tin)
In-Reply-To: <CAO7e_ZoUxiin8PdMDZ-2dSSFbf+iZcuPJ4=A5nPGchb3hOkK5w@mail.gmail.com>
References: <CAO7e_ZoUxiin8PdMDZ-2dSSFbf+iZcuPJ4=A5nPGchb3hOkK5w@mail.gmail.com>
Message-ID: <4b2d3e85-e7a5-4396-9bf1-9f13911caba6@mcclaning.com>

"Silence of the Amps"! What a hoot!


On 12/28/23 21:45, Nick Edgington via TriEmbed wrote:
> https://www.analog.com/media/en/technical-documentation/application-notes/an83f.pdf
>
> _______________________________________________
> 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/
>
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From 1101010 at gmail.com  Fri Dec 29 10:40:57 2023
From: 1101010 at gmail.com (jonathan hunsberger)
Date: Fri, 29 Dec 2023 11:40:57 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
References: <CAJWx4Yhj0MnmO-PQHZ=w21aZKmrUrWTPi72TfVNMEphKOiTniQ@mail.gmail.com>
Message-ID: <CAJWx4Yh=qa0JckL09a+HT_jnp+jWqRYW3PK6eeH-3Uxpxgg1Sg@mail.gmail.com>

For anyone interested, i hacked something together with EasyEDA that is at
least orderable :)  Maybe with what i learned there i will try the same
thing in KiCAD.
I need to add a few things like a thumbwheel pot, and Trampas said to be
more robust it would need more ESD protection capacitors, although i assume
the connected boards have their own.
(project page <https://oshwlab.com/1101010/dial-a-memory>) (editor link
<https://easyeda.com/editor#project_id=a0fdd1ab2910489d9e08face61b8356d>)

If anyone wants to tell me how wrong i've done it, i'd be open to hearing
that. :)

Does anyone know if i'm supposed to update the design drawings on the
project page manually?  Right now they show as blank, but captioned with
the names of the sheets in the project so it's confusing.

On Wed, Dec 27, 2023 at 11:44?AM jonathan hunsberger <1101010 at gmail.com>
wrote:

> Hi everyone,
> I have a need for a custom board and don't really get excited about board
> design as a skill to acquire. I previously tried KiCad and was a bit
> overwhelmed. Are there any other options out there that are a little more
> approachable for a one-off project? It is really simple, just connecting a
> Teensy with two module boards, a USB-c socket, an RJ11, a POT, and a few
> passives and I plan to hand-solder everything together.
> Thanks!
>
>
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From scottghall1 at gmail.com  Wed Dec 27 19:28:03 2023
From: scottghall1 at gmail.com (Scott Hall)
Date: Wed, 27 Dec 2023 20:28:03 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <6F7F9365-F1F5-4402-8180-97241CDA0CB6@gmail.com>
References: <CAEkAHxdBLBDQQmFvg4tcfEdr1EqsyjqfufztY+Ob0Bj2SFgR6A@mail.gmail.com>
 <6F7F9365-F1F5-4402-8180-97241CDA0CB6@gmail.com>
Message-ID: <CALOtY4Pu5-e1Wmo3FkuResXDBb8ZG9mwaBuauxuCorH_D4k7rQ@mail.gmail.com>

>
> *From:* TriEmbed <triembed-bounces at triembed.org> *On Behalf Of *jonathan
>>> hunsberger via TriEmbed
>>> *Sent:* Wednesday, December 27, 2023 3:52 PM
>>> *To:* Triangle Embedded Devices <TriEmbed at triembed.org>
>>> *Subject:* Re: [TriEmbed] Lowest learning curve to design a board?
>>>
>>>
>>>
>>> (trying to make this fit in the triembed 250k limit..)
>>>
>>> On Wed, Dec 27, 2023 at 3:45?PM jonathan hunsberger <1101010 at gmail.com>
>>> wrote:
>>>
>>> Thanks for all the info. I'm playing around with EasyEDA at the moment
>>> and will see where i can get.  I did hack this together with pre-perforated
>>> circuit board in a lock-n-lock (see pic).  Now i'd like to make it more
>>> compact and repeatable and maybe make a 3d-printed shell for it.  This is
>>> for a project <https://github.com/jrhunger/dialamemory> where you can
>>> dial numbers on a rotary phone and play audio samples.  There is one in the
>>> Cocoa Cinnamon on Hillsborough Rd in Durham, but for that one i took the
>>> insides out and wired everything directly to the receiver/dial.  The newer
>>> version (pictured and which i'm trying to make a board for) uses a SLIC
>>> board so an unmodified phone can plug into it.  I'm sure i will get it
>>> wrong a few times before i get it right. :)
>>>
>>> Funny thing this .... Elektor Magazine in their July/August issue had an
article "Rotary Dial Phone Remote Control", and they have also had a
sequenced-switch MP3 output device that used an old toy piano keyboard to
play audio fragments.

