Tyler Crumpton
@crump.space
IIoT builder, electronics tinkerer, software creator, all-around Maker. (he/him)
🌎 Boston, MA
🌎 Boston, MA
I also had the opportunity to give a talk on it! Covered some of the previous work done by @dmitry.gr that allowed us to be able to do this at all, as well as some of the specifics about the badge firmware and other tooling we put together.
November 17, 2025 at 2:22 AM
I also had the opportunity to give a talk on it! Covered some of the previous work done by @dmitry.gr that allowed us to be able to do this at all, as well as some of the specifics about the badge firmware and other tooling we put together.
I got to develop the conference badges for PhreakNIC this year, alongside @itsamenathan.xyz and Mog!
PN’s first electronic badge, and we didn’t even need to design a custom PCB for it! The guts of these badges are discarded electronic shelf labels that had dead, non-replaceable batteries.
PN’s first electronic badge, and we didn’t even need to design a custom PCB for it! The guts of these badges are discarded electronic shelf labels that had dead, non-replaceable batteries.
November 17, 2025 at 2:22 AM
I got to develop the conference badges for PhreakNIC this year, alongside @itsamenathan.xyz and Mog!
PN’s first electronic badge, and we didn’t even need to design a custom PCB for it! The guts of these badges are discarded electronic shelf labels that had dead, non-replaceable batteries.
PN’s first electronic badge, and we didn’t even need to design a custom PCB for it! The guts of these badges are discarded electronic shelf labels that had dead, non-replaceable batteries.
I was also able to get some of the CC1110 wireless stuff working! I sent out some SubGHz packets and picked them up on the Flipper Zero! 🐬
September 1, 2025 at 3:00 PM
I was also able to get some of the CC1110 wireless stuff working! I sent out some SubGHz packets and picked them up on the Flipper Zero! 🐬
Since these are bistable LCDs and not ePaper/eInk screens, they refresh rather quickly while still holding a persistent image without power!
September 1, 2025 at 3:00 PM
Since these are bistable LCDs and not ePaper/eInk screens, they refresh rather quickly while still holding a persistent image without power!
Made some progress on these ZBD epop 55c-RB ESLs this weekend! Ended up soldering jumpers straight to the board for now because my pogo pins were too large. Was able to get some basic text and symbol rendering working thanks to a ton of prior art by @dmitry.gr ❤️
September 1, 2025 at 3:00 PM
Made some progress on these ZBD epop 55c-RB ESLs this weekend! Ended up soldering jumpers straight to the board for now because my pogo pins were too large. Was able to get some basic text and symbol rendering working thanks to a ton of prior art by @dmitry.gr ❤️
Got my hands on a bunch of ZBD epop electronic shelf labels that I’m hoping to flash with openepaperlink.de (or at least parts of their work). These aren’t proper “EPaper”, but are bistable LCDs which also hold their image mostly indefinitely without power.
August 29, 2025 at 1:08 PM
Got my hands on a bunch of ZBD epop electronic shelf labels that I’m hoping to flash with openepaperlink.de (or at least parts of their work). These aren’t proper “EPaper”, but are bistable LCDs which also hold their image mostly indefinitely without power.
First time at the MIT Flea today! I’ve been meaning to make it out there for a while now, and I finally did! Lots of cool stuff and awesome people!
April 20, 2025 at 11:12 PM
First time at the MIT Flea today! I’ve been meaning to make it out there for a while now, and I finally did! Lots of cool stuff and awesome people!
I don’t know why there are so many of these. I’d been searching for ones like that but with the CC resistors (or at least the pins broken out!), but there is always something that makes them less than ideal. These were the closest to what I wanted, but there are pads on the bottom and no THT holes.
April 18, 2025 at 5:01 AM
I don’t know why there are so many of these. I’d been searching for ones like that but with the CC resistors (or at least the pins broken out!), but there is always something that makes them less than ideal. These were the closest to what I wanted, but there are pads on the bottom and no THT holes.
