The Re-gret is a 34 key remix of my Egret keyboard.
Featuring: 34 keys, Choc spacing, Choc v1 hot swappable, Seeed Xiao MCU, wireless compatible, RGB undeglow when plugged in, and a silicone gasket sandwich stackup.
Compared to the original Egret, besides having two thumb buttons per side, the Re-gret has a more angle between the halves, and the ring and pinky fingers have more stagger and more splay. It also has a Xiao MCU which is cheaper and cuter than a Nice Nano. Certainly a more re-fined re-mix that I have no re-grets about making.
Check the docs for a PCB Build Guide and Case Build Guide.
I powered the RGB underglow directly from the USB 5v, so it will automagically turn itself off when in wireless bluetooth mode. There's no need for ZMK's External Power Control because you physically can't run the LEDs from battery power even if you wanted to. There's a clever trick using a diode that allows the 5v LEDs to be controlled by the Xiao's 3.3v logic.
Copy the contents of firmware/zmk/config/boards/shields/regret/ into [your-zmk-config]/config/boards/shields/regret/
Be advised that right now the underglow only works on the XIAO nRF52840 board, and does not work on the XIAO RP2040 (although it might in the future). The original XIAO SAMD21 should work but I haven't tested it.
| Board | Chip | USB Wired | Bluetooth Wireless | RGB Underglow | Comments |
|---|---|---|---|---|---|
| XIAO | SAMD21 | ✅ | ❌ | ❌ | Should work but untested |
| XIAO BLE | nRF52840 | ✅ | ✅ | ✅ | |
| XIAO RP2040 | RP2040 | ✅ | ❌ | ❌ for now | Underglow maybe someday |
Copy the contents of firmware/qmk/keyboards/re_gret into [your_qmk_firmware]/keyboards/re_gret, since I have not put the Re-gret firmware into the official QMK repo.
Only the XIAO RP2040 is supported. The Adafruit QT Py RP2040 might possibly work but I don't think the reset button will function.
| Board | Chip | USB Wired | RGB Underglow | Comments |
|---|---|---|---|---|
| XIAO RP2040 | RP2040 | ✅ | ✅ |