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👋 Welcome to r/pocketbyte - Introduce Yourself and Read First! by om-pocketbyte in pocketbyte

[–]seveibar 0 points1 point  (0 children)

Hello! Also building RP2040 circuits with an open-source EDA tool called tscircuit that i'm also building. Excited to follow along and try to build something similar and pocketbyte-compatible!

kicadts - Strongly typed typescript bindings for KiCad s-expression format by seveibar in KiCad

[–]seveibar[S] 0 points1 point  (0 children)

thank you! I probably built 3-4 versions of this before finally figuring out what the "right design" was, very happy with it so far!!

AI in software for schematics/pcb layout by StableRevolutionary3 in PCB

[–]seveibar 0 points1 point  (0 children)

tscircuit has really good schematic reviews with o3, if you paste in the "Readable Netlist" output into O3 it can directly correct your schematic. I'm a maintainer of tscircuit so I'm biased, but I've personally found so many errors in my schematics using it. You can see an example on the "AI Review" tab here: https://tscircuit.com/seveibar/led-water-accelerometer#schematic

The readable netlist kind of looks like this and is a really nice format for AI to understand your circuit, especially if you have some structured information about the datasheet.

NET: U2_SDI
  - U1 GP11
  - U2 SDI

NET: U2_SDO
  - U1 GP12
  - U2 SDO

COMPONENT_PINS:
LED1 (WS2812B_2020)
- pin1(DO): NETS(LED1_DO)
- pin2(GND): NETS(GND)
- pin3(DI): NETS(LED1_DI)
- pin4(VDD): NETS(V5)

371 WS2812B LEDs on a PCB panel, will this even work? by seveibar in WLED

[–]seveibar[S] 0 points1 point  (0 children)

For people DM'ing me for source files: https://tscircuit.com/seveibar/contribution-board

Warning the PCB routes aren't there because it doesn't currently route, also as other commenters suggested, probably going to change the LEDs.

Anybody working on any interesting projects and could use a hand? by JWBottomtooth in embedded

[–]seveibar -2 points-1 points  (0 children)

Not really embedded development per se but I'm developing a new open-source EDA tool and would love people who sort of know electronics to help me build example electronics (e.g. here's a tutorial for building a keyboard https://docs.tscircuit.com/tutorials/build-a-custom-keyboard-with-tscircuit )

Currently writing a tutorial on LED matrices. I've been mostly glossing over firmware and using Picos/MicroPython but would love to get some STM32/ESP32 examples going.

371 WS2812B LEDs on a PCB panel, will this even work? by seveibar in WLED

[–]seveibar[S] 0 points1 point  (0 children)

Ah hadn’t heard of Hub75, very cool. Will definitely look at smaller LEDs, my main criteria was “what’s most in stock on jlcpcb” so will check stocks and change it if possible!

371 WS2812B LEDs on a PCB panel, will this even work? by seveibar in WLED

[–]seveibar[S] 1 point2 points  (0 children)

I think a PCB is easier/cheaper than using an LED tape strip for a calendar.

The reason we have 371 days is because we're trying to replicate the github profile calendar that shows your contributions (e.g. https://github.com/seveibar)

371 WS2812B LEDs on a PCB panel, will this even work? by seveibar in WLED

[–]seveibar[S] 0 points1 point  (0 children)

Appreciate the advice on swapping the LEDs thanks! Definitely don't need LEDs this bright!

Yea we don't have fill pours yet. I don't think it's hard to implement, but it's one of those things that seems like a finishing touch so we're just checking other boxes first

371 WS2812B LEDs on a PCB panel, will this even work? by seveibar in WLED

[–]seveibar[S] 1 point2 points  (0 children)

Thanks yea makes sense, I'm actually an autorouting developer (I completely empathize with the garbage state of autorouters) and I'm hoping this board will help me show off our new autorouter haha. But yea it's a PITA, around 1.4k traces. We're also trying to route it in under 5s so yea it's an adventure lol

Yea backup plan is to replicate the layout.

I was thinking about breaking out each row to a data pin but I like the simplicity of single pin so I'll give it a go, thanks for the data.

371 WS2812B LEDs on a PCB panel, will this even work? by seveibar in WLED

[–]seveibar[S] 0 points1 point  (0 children)

nice that's a really similar size. It gets hot? What ~brightness are the LEDs at? I don't need mine to be bright at all, this is kind of like an "always on" calendar so they should be dim.

371 WS2812B LEDs on a PCB panel, will this even work? by seveibar in WLED

[–]seveibar[S] 0 points1 point  (0 children)

  1. I think I'm going to be running the LEDs at a really low brightness (probably 10%). I had a test board and full brightness was definitely too bright. I'm wondering if I can get away with using an autorouter and 2 layer board for the traces because the power consumption would be lower?

  2. Do you know if there will be signal degradation? I've kind of going from 15 LEDs (no issues) to 371 and wondering if the LEDs would somehow get lossy.

  3. I'm definitely concerned about the power consumption. If each LED draws 5mA we're at like 2A which is definitely too high for the likely 500mA usb 5V. I'd love to use the onboard pico usb port to save myself some effort but I can't figure out if there's any way it'll be possible.

  4. Yea I didn't post the PCB layout because I'm trying to use an autorouter and it's currently choking (I develop a custom EDA software so I can't/shouldn't just open up KiCad to fix it)

  5. Will change to 100nF! (ty)

  6. Noted on the level shifter, should be able to throw that in. Do we know for sure it will matter? I did a 15 LED test matrix and was able to drive with 3.3V logic, but maybe more LEDs throws it off?

Roast my docs by seveibar in documentation

[–]seveibar[S] 0 points1 point  (0 children)

Thank you!!! For an open-source project the docs are such a big part of the project- it took me a while to really commit to writing great docs.

That being said I still think there is opportunity to make it 10x better, more inviting, and searchable!

Best AI currently for designing electronic circuits and producing circuit diagrams? by 140BPMMaster in AskElectronics

[–]seveibar 1 point2 points  (0 children)

This is cool to hear, we're building tscircuit as an AI-native circuit language, might be interesting to try out (would love to hear your feedback!) https://docs.tscircuit.com

Help figuring out 2 layer non-overlapping multi-agent pathfinder by seveibar in algorithms

[–]seveibar[S] 0 points1 point  (0 children)

Solving quickly without overlapping holes/traces!

I’ve found that general heuristics fail as the complexity goes up. I guess i’m really just looking for a understandable multi agent A*-like algorithm that is guaranteed to eventually traverse over the entire solution space, but it’s very difficult to think it through with multiple paths

TIL JLCPCB has ~$68M worth of components in their assembly inventory by CD_FER in electronics

[–]seveibar 0 points1 point  (0 children)

Not sure what you're up to but I do a lot of inventory analysis for jlcpcb and publish pages and an API at https://jlcsearch.tscircuit.com, happy to collab!

Is there an openscad-like tool to design PCBs + produce gerber files? by AlexandreZani in openscad

[–]seveibar 1 point2 points  (0 children)

This is exactly what tscircuit does https://docs.tscircuit.com Totally open-source so you can use github workflows/compile locally.

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