From pete at soper.us Mon Jul 1 15:03:55 2024 From: pete at soper.us (Pete soper) Date: Mon, 1 Jul 2024 16:03:55 -0400 Subject: [TriEmbed] Reminder & Discord link Re: Join us July 1st to learn about a new Scanning tunneling microscope project In-Reply-To: References: Message-ID: The meeting is 7pm via a zoom-like thing in your browser here: https://meet.jit.si/TriEmbed The Discord server mentioned earlier can be joined here: https://discord.gg/7NUxwzKc (Discord is not being used directly for the meeting) On 6/27/24 20:49, Pete Soper wrote: > > Folks, > > ?? Nick Edgington started a project with the Forge Initiative to build > an affordable scanning tunneling microscope ("STM") capable of > visualizing individual atoms. He,? Jaime Johnsen, and I have been > gathering up information and doing a few initial things to test the > waters with input from Rob Mackey of the Forge and others.? Now we'd > like to start organizing the project and connecting with folks > interested in becoming involved. > > ?? An STM is a primarily electronic device that senses quantum > tunneling current flows between individual atoms while an electrically > charged, atomically sharp probe moves at very close range across the > surface to be scanned. Commercial STMs such as at universities are > very expensive. Our goal is to make something that can be reproduced > for a few hundred dollars. Ultimately we want a kit suitable for > school children. More details of STM operation here: > https://my.eng.utah.edu/~lzang/images/Lecture_6_STM.pdf > > ? Here are some key features of the project: > > * Extremely efficient resistance to vibration. Because the probe > must move less? than a nanometer from the surface to be scanned, > very efficient dampening must be used. Also the dampening must be > portable and use inexpensive materials. > * A means of moving the probe very precisely. Piezo crystals and > precise applied voltages are the common method for hobby STMs. > * A means of creating atomically sharp probe wires (the tip must be > a single atom!). This typically involves electrochemical etching > with gizmos to manage the process in a very repeatable manner. > Alternatively, a probe tip can be made in a much simpler way with > manual techniques for cutting the probe wire. > * A very stable package for the probe that contains the piezo probe > actuator and the probe current front end electronics. One of the > best projects we've found uses what appears to be a CNC-machined > block of aluminum that is a thing of beauty just asking to be used > for inspiration. > * High performance but inexpensive electronics to sense probe > current (*peak* current is a nanoampere or two) and digitize it, > arrange bias voltages between tip and target to enable quantum > tunneling, and move the probe on three axes. The power supplies > have to be excellent. Custom PC boards are a given. > * Software to control the system, gather data and translate it into > visualization and provide a user interface. A large body of code > for the Espressif ESP32 (project Edger) can be leveraged for a > very low cost system. The software will probably be a mixture of > Python, C, and Javascript. > * Making test systems that help detect things going right and wrong. > * Many supporting tasks to do with documentation, safety, > communication, coordination, sponsorship, etc. > > *An informal meeting will be held this Monday July 1st at 7pm *with > Jitsi using the usual TriEmbed URL : https://meet.jit.si/TriEmbed . > > *A more formal meeting will be held in mid August* in a room provided > by the town of Apex (the Forge is based in Apex). > > ? The various subsystems of an STM really push the envelope for > performance, and this project will be quite challenging, even though > there are many shoulders to stand on. > > ? A Discord channel on the Edger project is accumulating records while > we finish setting up a GitHub repository and supporting web resources. > I'll send directions on how to hook up with it later. > > Pete > -------------- next part -------------- An HTML attachment was scrubbed... URL: From paulmacdnc at att.net Thu Jul 4 16:31:41 2024 From: paulmacdnc at att.net (The MacDougals) Date: Thu, 4 Jul 2024 17:31:41 -0400 Subject: [TriEmbed] Monthly meeting 7/8 at 7:00pm via Jitsi References: <080901dace59$8ffc51a0$aff4f4e0$.ref@att.net> Message-ID: <080901dace59$8ffc51a0$aff4f4e0$@att.net> We will have our normal monthly meeting on Monday 7/8/24 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 scottghall1 at gmail.com Wed Jul 10 11:05:35 2024 From: scottghall1 at gmail.com (Scott Hall) Date: Wed, 10 Jul 2024 12:05:35 -0400 Subject: [TriEmbed] Fwd: [Watch the webinar replay] USB-C Power Delivery on STM32 without having to write any code In-Reply-To: <438478331.21261544.1720623796235@nld1mktmail-batch1f.marketo.org> References: <438478331.21261544.1720623796235@nld1mktmail-batch1f.marketo.org> Message-ID: This is a webinar that I thought folks might interested in. ---------- Forwarded message --------- From: STMicroelectronics Date: Wed, Jul 10, 2024 at 11:18?AM Subject: [Watch the webinar replay] USB-C Power Delivery on STM32 without having to write any code To: Webinar additional resources View in browser [image: STMicroelectronics] [image: STMicroelectronics] USB-C Power Delivery on STM32 without having to write any code Webinar broadcasted on July 9, 2024 * Hi Scott* Sorry we missed you during our webinar on *USB-C Power Delivery on STM32 without having to write any code*. Here is a quick recap of what we discussed and the link to the webinar recording. ? how to generate embedded software for USB-C Power Delivery applications without writing any code ? X-CUBE-TCPP expansion software for the STM32CubeMX ? live examples of Certified Code generation for Type-C Power Delivery Watch the webinar on-demand and find additional resource at the link below. Watch the replay Thank you again and we hope to see you soon. The ST Webinar Team *UPCOMING EVENTS & TECHNICAL SEMINARS* Learn new skills and discover the latest technologies through our events, online courses and seminars as well as many other resources Find one near you! [image: LinkedIn] [image: Instagram] [image: YouTube] Manage your email settings or choose to unsubscribe from emails you no longer wish to receive by clicking here . ?2024 STMicroelectronics Int N.V - All rights reserved | Terms of Use | Privacy Policy | Contacts -- 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.* -------------- next part -------------- An HTML attachment was scrubbed... URL: From scottghall1 at gmail.com Wed Jul 10 11:31:04 2024 From: scottghall1 at gmail.com (Scott Hall) Date: Wed, 10 Jul 2024 12:31:04 -0400 Subject: [TriEmbed] Need DevOps person where I work Message-ID: My work has the need for a DevOps person: - CI/CD pipeline (Continuous Integration and Continuous Deployment) - Software build & delivery for static analysis, automated unit testing, and integration testing - Build processes, steps, sequencing, and conditional rules - *"automating CI/CD throughout development, testing, production, and monitoring phases of the software development lifecycle"* - GitLab pipeline (and maybe some GitHub pipeline work as well) - Proficient in GitLab and GitLab processes - YAML development - Docker container management - GitLab / JIRA integration - Workflow automation They are looking for a contractor to work through a preferred contracting vendor, full or half-or-3/4-time, remote or on-site (RTP): Pirelli Pandac Triple Crown Consulting ppandac at tripleco.com - and please mention me so Pirelli knows the right job you would be applying for If you are looking for work, or a side-hustle to supplement your income let me know. -- 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.