Kumi
87a8eb98e3
Introduced an Arduino sketch utilizing the BleKeyboard library, enabling keypress transmission from an ESP32 via BLE upon footswitch activation. Configured GPIO 25 for connection and assumed a normally open footswitch design. This setup facilitates toggling microphone status using a predefined key in KDE Plasma, enhancing user control. The inclusion of README.md provides setup context and operational guidance. |
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| footswitch.ino | ||
| README.md | ||
ESP32 BLE Footswitch
This is a really simple Arduino IDE sketch that uses the BleKeyboard library to send a keypress from an ESP32 to your PC via Bluetooth Low Energy when a footswitch is activated.
The footswitch is connected to ground and GPIO 25 on the ESP32, because that was the most convenient option for me, using a D1 Mini from AZ-Delivery and 5mm 2-pin screw terminals.
I used a generic footswitch that I had lying around, those are available at your favorite electronics store or online for a few euros. The sketch assumes that the footswitch is normally open and closes the circuit when pressed. If you have a normally closed footswitch, you can just update the sketch accordingly.
The sketch sends the "Bookmarks" media key both when it is pressed and when it is released. I chose that key because it was unused on my system and others (like F18) didn't seem to work for some reason. I then added a shortcut in KDE Plasma to trigger the action I wanted when that keypress is received, which was to toggle the microphone on and off. This way, I can have my microphone muted by default and only enable it temporarily while I'm speaking.