Mike Coats 🏴🇪🇺🌍♻️
@mikecoats.social
An unending tinkerer of all things hardware and software.
Views & posts are my own. Re-posts not endorsements.
Profile photo: Evelyn/OSHWA
Views & posts are my own. Re-posts not endorsements.
Profile photo: Evelyn/OSHWA
Pinned
Mike Coats 🏴🇪🇺🌍♻️
@mikecoats.social
· Sep 25
Introducing Touchy Subject
I'm proud to announce the release of Touchy Subject, a Qwiic/STEMMA QT compatible breakout board for the AT42QT2120 12-key capacitive touch sensor, the development of which has been sponsored by PCBWay.
mikecoats.com
My latest blog post: Introducing Touchy Subject
mikecoats.com/touchy-subject/
I'm proud to announce Touchy Subject, a Qwiic/STEMMA QT compatible breakout for the AT42QT2120 capacitive touch sensor; development sponsored by PCBWay.
#electro#electronicsr#openHardwareu#openSource
mikecoats.com/touchy-subject/
I'm proud to announce Touchy Subject, a Qwiic/STEMMA QT compatible breakout for the AT42QT2120 capacitive touch sensor; development sponsored by PCBWay.
#electro#electronicsr#openHardwareu#openSource
My latest blog post: Using a Spy! Break! Inject! to Sniff I2C Traffic
mikecoats.com/spy-break-in...
I've been emailing about debugging I2C with my Spy! Break! Inject! and I thought that writing this up as a blog post might be useful to others.
#electronics #openHardware #reverseEngineering
mikecoats.com/spy-break-in...
I've been emailing about debugging I2C with my Spy! Break! Inject! and I thought that writing this up as a blog post might be useful to others.
#electronics #openHardware #reverseEngineering
Using a Spy! Break! Inject! to Sniff I2C Traffic
I've been exchanging emails, discussing debugging protocols like I2C with my Spy! Break! Inject! and I thought that writing this up as a blog post might be useful to others.
mikecoats.com
January 31, 2026 at 8:19 PM
My latest blog post: Using a Spy! Break! Inject! to Sniff I2C Traffic
mikecoats.com/spy-break-in...
I've been emailing about debugging I2C with my Spy! Break! Inject! and I thought that writing this up as a blog post might be useful to others.
#electronics #openHardware #reverseEngineering
mikecoats.com/spy-break-in...
I've been emailing about debugging I2C with my Spy! Break! Inject! and I thought that writing this up as a blog post might be useful to others.
#electronics #openHardware #reverseEngineering
My biggest print to date! 🤞
I've never "filled" the build plate before. These will be two 4x2 gridfinity bins with vertical dividers to hold my @lectronz.com and @tindie.com stock. I'm finally getting around to bringing at least a modicum of organisation to my office.
#3dPrinting
I've never "filled" the build plate before. These will be two 4x2 gridfinity bins with vertical dividers to hold my @lectronz.com and @tindie.com stock. I'm finally getting around to bringing at least a modicum of organisation to my office.
#3dPrinting
January 19, 2026 at 3:21 PM
My biggest print to date! 🤞
I've never "filled" the build plate before. These will be two 4x2 gridfinity bins with vertical dividers to hold my @lectronz.com and @tindie.com stock. I'm finally getting around to bringing at least a modicum of organisation to my office.
#3dPrinting
I've never "filled" the build plate before. These will be two 4x2 gridfinity bins with vertical dividers to hold my @lectronz.com and @tindie.com stock. I'm finally getting around to bringing at least a modicum of organisation to my office.
#3dPrinting
Spot the difference!
(Other than one's been soldered up already.)
#electronics #openHardware #qualityControl
(Other than one's been soldered up already.)
#electronics #openHardware #qualityControl
January 7, 2026 at 10:36 AM
Spot the difference!
(Other than one's been soldered up already.)
#electronics #openHardware #qualityControl
(Other than one's been soldered up already.)
#electronics #openHardware #qualityControl
January 6, 2026 at 1:26 PM
January 3, 2026 at 8:53 AM
My latest blog post: Presents from PCBWay
mikecoats.com/pcbway-prese...
In early December, Emily from @pcbwayofficial.bsky.social sent me a short message saying they were preparing some small gifts in time for Christmas and asking if I was interested in receiving them?
#sponsored
mikecoats.com/pcbway-prese...
