gistfile1.txt

#include <CapacitiveSensor.h>



CapacitiveSensor   cs_4_2 = CapacitiveSensor(A4, A2);        // 10M resistor between pins 4 & 2, pin 2 is sensor pin, add a wire and or foil if desired

int threshold;

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

void loop()                    
{

    long reading; 
    
    for(int i = 0; i < 4; i++) {
 
    reading =  reading =  cs_4_2.capacitiveSensor(30);
    delay(5);
    }

    reading = reading /4; 

    if(reading > THRESHOLD) {
      digitalWrite(LED_BUILTIN, HIGH);
      } else {
      digitalWrite(LED_BUILTIN, LOW);
        } 
      
      
    Serial.println(reading);
    delay(5);
}