M@ M@z (he/him)
@matzelectronics.bsky.social
Geeky dad and husband, educator, product and web developer at playpiper.com.
Portfolio at matthewmatz.com. Open to contract/commission work.
Portfolio at matthewmatz.com. Open to contract/commission work.
Hi everyone! Shameless plug time - I've restocked the Apple //c replacement keyboard kits! You can purchase yours on my Tindie store here: www.tindie.com/products/mat...
Apple IIc Keyboard by MatzElectronics on Tindie
Replacement Keyboard for an early (Model A2S4000) Apple IIc Computer
www.tindie.com
November 7, 2025 at 2:28 AM
Hi everyone! Shameless plug time - I've restocked the Apple //c replacement keyboard kits! You can purchase yours on my Tindie store here: www.tindie.com/products/mat...
Reposted by M@ M@z (he/him)
🧪 science feed
Most people study what misinformation says.
We decided to study how it looks.
Using novel multi-modal AI methods, we study 17,848 posts by top climate denial accounts - and uncovered a new front in the misinformation war.
Here's what it means 🧵
www.tandfonline.com/doi/full/10....
We decided to study how it looks.
Using novel multi-modal AI methods, we study 17,848 posts by top climate denial accounts - and uncovered a new front in the misinformation war.
Here's what it means 🧵
www.tandfonline.com/doi/full/10....
November 4, 2025 at 9:44 PM
🧪 science feed
Reposted by M@ M@z (he/him)
Everyone needs to understand what Elon and DOGE are building, an AI driven panopticon that will know everything about you and will be used to ensure compliance with their fascist agenda. They are creating a unified database of everything the federal government has on every single American.
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March 31, 2025 at 7:10 PM
Everyone needs to understand what Elon and DOGE are building, an AI driven panopticon that will know everything about you and will be used to ensure compliance with their fascist agenda. They are creating a unified database of everything the federal government has on every single American.
🧵1/
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It's up for sale! Grab yours today! The ATTINY PRO is a small-but-capable ATtiny3217 development board with a form-factor similar to a Pro Micro.
It's like the original Arduino board, but with the much better peripherals of the Tiny AVR 1 and 2 series.
www.tindie.com/products/mat...
It's like the original Arduino board, but with the much better peripherals of the Tiny AVR 1 and 2 series.
www.tindie.com/products/mat...
March 17, 2025 at 8:37 PM
It's up for sale! Grab yours today! The ATTINY PRO is a small-but-capable ATtiny3217 development board with a form-factor similar to a Pro Micro.
It's like the original Arduino board, but with the much better peripherals of the Tiny AVR 1 and 2 series.
www.tindie.com/products/mat...
It's like the original Arduino board, but with the much better peripherals of the Tiny AVR 1 and 2 series.
www.tindie.com/products/mat...
The Raspberry Pi Pico came out just over 4 yrs ago. At the time, we had shelved a project we were building - it was good but we didn't love the boards we were using. When the Pico came out, we brought the project back & worked fast to finish it. Happy Pi Day / 4th Birthday make.playpiper.com !
Piper Make
Piper Make is a browser-based editor with included lessons, tutorials, and projects designed to introduce Python on the Raspberry Pi Pico. Piper Make uses Blockly and has lessons that introduce coding...
Make.playpiper.com
March 15, 2025 at 2:50 AM
The Raspberry Pi Pico came out just over 4 yrs ago. At the time, we had shelved a project we were building - it was good but we didn't love the boards we were using. When the Pico came out, we brought the project back & worked fast to finish it. Happy Pi Day / 4th Birthday make.playpiper.com !
Hi Electronics Bluesky! I made a new module for my Tindie store (and honestly, for me to use too!) It's a dev board based on the ATTINY 3217. It has an onboard CH340 for both programming via UPDI and for UART<>USB. I love these chips as I2C peripherals. Tindie.com/matzelectronics
March 11, 2025 at 6:34 AM
Hi Electronics Bluesky! I made a new module for my Tindie store (and honestly, for me to use too!) It's a dev board based on the ATTINY 3217. It has an onboard CH340 for both programming via UPDI and for UART<>USB. I love these chips as I2C peripherals. Tindie.com/matzelectronics
Reposted by M@ M@z (he/him)
I talk about race, openly and honestly. It's also what I do for a living, and while it can be uncomfortable for white bodied people to hear criticism aimed at white folks. If we are to move together as a society, it requires getting real and moving past the fragility.
I generally love following you and getting your knowledge and energy. But "white people this, white people that," comments are a step down.
I'm not saying it is reverse racism or anything like that, but it is a broad and weak generalization. It's like me saying all Trumpers are stupid rednecks.
I'm not saying it is reverse racism or anything like that, but it is a broad and weak generalization. It's like me saying all Trumpers are stupid rednecks.
