capsenseDemo.ino

#include <CapacitiveSensor.h>

// create an instance of the library. pin 2 is the sensor
CapacitiveSensor capsense = CapacitiveSensor(4, 2);

void setup() {
  // start serial
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  // store the sense value - argument is number of samples to take
  long val =  capsense.capacitiveSensor(30);

  // if the sensor val is greater than 30, turn the LED on
  if(val > 30){
    digitalWrite(LED_BUILTIN, HIGH);
  }else{ // otherwise turn it off
      digitalWrite(LED_BUILTIN, LOW); 
  }
  
  // print the info to the serial monitor
  Serial.print("capacitive sense value: ");
  Serial.println(val); // print sensor output

  delay(10); 
}

image.md