Looks like they might have a court date coming up in a couple of months!
April 13, 2025 at 3:19 AM
Looks like they might have a court date coming up in a couple of months!
Finally, an impulse purchase of the mki x es.EDU envelope generator by Erica Synths and Moritz Klein! I’ve needed an EG for a while, and this was it. Not just a kit to assemble, but an entire learning experience on synth design!
54-page crash course manual was easy to follow and I learned a ton.
54-page crash course manual was easy to follow and I learned a ton.
March 24, 2025 at 6:21 AM
Finally, an impulse purchase of the mki x es.EDU envelope generator by Erica Synths and Moritz Klein! I’ve needed an EG for a while, and this was it. Not just a kit to assemble, but an entire learning experience on synth design!
54-page crash course manual was easy to follow and I learned a ton.
54-page crash course manual was easy to follow and I learned a ton.
Next, Pet Rock by Jonah Senzel! I saw this on my first trip to synthCube months back, and thought it was cute, but was sold when I saw the “blue raspberry flavored” PCB on bsky. It’s “Wordle but for rhythms”; love the whimsy & poetry of it all. Plus Jonah’s made the music for some of my fave games!
March 24, 2025 at 6:21 AM
Next, Pet Rock by Jonah Senzel! I saw this on my first trip to synthCube months back, and thought it was cute, but was sold when I saw the “blue raspberry flavored” PCB on bsky. It’s “Wordle but for rhythms”; love the whimsy & poetry of it all. Plus Jonah’s made the music for some of my fave games!
First up, Castor and Pollux v2! I absolutely love the retro and spacey sounds that come out of this dual oscillator. It’s beautiful and wonderfully blinky on top of that, and the larger knobs on the v2 make it so much easier to tune. And as always, @thea.codes absolutely rocked the assembly guide! 🦦
March 24, 2025 at 6:21 AM
First up, Castor and Pollux v2! I absolutely love the retro and spacey sounds that come out of this dual oscillator. It’s beautiful and wonderfully blinky on top of that, and the larger knobs on the v2 make it so much easier to tune. And as always, @thea.codes absolutely rocked the assembly guide! 🦦
This weekend included some Eurorack synth and electronics soldering therapy! Took a trip to synthCube in Waltham to pick up a couple of module kits I had ordered online, and also put together the Castor & Pollux v2 I was able to snag from Winterbloom’s garage sale last month.
March 24, 2025 at 6:21 AM
This weekend included some Eurorack synth and electronics soldering therapy! Took a trip to synthCube in Waltham to pick up a couple of module kits I had ordered online, and also put together the Castor & Pollux v2 I was able to snag from Winterbloom’s garage sale last month.
My 3.3V LiPo + Power Path PCBs are in! Ridiculously tiny parts, making for a pretty tiny “module”. Tested most of it using the Flipper Zero IO pins because they were handy and so far so good! Still need to test the low voltage cut-off, but that’s about it!
March 6, 2025 at 5:50 AM
My 3.3V LiPo + Power Path PCBs are in! Ridiculously tiny parts, making for a pretty tiny “module”. Tested most of it using the Flipper Zero IO pins because they were handy and so far so good! Still need to test the low voltage cut-off, but that’s about it!
I had also fallen into this trap before, but I’ve been making a conscious effort to try to reduce netlist-ifying my schematics lately. I am pretty proud of my latest schematic!
March 2, 2025 at 4:28 PM
I had also fallen into this trap before, but I’ve been making a conscious effort to try to reduce netlist-ifying my schematics lately. I am pretty proud of my latest schematic!
Love getting PCB production/assembly files from JLCPCB! It starts to feel real from that point, and then I just gotta sit in anticipation while it gets made!
February 24, 2025 at 5:20 AM
Love getting PCB production/assembly files from JLCPCB! It starts to feel real from that point, and then I just gotta sit in anticipation while it gets made!