Anyway, I too am a CAD type of person, KiCAD being my first choice to
create files.  Previously I used Eagle and Fusion360.  Here is an article
that gives a rundown of free CAD software:
https://www.electroschematics.com/pcb-design-software/, and another
article: https://www.3dsourced.com/3d-software/best-pcb-design-software/

In the picture you provided I saw a breadboard, not a perfboard (see
picture).
[image: image.png]
Other prototyping products include veroboards (aka stripboards, see second
picture).
[image: image.png]

Then there are prototyping boards that have the same layout as a breadboard
(see 3rd & 4th pictures).
[image: image.png][image: image.png]

Here is links to a couple of articles on using prototyping boards:
from MKTPCB (who makes circuit boards): https://www.mktpcb.com/perfboard/
from DigiKey:
https://www.digikey.com/en/maker/blogs/2022/start-building-cleaner-perfboard-projects-using-these-simple-tips


-- 
Scott G. Hall
Raleigh, NC, USA
scottghall1 at gmail.com
*Although kindness is rarely a job, no matter what you do it's always an
option.*
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From 1101010 at gmail.com  Fri Dec 29 19:03:46 2023
From: 1101010 at gmail.com (jonathan hunsberger)
Date: Fri, 29 Dec 2023 20:03:46 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CALOtY4Pu5-e1Wmo3FkuResXDBb8ZG9mwaBuauxuCorH_D4k7rQ@mail.gmail.com>
References: <CAEkAHxdBLBDQQmFvg4tcfEdr1EqsyjqfufztY+Ob0Bj2SFgR6A@mail.gmail.com>
 <6F7F9365-F1F5-4402-8180-97241CDA0CB6@gmail.com>
 <CALOtY4Pu5-e1Wmo3FkuResXDBb8ZG9mwaBuauxuCorH_D4k7rQ@mail.gmail.com>
Message-ID: <CAJWx4YiP5cseZ5jYJgVeN=jA+z65bp_t-j-wr9eaujDvKbh00A@mail.gmail.com>

Ah, I used the wrong word maybe. It was a board with holes, but laid out
like a breadboard (like your 2nd set of examples but colored like a
breadboard too), and the pieces were soldered into it. However that format
constrained the layout too much. The true perfboard you pictured first
would work better and I think I will buy some of that to have on hand for
hands-on thinking about arrangements.

My friend sent me that Elektor article, although I think I could only see
the intro since I don't subscribe. I have seen several other similar
projects over the years, including one very similar on hackaday.io. I
haven't seen one that used a SLIC board to avoid modding the phone but I'm
sure someone has - I'm not claiming to have invented something new here.
Just made one for myself and then had several other people want one.

Contrary to what I initially said, I *am* interested in learning about
board design. I just didn't want to spend a lot of upfront time learning
theory or KiCAD before I could start working on the thing I care about.
Learning along the way is more my speed.

I appreciate all the info everyone has provided!

On Fri, Dec 29, 2023, 18:16 Scott Hall via TriEmbed <triembed at triembed.org>
wrote:
....

