#include #include #define switchElectrode 11 #define outputPin 13 void setup(){ pinMode(outputPin, OUTPUT); digitalWrite(outputPin, LOW); Wire.begin(); MPR121.begin(0x5C); MPR121.setInterruptPin(4); MPR121.updateTouchData(); } void loop(){ if(MPR121.touchStatusChanged()){ MPR121.updateTouchData(); if(MPR121.isNewTouch(switchElectrode)){ digitalWrite(outputPin, !digitalRead(outputPin)); } } }