February 8, 2025 at 2:52 AM
I talk about race, openly and honestly. It's also what I do for a living, and while it can be uncomfortable for white bodied people to hear criticism aimed at white folks. If we are to move together as a society, it requires getting real and moving past the fragility.
Reposted by M@ M@z (he/him)
what a surprise. 🙃
Elon Musk's and X's Role in 2024 Election Interference
The confessions of a concerned bird.
substack.com
January 26, 2025 at 8:22 AM
what a surprise. 🙃
New Tindie.com/stores/matzelectronics products in development! These are all capacitive-touch PCBs. Left one is a track pad, middle is a keypad, and right is an iPod-style rotary wheel.
January 22, 2025 at 1:31 AM
New Tindie.com/stores/matzelectronics products in development! These are all capacitive-touch PCBs. Left one is a track pad, middle is a keypad, and right is an iPod-style rotary wheel.
DOH! Forgot to check the box to remove the order number. Ugh.
January 22, 2025 at 1:25 AM
DOH! Forgot to check the box to remove the order number. Ugh.
Reposted by M@ M@z (he/him)
Trying to design an input stage for an ESP-32 based scope. Haven't had to bust out my own scope in a while. It amazes me how quickly this analog stuff can get complicated! Just trying to attenuate and bias a range from +/- 5V to 0 to 3.3v, and I'm 4 op-amps deep.
January 5, 2025 at 9:49 PM
Trying to design an input stage for an ESP-32 based scope. Haven't had to bust out my own scope in a while. It amazes me how quickly this analog stuff can get complicated! Just trying to attenuate and bias a range from +/- 5V to 0 to 3.3v, and I'm 4 op-amps deep.
I made a new thing! Here's a four digit 7-segment display module. It's nice and bright, and it's designed to be connected via I2C (STEMMA QT, QWIIC). Firmware is open source and written in Arduino so it's easy to modify to fit your needs.
Available here: www.tindie.com/products/mat...
Available here: www.tindie.com/products/mat...
7-Segment Clock Display by MatzElectronics on Tindie
A four-digit 7-segment clock display with an I2C interface, white LEDs, and 0.9" tall digits.
www.tindie.com
December 31, 2024 at 1:45 AM
I made a new thing! Here's a four digit 7-segment display module. It's nice and bright, and it's designed to be connected via I2C (STEMMA QT, QWIIC). Firmware is open source and written in Arduino so it's easy to modify to fit your needs.
Available here: www.tindie.com/products/mat...
Available here: www.tindie.com/products/mat...
Trying out my not-yet-finished mechanical keyboard this evening. It's my first mechanical keeb...it's going to take some getting used to, but I think I'll like it!
Not sold on using CircuitPython yet. A couple of weird issues that I have had to work around. I think I eventually land on Arduino.
Not sold on using CircuitPython yet. A couple of weird issues that I have had to work around. I think I eventually land on Arduino.
December 19, 2024 at 5:58 AM
Trying out my not-yet-finished mechanical keyboard this evening. It's my first mechanical keeb...it's going to take some getting used to, but I think I'll like it!
Not sold on using CircuitPython yet. A couple of weird issues that I have had to work around. I think I eventually land on Arduino.
Not sold on using CircuitPython yet. A couple of weird issues that I have had to work around. I think I eventually land on Arduino.
18 transistors and a boost converter later, and it's working!
I wanted a display with large digits and the dots in a clock config. It took a bit to source one & the company sold me 25 as a sample order. I didn't read the datasheet carefully enough. The segments need 6V and the dots need 3V.
I wanted a display with large digits and the dots in a clock config. It took a bit to source one & the company sold me 25 as a sample order. I didn't read the datasheet carefully enough. The segments need 6V and the dots need 3V.
December 18, 2024 at 5:21 AM
18 transistors and a boost converter later, and it's working!
I wanted a display with large digits and the dots in a clock config. It took a bit to source one & the company sold me 25 as a sample order. I didn't read the datasheet carefully enough. The segments need 6V and the dots need 3V.
I wanted a display with large digits and the dots in a clock config. It took a bit to source one & the company sold me 25 as a sample order. I didn't read the datasheet carefully enough. The segments need 6V and the dots need 3V.
Making progress on the hardware hacker keyboard!
The 128x32 OLED screen will fit well along the top row.
I just ordered the shell, which will have integrated stabilizers for the large keycaps.
Still finalizing the controller and USB hub PCBA. That will connect using an FPC cable.
The 128x32 OLED screen will fit well along the top row.
I just ordered the shell, which will have integrated stabilizers for the large keycaps.
Still finalizing the controller and USB hub PCBA. That will connect using an FPC cable.
December 12, 2024 at 7:21 AM
Making progress on the hardware hacker keyboard!
The 128x32 OLED screen will fit well along the top row.
I just ordered the shell, which will have integrated stabilizers for the large keycaps.
Still finalizing the controller and USB hub PCBA. That will connect using an FPC cable.
