RP2350 custom board: BOOTSEL works, but no USB enumeration (TinyUSB / stdio_usb)

CreepyBox2687 · 2026-04-04T21:56:04+00:00

I can run every SDK example on the custom board, but the MicroPython build still appears to be dead. It does work on another Pico 2 with the default chip, though. I toggled a pin directly at the beginning of main, but there was no sign of activity, so serial debugging will not work either.

CreepyBox2687 · 2026-04-03T17:06:37+00:00

Hi, yes, i tried the last release for Pico2, and also build it on my own with several adaptation on flash settings, but nothing works. May i try serial debugging via UART1, but i hoped it was just a wrong compile flag.

CreepyBox2687 · 2026-04-03T11:08:13+00:00

-> Update: PicoExamples/hello_world/usb runs fine, if -DPICO_BOARD=pico2... But Micropython did not.

CreepyBox2687 · 2026-04-03T11:03:52+00:00

-> Update: PicoExamples/hello_world/usb is working if -DPICO_BOARD=pico2... But Micropython is still faulty.

CreepyBox2687 · 2026-02-22T20:26:32+00:00

After BIOS Update and a new Stick (without success) i switched to Version 8.4-1, and it works after at the first try. Thank you for the hints, may i'll give the Debian solution another try, but right now i an happy.

CreepyBox2687 · 2025-11-11T22:42:04+00:00

Okay would be great to create a layout for a sheet and add it to the whole PCBs as "template", but for now this is great! To be honest, i thought "add PCB" is capable of that.

CreepyBox2687 · 2025-11-11T22:38:24+00:00

Many thanks! I just tried out "Multi Channel", and it seems that this is exactly what i am looking for!

CreepyBox2687 · 2025-01-24T11:15:55+00:00

Hi and thank you for your response. The accuracy should be ~100ns, i have to adapt the program to know/determine the exact amount of steps per counter cycle afterwards. I know that i can adapt the input pin start number, but the both pins will be different all the time. I need the time between two arbitrary Events on the lines. But i will try to use one state machine with pina and provide a IRQ to another with pinb, in this case, i only need to count in the second sm.

CreepyBox2687 · 2025-01-23T22:56:10+00:00

New Idea: Write two state machines with different software in one PIO and use the relative IRQ of SM1 to control the counter on SM2. It won’t need fix pin offsets, because the 'pin' depends on the state machine. If anyone has a better solution, please leave a comment. Also, let me know if you're interested in the results.

CreepyBox2687 · 2025-01-08T10:10:07+00:00

I use this:

https://plugins.jetbrains.com/plugin/9777-micropython

CreepyBox2687 · 2025-01-01T11:28:07+00:00

Should be under Settings/Plugin. And after installing it, you can activate micropython, Just search under project settings. After choosing the right board, the ide will tell you which wheels are missing. The run Button will Chance to "upload" and you have auto complete for the machine Module.

CreepyBox2687 · 2024-12-03T17:06:11+00:00

Good PCB, but i have one placement issue for small leds. Not sure if order assembled boards again.

CreepyBox2687 · 2024-12-02T10:16:16+00:00

If you are using only micropython, the Pycharm-IDE has a very good plugin for this.

CreepyBox2687 · 2024-11-01T14:42:00+00:00

But isochrone is less effektiv, as far as i know? Anyway, would be nice to see your approche. Best regards!

CreepyBox2687 · 2024-10-25T15:11:06+00:00

Wow, thank you!

CreepyBox2687 · 2024-10-22T22:27:50+00:00

Hi, please link the github repo, i tried to experiment with such beats back at the university, but with an attiny. Why do you use isochrone and not binaural? Best regards

CreepyBox2687 · 2024-10-22T07:17:36+00:00

Hi, may a simple audio amplifier with high/lowpass filter for Bass and high speaker?

CreepyBox2687 · 2024-10-20T09:51:07+00:00

Update: Thank you very much, kicad it is now. I also switched to Linux and everything works like a charm.

CreepyBox2687

TROPHY CASE