In early December, Emily from @pcbwayofficial.bsky.social sent me a short message saying they were preparing some small gifts in time for Christmas and asking if I was interested in receiving them?
#sponsored
Presents from PCBWay
In early December, Emily from PCBWay sent me a short message saying they were preparing some small gifts in time for Christmas and asking if I was interested in receiving them?
mikecoats.com
January 2, 2026 at 9:12 PM
My latest blog post: Presents from PCBWay
mikecoats.com/pcbway-prese...
In early December, Emily from @pcbwayofficial.bsky.social sent me a short message saying they were preparing some small gifts in time for Christmas and asking if I was interested in receiving them?
#sponsored
mikecoats.com/pcbway-prese...
In early December, Emily from @pcbwayofficial.bsky.social sent me a short message saying they were preparing some small gifts in time for Christmas and asking if I was interested in receiving them?
#sponsored
My latest blog post: Trusted Certificates for Private Servers - Part 3
mikecoats.com/trusted-cert...
In the final post in this series, I show how to retrieve trusted certificates for your internal infrastructure, performing DNS-01 challenges from within OpenWrt.
#code #openWrt #linux #networking
mikecoats.com/trusted-cert...
In the final post in this series, I show how to retrieve trusted certificates for your internal infrastructure, performing DNS-01 challenges from within OpenWrt.
#code #openWrt #linux #networking
Trusted Certificates for Private Servers - Part 3
In this third and final installment in the series, I'll demonstrate how to retrieve trusted certificates for your internal infrastructure, automatically performing DNS-01 challenges from within OpenWr...
mikecoats.com
January 1, 2026 at 9:43 PM
My latest blog post: Trusted Certificates for Private Servers - Part 3
mikecoats.com/trusted-cert...
In the final post in this series, I show how to retrieve trusted certificates for your internal infrastructure, performing DNS-01 challenges from within OpenWrt.
#code #openWrt #linux #networking
mikecoats.com/trusted-cert...
In the final post in this series, I show how to retrieve trusted certificates for your internal infrastructure, performing DNS-01 challenges from within OpenWrt.
#code #openWrt #linux #networking
My proofs of concept are complete!
I've managed to print "Hello, world!" on my 4610-TG3 from some Rust code running on an ESP32-C6. I've also dumped the opening screens from Zork to get a feel for where the project's going.
bsky.app/profile/mike...
#electronics #esp32 #rustLang #riscV #vintage
I've managed to print "Hello, world!" on my 4610-TG3 from some Rust code running on an ESP32-C6. I've also dumped the opening screens from Zork to get a feel for where the project's going.
bsky.app/profile/mike...
#electronics #esp32 #rustLang #riscV #vintage
December 23, 2025 at 8:06 PM
My proofs of concept are complete!
I've managed to print "Hello, world!" on my 4610-TG3 from some Rust code running on an ESP32-C6. I've also dumped the opening screens from Zork to get a feel for where the project's going.
bsky.app/profile/mike...
#electronics #esp32 #rustLang #riscV #vintage
I've managed to print "Hello, world!" on my 4610-TG3 from some Rust code running on an ESP32-C6. I've also dumped the opening screens from Zork to get a feel for where the project's going.
bsky.app/profile/mike...
#electronics #esp32 #rustLang #riscV #vintage
Reposted by Mike Coats 🏴🇪🇺🌍♻️
Bambu was closed sourced from the jump, still has numerous clones, and is still the market leader despite that. Open source isn't Prusa's problem, but he's really trying to become a problem for Open Source.
December 20, 2025 at 7:08 PM
Bambu was closed sourced from the jump, still has numerous clones, and is still the market leader despite that. Open source isn't Prusa's problem, but he's really trying to become a problem for Open Source.
I love the modern embedded firmware development ecosystem that's built up over the last few years.
A couple of decades ago you used to have to pay for your compiler, pay for an assembler, and pay for the programmer.
A couple of decades ago you used to have to pay for your compiler, pay for an assembler, and pay for the programmer.
December 19, 2025 at 9:53 PM
I love the modern embedded firmware development ecosystem that's built up over the last few years.
A couple of decades ago you used to have to pay for your compiler, pay for an assembler, and pay for the programmer.
A couple of decades ago you used to have to pay for your compiler, pay for an assembler, and pay for the programmer.
