If you are using the TTP223 then it is an open-drain output. You need to turn the pull-up on for the input to the Pi.
In addition, if your sensor is connected to GPIO25 and GPIO25 is also connected to GND then your sensor literally won't work.
In addition, if your sensor is connected to GPIO25 and GPIO25 is also connected to GND then your sensor literally won't work.
Statistics: Posted by ame — Tue Feb 24, 2026 2:21 am