I am not the first person to “modularize” a circuit design, but I tried out this technique last year for a board design where I had three different “host” boards that were all mostly similar except visually, and a surface-mount solderable module that held the guts of the functionality.
February 23, 2025 at 3:53 AM
I am not the first person to “modularize” a circuit design, but I tried out this technique last year for a board design where I had three different “host” boards that were all mostly similar except visually, and a surface-mount solderable module that held the guts of the functionality.
So many of my PCB projects end up needing a LiPo, charging, 3v3 reg, and the circuitry for that. It’s a handful of really tiny parts and a good chunk of design each time, and that usually drives me to get the board assembled for me. So instead I made a module with all of that, and ordered in bulk!
February 23, 2025 at 3:53 AM
So many of my PCB projects end up needing a LiPo, charging, 3v3 reg, and the circuitry for that. It’s a handful of really tiny parts and a good chunk of design each time, and that usually drives me to get the board assembled for me. So instead I made a module with all of that, and ordered in bulk!
It looks great!! Do you have a lens there? I super-glued a glass cabochon on one of the GC9A01 LCDs as an experiment and it tore up the screen 😅
February 9, 2025 at 4:06 AM
It looks great!! Do you have a lens there? I super-glued a glass cabochon on one of the GC9A01 LCDs as an experiment and it tore up the screen 😅
That’s gonna be so cool, excited to see it! It’s been a while, but I think the GC9D01 was sliiightly different from the GC9A01, but I’ve got a CircuitPython driver in the Community Bundle for that one too 😉 Used it for one of these little rectangular screens
February 8, 2025 at 5:34 PM
That’s gonna be so cool, excited to see it! It’s been a while, but I think the GC9D01 was sliiightly different from the GC9A01, but I’ve got a CircuitPython driver in the Community Bundle for that one too 😉 Used it for one of these little rectangular screens
Oh! And for the feet, I used the same trapezoidal TPU rubbery “pads” I designed for the shower hooks, so I’m just printing a bunch to have on hand for the future…
February 3, 2025 at 2:12 AM
Oh! And for the feet, I used the same trapezoidal TPU rubbery “pads” I designed for the shower hooks, so I’m just printing a bunch to have on hand for the future…
Finally designed and 3D printed new “cheeks” for my DIU EuroRack modular synth case! Next time I’m down at Artisans Asylum, I’ll laser cut some acrylic or MDF to slot into the back to mount the bus board and PSU. Learning a bit more FreeCAD each time!
February 3, 2025 at 2:07 AM
Finally designed and 3D printed new “cheeks” for my DIU EuroRack modular synth case! Next time I’m down at Artisans Asylum, I’ll laser cut some acrylic or MDF to slot into the back to mount the bus board and PSU. Learning a bit more FreeCAD each time!
I think that board is supposed to be soldered up using either female + male pin headers, or just male pin headers (photo attached). If you want to be able to remove the ESP (and other modules), you can solder female headers on the board, and male headers on the ESP (and other modules).
February 1, 2025 at 12:04 AM
I think that board is supposed to be soldered up using either female + male pin headers, or just male pin headers (photo attached). If you want to be able to remove the ESP (and other modules), you can solder female headers on the board, and male headers on the ESP (and other modules).
I’ve only done a little, but I used the default generic TPU profile, and set all of the speeds I could find to 30mm (before I realized that profile already had a pretty low volumetric flow limit). Worked well for printing simple little gripper pads for some shower hooks I made!
January 26, 2025 at 2:42 PM
I’ve only done a little, but I used the default generic TPU profile, and set all of the speeds I could find to 30mm (before I realized that profile already had a pretty low volumetric flow limit). Worked well for printing simple little gripper pads for some shower hooks I made!
Hard to see the pads in the photos, but they make it nice and snug on the glass!
January 22, 2025 at 5:35 AM
Hard to see the pads in the photos, but they make it nice and snug on the glass!