You can’t have a touch sensitive switch without a way to detect the presence of a finger! A touch sensor, especially a capacitive touch sensor, has some surprisingly sophisticated electronics to ...

Capacitive sensing libraries for the Arduino and just about every other ... They created an Eagle library of touch widgets that includes everything from buttons, linear and radial sliders ...

The Trill I2C library targets Arduino and Bela ... each connected to a single capacitive sensor input. When you touch the bar, the firmware measures the capacitive change on adjacent traces ...