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| name | interface | chipset | notes |
| SpiffChorder | USB | atmega 8 then 16 | Sold chorder in daily use |
|---|---|---|---|
| Bluetooth chorder | BT | Arduino | Experimental Bluetooth chorder, never left beta |
| FeatherChorder | BLE | Adafruit bluefruit feather 32ua | 2016 - |
| FeatherChorder | USB | Adafruit ESP32 or RP2040, also KB2040 | 2025- |
| Wiry Chorder | USB and/or BLE | Seeedstudio XIAO nRF52840 | 2025- still in beta, works solidly, but has a Bluetooth issue every few days that seems to be “solved”1) by forgetting the device and re-pairing it on the host. If you are interested in testing this version please write me. |