* -------------- next part -------------- An HTML attachment was scrubbed... URL: From mikelisanke at gmail.com Mon Jul 15 23:27:32 2024 From: mikelisanke at gmail.com (Mike Lisanke) Date: Tue, 16 Jul 2024 00:27:32 -0400 Subject: [TriEmbed] Fwd: [electronics101] Z80 discontinued (announced in April) In-Reply-To: <1B8d.1721103042089354614.R0F5@groups.io> References: <1B8d.1721103042089354614.R0F5@groups.io> Message-ID: Z80 was the first (of many CPUs) I had in my earliest personal computer. And I had it about 45 years ago! That PC was the Exidy Sorcerer. And I used many other CPUs of the time in SBCs. And eventually did a lot with 6502 in Atari. I suspect they only end a CPUs life when the last integrator stops using it. ---------- Forwarded message --------- From: jong kung via groups.io Date: Tue, Jul 16, 2024 at 12:10?AM Subject: [electronics101] Z80 discontinued (announced in April) To: Hi guys, I?m sure many of you already heard. But I just heard this and I thought I?ll pass it on. https://www.techspot.com/news/102684-zilog-discontinuing-z80-microprocessor-after-almost-50-years.html The post was made in April 2024. I knew some variant of 6502 was still being made but I didn?t know z80 was being made (until now). Enjoy the read, Jong -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#98099): https://groups.io/g/electronics101/message/98099 Mute This Topic: https://groups.io/mt/107246448/2367122 Group Owner: electronics101+owner at groups.io Unsubscribe: https://groups.io/g/electronics101/leave/7725298/2367122/1797702260/xyzzy [ MikeLisanke at gmail.com] -=-=-=-=-=-=-=-=-=-=-=- -- Best regards, Mike -------------- next part -------------- An HTML attachment was scrubbed... URL: From brad at bfayette.com Tue Jul 16 05:34:42 2024 From: brad at bfayette.com (brad at bfayette.com) Date: Tue, 16 Jul 2024 10:34:42 +0000 Subject: [TriEmbed] Fwd: [electronics101] Z80 discontinued (announced in April) In-Reply-To: References: <1B8d.1721103042089354614.R0F5@groups.io> Message-ID: Well, that is a pretty good run.? It will always be available in emulation or FPGA fabric. RIP Captain Zilog. Regards, Brad Fayette Blessed?are?the?geeks,?for?they?shall?inherit?the?earth. Sent from my MEK6800D1. Sent with Proton Mail secure email. On Tuesday, July 16th, 2024 at 12:27 AM, Mike Lisanke via TriEmbed wrote: > Z80 was the first (of many CPUs) I had in my earliest personal computer. And I had it about 45 years ago!That PC was the Exidy Sorcerer. And I used many other CPUs of the time in SBCs. And eventually did a lot with 6502 in Atari. > I suspect they only end a CPUs life when the last integrator stops using it. > > ---------- Forwarded message --------- > From: jong kung via groups.io > Date: Tue, Jul 16, 2024 at 12:10?AM > Subject: [electronics101] Z80 discontinued (announced in April) > To: > > > Hi guys, > > > I?m sure many of you already heard. But I just heard this and I thought I?ll pass it on. > > https://www.techspot.com/news/102684-zilog-discontinuing-z80-microprocessor-after-almost-50-years.html > > The post was made in April 2024. I knew some variant of 6502 was still being made but I didn?t know z80 was being made (until now). > > > Enjoy the read, > > > Jong > > > -=-=-=-=-=-=-=-=-=-=-=- > Groups.io Links: You receive all messages sent to this group. > View/Reply Online (#98099): https://groups.io/g/electronics101/message/98099 > Mute This Topic: https://groups.io/mt/107246448/2367122 > Group Owner: electronics101+owner at groups.io > Unsubscribe: https://groups.io/g/electronics101/leave/7725298/2367122/1797702260/xyzzy [MikeLisanke at gmail.com] > -=-=-=-=-=-=-=-=-=-=-=- > > > > -- > Best regards, Mike -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: publickey - brad at bfayette.com - 0x2B44E330.asc Type: application/pgp-keys Size: 1690 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 509 bytes Desc: OpenPGP digital signature URL: From scottghall1 at gmail.com Tue Jul 16 08:37:50 2024 From: scottghall1 at gmail.com (Scott Hall) Date: Tue, 16 Jul 2024 09:37:50 -0400 Subject: [TriEmbed] Fwd: [electronics101] Z80 discontinued (announced in April) In-Reply-To: References: <1B8d.1721103042089354614.R0F5@groups.io> Message-ID: My first computer in 1978 was a Heathkit H8 with an 8080 CPU running at 4.5 MHz. Other than the Intel interrupt controller and the CPU all the other chips were capable of faster speeds, so I replaced the interrupt controller and the clock divider and dropped a Z80C when it was available in to goose it up to 8 MHz. When I got my Heathkit H150 (an IBM XT clone) I immediately got an AST 8080 coprocessing board with no CPU that I also dropped in a Z80C - so that I could run my CPM software from the H8 on the H150 from within MS-DOS. Around that time (1983) our microprocessors class lab was getting ready