Reposted by Mike Coats 🏴🇪🇺🌍♻️
This is not an open source licence. oshwa.org/resources/op...
December 19, 2025 at 4:38 PM
This is not an open source licence. oshwa.org/resources/op...
Reposted by Mike Coats 🏴🇪🇺🌍♻️
I really wish Prusa had tried to work with OSI, CC, and/or OSHWA instead of greenfielding a new license.
Even if the principle behind this license wasn't misguided, I don't think it's precise enough to legally accomplish any of the goals Prusa stated.
Please don't use this.
Even if the principle behind this license wasn't misguided, I don't think it's precise enough to legally accomplish any of the goals Prusa stated.
Please don't use this.
We're open-sourcing the full CAD files of the CORE One and CORE One L, released under a new license we built for the maker community. Read more about it in Josef's new article: blog.prusa3d.com/core-one-cad...
December 19, 2025 at 4:19 PM
I really wish Prusa had tried to work with OSI, CC, and/or OSHWA instead of greenfielding a new license.
Even if the principle behind this license wasn't misguided, I don't think it's precise enough to legally accomplish any of the goals Prusa stated.
Please don't use this.
Even if the principle behind this license wasn't misguided, I don't think it's precise enough to legally accomplish any of the goals Prusa stated.
Please don't use this.
Time to get ready for some holiday reverse engineering. 10 points to the first person to guess what this board is from.
#vintage #electronics #ibm
#vintage #electronics #ibm
December 15, 2025 at 11:45 AM
Time to get ready for some holiday reverse engineering. 10 points to the first person to guess what this board is from.
#vintage #electronics #ibm
#vintage #electronics #ibm
My latest blog post: momtag
mikecoats.com/momtag/
Introducing momtag, or Mike's Opinionated Music Tagger. Keep a small collection of music reasonably and consistently organised.
#code #linux #python #openSource
mikecoats.com/momtag/
Introducing momtag, or Mike's Opinionated Music Tagger. Keep a small collection of music reasonably and consistently organised.
#code #linux #python #openSource
momtag
Introducing momtag, or Mike's Opinionated Music Tagger. Keep a small collection of music reasonably and consistently organised.
mikecoats.com
December 9, 2025 at 12:28 PM
My latest blog post: momtag
mikecoats.com/momtag/
Introducing momtag, or Mike's Opinionated Music Tagger. Keep a small collection of music reasonably and consistently organised.
#code #linux #python #openSource
mikecoats.com/momtag/
Introducing momtag, or Mike's Opinionated Music Tagger. Keep a small collection of music reasonably and consistently organised.
#code #linux #python #openSource
My latest blog post: Trusted Certificates for Private Servers - Part 2
mikecoats.com/trusted-cert...
In part two of this series, I'll show you how to retrieve trusted certificates for your private Caddy server, via Mythic Beasts.
#code #debian #linux #networking
mikecoats.com/trusted-cert...
In part two of this series, I'll show you how to retrieve trusted certificates for your private Caddy server, via Mythic Beasts.
#code #debian #linux #networking
Trusted Certificates for Private Servers - Part 2
In part two of this series, I'll show you how to retrieve trusted certificates for your private Caddy server, via Mythic Beasts.
mikecoats.com
December 1, 2025 at 2:48 PM
My latest blog post: Trusted Certificates for Private Servers - Part 2
mikecoats.com/trusted-cert...
In part two of this series, I'll show you how to retrieve trusted certificates for your private Caddy server, via Mythic Beasts.
#code #debian #linux #networking
mikecoats.com/trusted-cert...
In part two of this series, I'll show you how to retrieve trusted certificates for your private Caddy server, via Mythic Beasts.
#code #debian #linux #networking
My latest blog post: Trusted Certificates for Private Servers - Part 1
mikecoats.com/trusted-cert...
In part one of this series, I'll show you how to generate self-signed, untrusted certificates for your private Caddy server.
#code #debian #linux #networking
mikecoats.com/trusted-cert...
In part one of this series, I'll show you how to generate self-signed, untrusted certificates for your private Caddy server.
#code #debian #linux #networking
Trusted Certificates for Private Servers - Part 1
In part one of this series, I'll show you how to generate self-signed, untrusted certificates for your private Caddy server.
mikecoats.com
November 21, 2025 at 1:48 PM
My latest blog post: Trusted Certificates for Private Servers - Part 1
mikecoats.com/trusted-cert...
In part one of this series, I'll show you how to generate self-signed, untrusted certificates for your private Caddy server.
#code #debian #linux #networking
mikecoats.com/trusted-cert...
In part one of this series, I'll show you how to generate self-signed, untrusted certificates for your private Caddy server.
#code #debian #linux #networking
Reposted by Mike Coats 🏴🇪🇺🌍♻️
i did a 15 minute impromptu talk about glasgow/amaranth/yowasp/grebedoc and why i think these tools are interesting and special for @oshwassociation.bsky.social, you can watch a recording: youtu.be/Y_TtMzmuXoY?...
Show and Tell Monthly: November 2025
YouTube video by The Open Source Hardware Association
youtu.be
November 20, 2025 at 7:29 PM
i did a 15 minute impromptu talk about glasgow/amaranth/yowasp/grebedoc and why i think these tools are interesting and special for @oshwassociation.bsky.social, you can watch a recording: youtu.be/Y_TtMzmuXoY?...
My latest blog post: My Experience Using PCBWay for Sponsored Prototyping
mikecoats.com/pcbway-exper...
Emily from @pcbwayofficial.bsky.social reached out to offer some free prototyping for my projects. I was delighted and jumped at the opportunity.
#electronics #hardware #openHardware #sponsored
mikecoats.com/pcbway-exper...
Emily from @pcbwayofficial.bsky.social reached out to offer some free prototyping for my projects. I was delighted and jumped at the opportunity.
#electronics #hardware #openHardware #sponsored
My Experience Using PCBWay for Sponsored Prototyping
Earlier this year, Emily from PCBWay reached out to offer some free prototyping for my projects. I was delighted and jumped at the opportunity.
mikecoats.com
November 11, 2025 at 3:55 PM
My latest blog post: My Experience Using PCBWay for Sponsored Prototyping
mikecoats.com/pcbway-exper...
Emily from @pcbwayofficial.bsky.social reached out to offer some free prototyping for my projects. I was delighted and jumped at the opportunity.
#electronics #hardware #openHardware #sponsored
mikecoats.com/pcbway-exper...
Emily from @pcbwayofficial.bsky.social reached out to offer some free prototyping for my projects. I was delighted and jumped at the opportunity.
#electronics #hardware #openHardware #sponsored
Reposted by Mike Coats 🏴🇪🇺🌍♻️
Dirty disgusting terribly good
November 7, 2025 at 2:40 PM
Dirty disgusting terribly good
My latest blog post: Cheap and Dirty 5-volt Supply
mikecoats.com/cheap-dirty-...
The old adage goes, 'if it's stupid, but it works, then it's not stupid.' This is possibly the cheapest and dirtiest 5-volt power supply money can buy.
#electronics #hardware #hack #power
mikecoats.com/cheap-dirty-...
The old adage goes, 'if it's stupid, but it works, then it's not stupid.' This is possibly the cheapest and dirtiest 5-volt power supply money can buy.
#electronics #hardware #hack #power
Cheap and Dirty 5-volt Supply
The old adage goes, 'if it's stupid, but it works, then it's not stupid.' This is possibly the cheapest and dirtiest 5-volt power supply money can buy.
mikecoats.com
November 7, 2025 at 2:32 PM
My latest blog post: Cheap and Dirty 5-volt Supply
mikecoats.com/cheap-dirty-...
The old adage goes, 'if it's stupid, but it works, then it's not stupid.' This is possibly the cheapest and dirtiest 5-volt power supply money can buy.
#electronics #hardware #hack #power
mikecoats.com/cheap-dirty-...
The old adage goes, 'if it's stupid, but it works, then it's not stupid.' This is possibly the cheapest and dirtiest 5-volt power supply money can buy.
#electronics #hardware #hack #power
My latest blog post: Touchy Subject is Available
mikecoats.com/touchy-subje...
Touchy Subject breakouts for the AT42QT2120 12-key touch sensor (development sponsored by @pcbwayofficial.bsky.social) are now available for purchase at @lectronz.com.
#electronics #hardware #openHardware #sponsored
mikecoats.com/touchy-subje...
Touchy Subject breakouts for the AT42QT2120 12-key touch sensor (development sponsored by @pcbwayofficial.bsky.social) are now available for purchase at @lectronz.com.