> Funny thing this .... Elektor Magazine in their July/August issue had an
> article "Rotary Dial Phone Remote Control", and they have also had a
> sequenced-switch MP3 output device that used an old toy piano keyboard to
> play audio fragments.
>
> Anyway, I too am a CAD type of person, KiCAD being my first choice to
> create files.  Previously I used Eagle and Fusion360.  Here is an article
> that gives a rundown of free CAD software:
> https://www.electroschematics.com/pcb-design-software/, and another
> article: https://www.3dsourced.com/3d-software/best-pcb-design-software/
>
> In the picture you provided I saw a breadboard, not a perfboard (see
> picture).
> [image: image.png]
> Other prototyping products include veroboards (aka stripboards, see second
> picture).
> [image: image.png]
>
> Then there are prototyping boards that have the same layout as a
> breadboard (see 3rd & 4th pictures).
> [image: image.png][image: image.png]
>
> Here is links to a couple of articles on using prototyping boards:
> from MKTPCB (who makes circuit boards): https://www.mktpcb.com/perfboard/
> from DigiKey:
> https://www.digikey.com/en/maker/blogs/2022/start-building-cleaner-perfboard-projects-using-these-simple-tips
>
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From carl.nobile at gmail.com  Fri Dec 29 18:46:49 2023
From: carl.nobile at gmail.com (Carl Nobile)
Date: Fri, 29 Dec 2023 19:46:49 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CALOtY4Pu5-e1Wmo3FkuResXDBb8ZG9mwaBuauxuCorH_D4k7rQ@mail.gmail.com>
References: <CAEkAHxdBLBDQQmFvg4tcfEdr1EqsyjqfufztY+Ob0Bj2SFgR6A@mail.gmail.com>
 <6F7F9365-F1F5-4402-8180-97241CDA0CB6@gmail.com>
 <CALOtY4Pu5-e1Wmo3FkuResXDBb8ZG9mwaBuauxuCorH_D4k7rQ@mail.gmail.com>
Message-ID: <CAGQqDQ+f9Y-r4y-V3+yZp0WmkG2NvMmtnwLoj-0d4utdeb1_UA@mail.gmail.com>

To follow what Scott said, I always make the first circuit on a prototyping
board if possible, then make a manufactured board. Never trust your first
design, I've been bitten a few times.

~Carl


On Fri, Dec 29, 2023 at 6:17?PM Scott Hall via TriEmbed <
triembed at triembed.org> wrote:

> *From:* TriEmbed <triembed-bounces at triembed.org> *On Behalf Of *jonathan
>>>> hunsberger via TriEmbed
>>>> *Sent:* Wednesday, December 27, 2023 3:52 PM
>>>> *To:* Triangle Embedded Devices <TriEmbed at triembed.org>
>>>> *Subject:* Re: [TriEmbed] Lowest learning curve to design a board?
>>>>
>>>>
>>>>
>>>> (trying to make this fit in the triembed 250k limit..)
>>>>
>>>> On Wed, Dec 27, 2023 at 3:45?PM jonathan hunsberger <1101010 at gmail.com>
>>>> wrote:
>>>>
>>>> Thanks for all the info. I'm playing around with EasyEDA at the moment
>>>> and will see where i can get.  I did hack this together with pre-perforated
>>>> circuit board in a lock-n-lock (see pic).  Now i'd like to make it more
>>>> compact and repeatable and maybe make a 3d-printed shell for it.  This is
>>>> for a project <https://github.com/jrhunger/dialamemory> where you can
>>>> dial numbers on a rotary phone and play audio samples.  There is one in the
>>>> Cocoa Cinnamon on Hillsborough Rd in Durham, but for that one i took the
>>>> insides out and wired everything directly to the receiver/dial.  The newer
>>>> version (pictured and which i'm trying to make a board for) uses a SLIC
>>>> board so an unmodified phone can plug into it.  I'm sure i will get it
>>>> wrong a few times before i get it right. :)
>>>>
>>>> Funny thing this .... Elektor Magazine in their July/August issue had
> an article "Rotary Dial Phone Remote Control", and they have also had a
> sequenced-switch MP3 output device that used an old toy piano keyboard to
> play audio fragments.
>
> Anyway, I too am a CAD type of person, KiCAD being my first choice to
> create files.  Previously I used Eagle and Fusion360.  Here is an article
> that gives a rundown of free CAD software:
> https://www.electroschematics.com/pcb-design-software/, and another
> article: https://www.3dsourced.com/3d-software/best-pcb-design-software/
>
> In the picture you provided I saw a breadboard, not a perfboard (see
> picture).
> [image: image.png]
> Other prototyping products include veroboards (aka stripboards, see second
> picture).
> [image: image.png]
>
> Then there are prototyping boards that have the same layout as a
> breadboard (see 3rd & 4th pictures).
> [image: image.png][image: image.png]
>
> Here is links to a couple of articles on using prototyping boards:
> from MKTPCB (who makes circuit boards): https://www.mktpcb.com/perfboard/
> from DigiKey:
> https://www.digikey.com/en/maker/blogs/2022/start-building-cleaner-perfboard-projects-using-these-simple-tips
>
>
> --
> Scott G. Hall
> Raleigh, NC, USA
> scottghall1 at gmail.com
> *Although kindness is rarely a job, no matter what you do it's always an
> option.*
> _______________________________________________
> 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/
>
>