The 128x32 OLED screen will fit well along the top row.
I just ordered the shell, which will have integrated stabilizers for the large keycaps.
Still finalizing the controller and USB hub PCBA. That will connect using an FPC cable.
I hope everyone had a wonderful day of rest today. I decided to do the Black Friday sales thing and offer 10% off at my Tindie store.
Here's the shameless plug: I sell a replacement kybd for early Apple IIc computers & a nifty USB Host module:
Use code MATZ10%OFF
www.tindie.com/stores/matze...
Here's the shameless plug: I sell a replacement kybd for early Apple IIc computers & a nifty USB Host module:
Use code MATZ10%OFF
www.tindie.com/stores/matze...
MatzElectronics on Tindie
I'm an educator and maker from the US Pacific Northwest. My day job is as a middle school engineering teacher, and my side hustle is as a …
www.tindie.com
November 29, 2024 at 7:20 AM
I hope everyone had a wonderful day of rest today. I decided to do the Black Friday sales thing and offer 10% off at my Tindie store.
Here's the shameless plug: I sell a replacement kybd for early Apple IIc computers & a nifty USB Host module:
Use code MATZ10%OFF
www.tindie.com/stores/matze...
Here's the shameless plug: I sell a replacement kybd for early Apple IIc computers & a nifty USB Host module:
Use code MATZ10%OFF
www.tindie.com/stores/matze...
Reposted by M@ M@z (he/him)
author here: check out my coffee table book full of cool photos of electronics! it's totally accessible to kids and non-techy adults, and your nerdier friends and family will really enjoy it.
nostarch.com/open-circuits
nostarch.com/open-circuits
Open Circuits
A photographic exploration of the tiny design wonders hidden inside everyday electronics.
nostarch.com
November 22, 2024 at 5:22 PM
author here: check out my coffee table book full of cool photos of electronics! it's totally accessible to kids and non-techy adults, and your nerdier friends and family will really enjoy it.
nostarch.com/open-circuits
nostarch.com/open-circuits
Reposted by M@ M@z (he/him)
If you’re still masking - thank you.
If you’re cleaning the air - thank you.
If you’re staying home when sick - thank you.
If you realize vulnerable people are just as worthy of safety and survival as everyone else - thank you
If you’ve refused to toss us aside for “back to normal” - thank you.
If you’re cleaning the air - thank you.
If you’re staying home when sick - thank you.
If you realize vulnerable people are just as worthy of safety and survival as everyone else - thank you
If you’ve refused to toss us aside for “back to normal” - thank you.
What an unreal question. “It’s 2025, why haven’t you abandoned disabled and high-risk folks yet?”
“The rest of us all agreed to forget about you in 2021, why haven’t you caught up?”
“The rest of us all agreed to forget about you in 2021, why haven’t you caught up?”
November 20, 2024 at 1:50 AM
If you’re still masking - thank you.
If you’re cleaning the air - thank you.
If you’re staying home when sick - thank you.
If you realize vulnerable people are just as worthy of safety and survival as everyone else - thank you
If you’ve refused to toss us aside for “back to normal” - thank you.
If you’re cleaning the air - thank you.
If you’re staying home when sick - thank you.
If you realize vulnerable people are just as worthy of safety and survival as everyone else - thank you
If you’ve refused to toss us aside for “back to normal” - thank you.
I'd love to be a part of this!
Starting a new list of mechanical keyboard makers and enthusiasts, poke me if you think you should be on it!
go.bsky.app/CUU2akC
go.bsky.app/CUU2akC
November 18, 2024 at 1:46 AM
I'd love to be a part of this!
Reposted by M@ M@z (he/him)
Starting a new list of mechanical keyboard makers and enthusiasts, poke me if you think you should be on it!
go.bsky.app/CUU2akC
go.bsky.app/CUU2akC
November 3, 2024 at 3:27 PM
Starting a new list of mechanical keyboard makers and enthusiasts, poke me if you think you should be on it!
go.bsky.app/CUU2akC
go.bsky.app/CUU2akC
Does anyone know of a good solution for stabilizers with low profile keyswitches?
November 18, 2024 at 1:45 AM
Does anyone know of a good solution for stabilizers with low profile keyswitches?
I had a lot of fun designing the keyboard replacement for my Apple IIc (which you can buy on Tindie.com!). I might just be hooked on this custom keyboard thing...so I'm thinking of building a "hardware hacker" keeb. A modified 1800 layout with an OLED screen, a USB Hub, and voltmeter. Thoughts?
November 16, 2024 at 6:04 AM
I had a lot of fun designing the keyboard replacement for my Apple IIc (which you can buy on Tindie.com!). I might just be hooked on this custom keyboard thing...so I'm thinking of building a "hardware hacker" keeb. A modified 1800 layout with an OLED screen, a USB Hub, and voltmeter. Thoughts?