Turn your dummy usb numeric keypad into a fully hackable macropad.
- A Waveshare RP2040-Zero clone.
- An usb socket/cable
- An usb numeric keyboard
Because I needed to run some macros and I already have a dummy nice usb keypad. For 5$ and some soldering I now have a macropad :)
The Pico is configured as a dual role usb host/device. It receives hid reports from the host port (gp0[d+] & gp1[d-]) and emits hid reports based on the current layer.
There's a numeric mode that reports key events as they arrived, with the exception of Bloq num, which is used to switch between layers.
- This is sample code. I'm sharing it here because I didn't find related projects online.
- This project has a few layers as an example. Please look at them and adapt them to your needs. But please do not submit PRs or open tickets for specific layers.
- I'm mostly done with this project :). It does exactly what I need and I already run it in production. Do not expect many changes. Patches are welcome as long as they fit the scope of the project: sample code to turn a dummy keypad into a macropad.
In CMakeLists.txt:
USE_RGB_LED: drives a rgb led on gpio16.
USE_CDC_DEVICE: enables a composite CDC/HID device instead of a single HID device.
Allows to reboot the rp-2040 board to program mode by typing dfu on the serial interface (i.e: echo "dfu" > /dev/ttyACM0 on Linux)
USE_EXTRA_KEYS_EPOMAKER_TH21: Bloq Num toggles between numeric mode and last macro layer. Tab and Backspace are used while in macro mode to switch to previous/next layer.
- @hathach for TinyUSB project
- @sekigon-gonnoc for Pico-PIO-USB
- The Pi foundation for such an awesome microcontroller and related documentation :)