Configure a Raspberry Pi as a USB Device

• il-magic-scanner

  1 1 1.4 Python

  Writeup of the build of a prototype phone scanner

  

Going to toot my own horn a little bit here. I used this capability on this work project: https://github.com/nhsx/il-magic-scanner (long story short: use a pi camera to read ID info off a phone screen, then pretend to be a keyboard and "type" it into an attached computer). There's a spun-off standalone daemon at https://github.com/nhsx/il-keebd which handles the "pretend to be a keyboard" bit. It listens on a local socket for text, converts it to scancodes, and squirts them up to the usb host.

The keymap isn't complete by any means, but it's got enough there to be interesting.

• il-keebd

  1 1 10.0 Python

  USB-OTG keyboard daemon for raspberry pi

  

Going to toot my own horn a little bit here. I used this capability on this work project: https://github.com/nhsx/il-magic-scanner (long story short: use a pi camera to read ID info off a phone screen, then pretend to be a keyboard and "type" it into an attached computer). There's a spun-off standalone daemon at https://github.com/nhsx/il-keebd which handles the "pretend to be a keyboard" bit. It listens on a local socket for text, converts it to scancodes, and squirts them up to the usb host.

The keymap isn't complete by any means, but it's got enough there to be interesting.

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• voicetunes

  3 9 0.0 TypeScript

  Offline voice-controlled music player for Raspberry Pi

Here’s the solution I built for that, with a combination of on-device voice control, and a Bluetooth remote: https://github.com/lukifer/voicetunes

Something I’d still like to add is a USB OTG emulation of iOS/Android/iPod/etc, so that the currently playing track shows on the dash, steering wheel controls can be used, etc, but my last experimentation a couple years ago didn’t go anywhere. (All the open source stuff for emulating CarPlay and Android Auto seem to be for the other direction: the dash, not the device.)

• composite-joystick

  1 16 10.0 Rust

  Use a Raspberry Pi in gadget mode to combine several josyticks into one

I've done this, it's super useful. The use case for me was that I wanted to simultaneously use two joysticks with the same game, mixing their inputs together instead of just using one or the other for each axis. The behavior only ended up being possible by writing a "joystick mux" program that would accept input from multiple joysticks and then retransmit it as a gadget-mode device.

Side note, USB HID descriptors are a disaster and someone should do something about it. Even commercial devices by reputable manufacturers have broken descriptors. A tool with modern ergo and integration would probably get a surprising amount of traction.

https://github.com/saulrh/composite-joystick

• ipod-gadget

  5 184 0.0 C

  iPod usb gadget for audio playback. Client app: https://github.com/oandrew/ipod

Check this out: https://github.com/oandrew/ipod-gadget

It's a USB gadget kernel module that pretends to be an iPod to stream music to car/etc.

• arduino-esp32

  228 12,553 9.6 C++

  Arduino core for the ESP32

  

I would also take a look at esp32 and possibly raspberry pi pico W as well.

For the esp32 there is this official example of what I think is faking a usb drive: https://github.com/espressif/arduino-esp32/blob/master/libra...

Not all ESP32s support USB OTG and I don’t have the correct one here atm to test with. Not sure how much more work would be needed to serve files from sd card.

You could then use a web server on the esp32 to transfer your files

• teslausb

  125 1,766 8.9 Shell

  A smart USB drive for Tesla Dashcam - extended storage, auto archive, web viewer

I use this for my Teslas Dashcam (it was built for it), but it also has a feature to rsync music files from a network share every time it connects to the network. Sounds like it would cover what you want, and it supports RPI Zero Ws natively.

https://github.com/marcone/teslausb

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