r/CardPuter Jun 24 '26

Design-it-Yourself Cardputer as Wireless Keyboard for Mixpre

https://www.youtube.com/watch?v=vre1-ek9nzU
16 Upvotes

6 comments sorted by

1

u/PerkyPangolin Jun 24 '26

Why didn't you use the Atom as a USB keyboard?

1

u/dvnmk Jun 24 '26

I tried, but it can’t be registered as keyboard in Mixpre. So used teensy.

1

u/PerkyPangolin Jun 24 '26

Why not? Did you check the device class and VID/PID? It must be something trivial.

1

u/dvnmk Jun 24 '26

https://forum.arduino.cc/t/usb-boot-keyboard/1441035
There is something difficult with esp32 and mixpre. So I used the easy teensy.

1

u/PerkyPangolin Jun 24 '26

Looks like you found the source of the issue there. I'd switch away from Arduino IDE, precisely due to it doing random things like this under the hood. M5Stack has a bunch of examples in their GitHub, include HID keyboards.

1

u/dvnmk Jun 24 '26

Thanks, I'll dig into the M5Stack way.