to retire its old Intel Prompt '80s, and so for extra credit several of us dropped in Z80Bs and did a couple of experiments with the extended instruction set. (Completing the lab got you an A, I don't know why several of us were compelled to do extra credit other than we completed the lab well before the end of the semester.) Interestingly by that time I was already taking Commodore VIC-20 motherboards (6502 CPU) and C64 motherboards (6510 CPU) and mounting them on rack panels, burning my own EPROMs (the UV-erase type), and using the cartridge port to control radio station equipment and perform numerous functions in the studio. I found the 6500-series easier to program for than the Z80, but the drivers for the periphery harder to figure out. - sgh On Tue, Jul 16, 2024 at 12:28?AM Mike Lisanke via TriEmbed < triembed at triembed.org> wrote: > Z80 was the first (of many CPUs) I had in my earliest personal computer. > And I had it about 45 years ago! > That PC was the Exidy Sorcerer. And I used many other CPUs of the time in > SBCs. And eventually did a lot with 6502 in Atari. > I suspect they only end a CPUs life when the last integrator stops using > it. > > ---------- Forwarded message --------- > From: jong kung via groups.io > Date: Tue, Jul 16, 2024 at 12:10?AM > Subject: [electronics101] Z80 discontinued (announced in April) > To: > > > Hi guys, > > > I?m sure many of you already heard. But I just heard this and I thought > I?ll pass it on. > > > https://www.techspot.com/news/102684-zilog-discontinuing-z80-microprocessor-after-almost-50-years.html > > The post was made in April 2024. I knew some variant of 6502 was still > being made but I didn?t know z80 was being made (until now). > > > Enjoy the read, > > > Jong > > > -=-=-=-=-=-=-=-=-=-=-=- > Groups.io Links: You receive all messages sent to this group. > View/Reply Online (#98099): > https://groups.io/g/electronics101/message/98099 > Mute This Topic: https://groups.io/mt/107246448/2367122 > Group Owner: electronics101+owner at groups.io > Unsubscribe: > https://groups.io/g/electronics101/leave/7725298/2367122/1797702260/xyzzy > [MikeLisanke at gmail.com] > -=-=-=-=-=-=-=-=-=-=-=- > > > > > -- > Best regards, Mike > _______________________________________________ > 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/ > > -- 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.* -------------- next part -------------- An HTML attachment was scrubbed... URL: From brad at bfayette.com Tue Jul 16 09:13:16 2024 From: brad at bfayette.com (brad at bfayette.com) Date: Tue, 16 Jul 2024 14:13:16 +0000 Subject: [TriEmbed] Fwd: [electronics101] Z80 discontinued (announced in April) In-Reply-To: References: <1B8d.1721103042089354614.R0F5@groups.io> Message-ID: See the tag line for my first computer. Regards, Brad Fayette Blessed?are?the?geeks,?for?they?shall?inherit?the?earth. Sent from my MEK6800D1. Sent with Proton Mail secure email. On Tuesday, July 16th, 2024 at 9:37 AM, Scott Hall via TriEmbed wrote: > My first computer in 1978 was a Heathkit H8 with an 8080 CPU running at 4.5 MHz. Other than the Intel interrupt controller and the CPU all the other chips were capable of faster speeds, so I replaced the interrupt controller and the clock divider and dropped a Z80C when it was available in to goose it up to 8 MHz. When I got my Heathkit H150 (an IBM XT clone) I immediately got an AST 8080 coprocessing board with no CPU that I also dropped in a Z80C - so that I could run my CPM software from the H8 on the H150 from within MS-DOS. > Around that time (1983) our microprocessors class lab was getting ready to retire its old Intel Prompt '80s, and so for extra credit several of us dropped in Z80Bs and did a couple of experiments with the extended instruction set. (Completing the lab got you an A, I don't know why several of us were compelled to do extra credit other than we completed the lab well before the end of the semester.) > > Interestingly by that time I was already taking Commodore VIC-20 motherboards (6502 CPU) and C64 motherboards (6510 CPU) and mounting them on rack panels, burning my own EPROMs (the UV-erase type), and using the cartridge port to control radio station