-- 
--------------------------------------------------------------
Carl J. Nobile (Software Engineer/API Design)
carl.nobile at gmail.com
--------------------------------------------------------------
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From scottghall1 at gmail.com  Fri Dec 29 23:40:02 2023
From: scottghall1 at gmail.com (Scott Hall)
Date: Sat, 30 Dec 2023 00:40:02 -0500
Subject: [TriEmbed] Lowest learning curve to design a board?
In-Reply-To: <CAJWx4YiP5cseZ5jYJgVeN=jA+z65bp_t-j-wr9eaujDvKbh00A@mail.gmail.com>
References: <CAEkAHxdBLBDQQmFvg4tcfEdr1EqsyjqfufztY+Ob0Bj2SFgR6A@mail.gmail.com>
 <6F7F9365-F1F5-4402-8180-97241CDA0CB6@gmail.com>
 <CALOtY4Pu5-e1Wmo3FkuResXDBb8ZG9mwaBuauxuCorH_D4k7rQ@mail.gmail.com>
 <CAJWx4YiP5cseZ5jYJgVeN=jA+z65bp_t-j-wr9eaujDvKbh00A@mail.gmail.com>
Message-ID: <CALOtY4MByr1om4T4sZ4-PuuHsu5m5ti_Yt-mE-L4sOwj3ceYXA@mail.gmail.com>

Jon,
Here is a link to an inexpensive bundle of perfboards for many projects:
*10 PCS 73mm x 100mm PCB Board Prototype Kit Protoboard Copper Strip Board
Circuit Board Breadboards 957 Holes Perfboard Universal Printed Circuit
Breadboard for DIY Soldering Electronic Projects* ($8)
https://www.amazon.com/Prototype-Perfboard-Breadboard-Electronic-Experiments/dp/B09BCT2T8W/
[image: image.png]

The problem I have found with these perfboards over the years is the need
to cut them to size per project.
Here is a bundle of multiple sizes I've ordered before to give me a
selection for different projects - includes edge-card tabs:
*ELEGOO 32 Pcs Double Sided PCB Board Prototype Kit for DIY Soldering with
5 Sizes Compatible with Arduino Kits* ($10)
https://www.amazon.com/ELEGOO-Prototype-Soldering-Compatible-Arduino/dp/B072Z7Y19F/
[image: image.png]

The following link has most of the same sizes of perfboards, but includes
screw terminals, male & female headers, and jumpers for only $2 more:
*Tnisesm Double Sided PCB Board Kits,with 40 Pin 2.54mm Male and Female
Header Connector, 2P&3P Screw Terminal Block Prototype Boards for DIY
Solderin*
https://www.amazon.com/Tnisesm-Connector-Terminal-Prototype-Soldering/dp/B0BWDZK4KZ/
[image: image.png]

You may also wish to acquire some card-edge connectors, both solder and
ribbon cable, to make plug-in circuits.
[image: image.png]

On Fri, Dec 29, 2023 at 8:04?PM jonathan hunsberger via TriEmbed <
triembed at triembed.org> wrote:

> Ah, I used the wrong word maybe. It was a board with holes, but laid out
> like a breadboard (like your 2nd set of examples but colored like a
> breadboard too), and the pieces were soldered into it. However that format
> constrained the layout too much. The true perfboard you pictured first
> would work better and I think I will buy some of that to have on hand for
> hands-on thinking about arrangements.
>
> ...
>
> On Fri, Dec 29, 2023, 18:16 Scott Hall via TriEmbed <triembed at triembed.org>
> wrote:
> ....
>
>> Here is links to a couple of articles on using prototyping boards:
>> from MKTPCB (who makes circuit boards): https://www.mktpcb.com/perfboard/
>> from DigiKey:
>> https://www.digikey.com/en/maker/blogs/2022/start-building-cleaner-perfboard-projects-using-these-simple-tips
>>
>
-- 
Scott G. Hall
Raleigh, NC, USA
scottghall1 at gmail.com
*Although kindness is rarely a job, no matter what you do it's always an
option.*
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