If you need to add user input without using a button, then a capacitive touch interface might be the answer. The AT42QT1010 SparkFun Capacitive Touch Breakout offers a single capacitive touch button with easy-to-use digital I/O pins. The AT42QT1010 is a dedicated, single-button capacitive sense chip. The chip handles monitoring a conductive area for touch. As long as a touch (e.g. from a finger) is detected, the AT42QT1010 keeps the output line high. Otherwise, the line is kept low. You just need to provide a power source (1.8V - 5V) and ground for the AT42QT1010 to work. Additionally, a PAD pin is available if you would like to create your own external electrode. Documents: * Schematic * Eagle Files * Datasheet (AT42QT1010) * Hookup Guide * GitHub https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2014-01-17 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2016-03-16 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2016-04-01 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2016-04-05 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2016-11-24 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2016-11-28 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2016-11-29 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2016-12-09 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2016-12-13 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2017-03-31 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2017-04-04 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2017-11-10 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2017-11-13 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2017-11-24 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2017-11-28 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2018-05-05 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2018-05-11 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2018-05-15 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2018-10-30 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2018-11-21 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2018-11-27 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2019-03-15 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2019-03-19 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2019-07-04 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2019-07-09 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2019-11-29 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2019-12-03 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2021-02-10 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2022-02-21 https://elecena.pl/product/4568955/sparkfun-capacitive-touch-breakout-at42qt1010 2023-06-15