equipment and perform numerous functions in the studio. I found the 6500-series easier to program for than the Z80, but the drivers for the periphery harder to figure out. > > - sgh > > > On Tue, Jul 16, 2024 at 12:28?AM Mike Lisanke via TriEmbed wrote: > > > Z80 was the first (of many CPUs) I had in my earliest personal computer. And I had it about 45 years ago!That PC was the Exidy Sorcerer. And I used many other CPUs of the time in SBCs. And eventually did a lot with 6502 in Atari. > > I suspect they only end a CPUs life when the last integrator stops using it. > > > > ---------- Forwarded message --------- > > From: jong kung via groups.io > > Date: Tue, Jul 16, 2024 at 12:10?AM > > Subject: [electronics101] Z80 discontinued (announced in April) > > To: > > > > > > Hi guys, > > > > > > I?m sure many of you already heard. But I just heard this and I thought I?ll pass it on. > > > > https://www.techspot.com/news/102684-zilog-discontinuing-z80-microprocessor-after-almost-50-years.html > > > > The post was made in April 2024. I knew some variant of 6502 was still being made but I didn?t know z80 was being made (until now). > > > > > > Enjoy the read, > > > > > > Jong > > > > > > -=-=-=-=-=-=-=-=-=-=-=- > > Groups.io Links: You receive all messages sent to this group. > > View/Reply Online (#98099): https://groups.io/g/electronics101/message/98099 > > Mute This Topic: https://groups.io/mt/107246448/2367122 > > Group Owner: electronics101+owner at groups.io > > Unsubscribe: https://groups.io/g/electronics101/leave/7725298/2367122/1797702260/xyzzy [MikeLisanke at gmail.com] > > -=-=-=-=-=-=-=-=-=-=-=- > > > > > > > > -- > > Best regards, Mike > > _______________________________________________ > > 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/ > > > > -- > 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: publickey - brad at bfayette.com - 0x2B44E330.asc Type: application/pgp-keys Size: 1690 bytes Desc: not available URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 509 bytes Desc: OpenPGP digital signature URL: From carl.nobile at gmail.com Wed Jul 17 17:18:32 2024 From: carl.nobile at gmail.com (Carl Nobile) Date: Wed, 17 Jul 2024 18:18:32 -0400 Subject: [TriEmbed] The video of our last meeting has been published. Message-ID: Hi all, I just published the video of our last meeting on 2024-07-08. https://youtu.be/ydpHdpOrxes -------------------------------------------------------------- Carl J. Nobile (Software Engineer/API Design) carl.nobile at gmail.com -------------------------------------------------------------- -------------- next part -------------- An HTML attachment was scrubbed... URL: From pete at soper.us Sun Jul 28 07:30:07 2024 From: pete at soper.us (Pete Soper) Date: Sun, 28 Jul 2024 13:30:07 +0100 (GMT+01:00) Subject: [TriEmbed] 3D printing online Message-ID: <6c31f04b-c1da-45da-b8ad-ea3a42b73665@soper.us> I just noticed JLC does more than PCBs and related services. How about 3D printing, including in stainless steel? https://jlc3dp.com/3d-printing-quote Pete -------------- next part -------------- An HTML attachment was scrubbed... URL: From raubvogel at gmail.com Mon Jul 29 05:06:45 2024 From: raubvogel at gmail.com (Mauricio Tavares) Date: Mon, 29 Jul 2024 06:06:45 -0400 Subject: [TriEmbed] 3D printing online In-Reply-To: <6c31f04b-c1da-45da-b8ad-ea3a42b73665@soper.us> References: <6c31f04b-c1da-45da-b8ad-ea3a42b73665@soper.us> Message-ID: On Sun, Jul 28, 2024 at 8:30?AM Pete Soper via TriEmbed wrote: > > I just noticed JLC does more than PCBs and related services. How about 3D printing, including in stainless steel? > > https://jlc3dp.com/3d-printing-quote > > Pete It sure gives ideas From scottghall1 at gmail.com Mon Jul 29 15:51:01 2024 From: scottghall1 at gmail.com (Scott Hall) Date: Mon, 29 Jul 2024 16:51:01 -0400 Subject: [TriEmbed] Olympics dressage arena ... Message-ID: I just saw on the olympics a hockey-rink sized "Sandboni" running between contestants. Paul should have scaled up his and sold them a few ? -- probably a lot cheaper than what they spent! -- 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.* -------------- next part -------------- An HTML attachment was scrubbed... URL: