Adafruit standalone capacitive touch sensor breakout momentary or toggle adafruit 1374 the adafruit standalone momentary capacitive touch sensor breakout boards operate without the need for a microcontroller using an at42qt1010 sensor chip when a touch is sensed an on board led lights and the output pin goes high logic 1 it goes low logic 0 again when the touch is removed you can save power by isolating the led by cutting a trace on the board its ok the trace was specifically place