#electronics #hardware #openHardware #sponsored
Touchy Subject is Available
My Touchy Subject breakout boards for the AT42QT2120 12-key capacitive touch sensor, whose development was sponsored by PCBWay, are now available for purchase.
mikecoats.com
November 6, 2025 at 11:10 AM
My latest blog post: Touchy Subject is Available
mikecoats.com/touchy-subje...
Touchy Subject breakouts for the AT42QT2120 12-key touch sensor (development sponsored by @pcbwayofficial.bsky.social) are now available for purchase at @lectronz.com.
#electronics #hardware #openHardware #sponsored
mikecoats.com/touchy-subje...
Touchy Subject breakouts for the AT42QT2120 12-key touch sensor (development sponsored by @pcbwayofficial.bsky.social) are now available for purchase at @lectronz.com.
#electronics #hardware #openHardware #sponsored
My latest blog post: Open Hardware Month 2025
mikecoats.com/open-hardwar...
October is Open Hardware Month, and @oshwassociation.bsky.social is celebrating with a 12-hour live stream on the 6th. See amazing makers share their projects and why Open Hardware is important.
#openHardware #openSource
mikecoats.com/open-hardwar...
October is Open Hardware Month, and @oshwassociation.bsky.social is celebrating with a 12-hour live stream on the 6th. See amazing makers share their projects and why Open Hardware is important.
#openHardware #openSource
Open Hardware Month 2025
October is Open Hardware Month, and the Open Source Hardware Association is celebrating with a 12-hour live stream on the 6th. See amazing makers show off their projects and share why Open Hardware is...
mikecoats.com
October 3, 2025 at 10:36 AM
My latest blog post: Open Hardware Month 2025
mikecoats.com/open-hardwar...
October is Open Hardware Month, and @oshwassociation.bsky.social is celebrating with a 12-hour live stream on the 6th. See amazing makers share their projects and why Open Hardware is important.
#openHardware #openSource
mikecoats.com/open-hardwar...
October is Open Hardware Month, and @oshwassociation.bsky.social is celebrating with a 12-hour live stream on the 6th. See amazing makers share their projects and why Open Hardware is important.
#openHardware #openSource
Reposted by Mike Coats 🏴🇪🇺🌍♻️
Open Hardware Month (OHM): October 2 certified board highlights @oshwassociation.bsky.social
blog.adafruit.com/2025/10/02/o...
blog.adafruit.com/2025/10/02/o...
October 2, 2025 at 4:09 PM
Open Hardware Month (OHM): October 2 certified board highlights @oshwassociation.bsky.social
blog.adafruit.com/2025/10/02/o...
blog.adafruit.com/2025/10/02/o...
My latest blog post: Contributing to the CircuitPython Community Bundle
mikecoats.com/contributing...
I've been working with the AT42QT2120 touch sensor, and wanted to write a @circuitpython.org driver and publish it for others to use.
#circuitPython #embedded #openSource #python
mikecoats.com/contributing...
I've been working with the AT42QT2120 touch sensor, and wanted to write a @circuitpython.org driver and publish it for others to use.
#circuitPython #embedded #openSource #python
Contributing to the CircuitPython Community Bundle
I've been building a new PCB around the AT42QT2120 touch sensor, and to make use of the board I wanted to write a CircuitPython driver for it and publish it for others to use.
mikecoats.com
October 2, 2025 at 10:33 AM
My latest blog post: Contributing to the CircuitPython Community Bundle
mikecoats.com/contributing...
I've been working with the AT42QT2120 touch sensor, and wanted to write a @circuitpython.org driver and publish it for others to use.
#circuitPython #embedded #openSource #python
mikecoats.com/contributing...
I've been working with the AT42QT2120 touch sensor, and wanted to write a @circuitpython.org driver and publish it for others to use.
#circuitPython #embedded #openSource #python
Reposted by Mike Coats 🏴🇪🇺🌍♻️
If you want this poster to remind you to slow down you can get it by following me and @cyborggarbage.bsky.social October 6 on the Goshwassociation 12 hour Livestream! Any new members or donations of any size will get you a cool slow sloth riso poster! Woohoo! 💾⚙️🦥
September 30, 2025 at 10:06 PM
If you want this poster to remind you to slow down you can get it by following me and @cyborggarbage.bsky.social October 6 on the Goshwassociation 12 hour Livestream! Any new members or donations of any size will get you a cool slow sloth riso poster! Woohoo! 💾⚙️🦥