//This is a super simple Touchsensor based on the example from the CapacitiveSensor library
//I made minor motifications to the original sketch to include an output LED

#include <CapacitiveSensor.h>

/*
* CapitiveSense Library Demo Sketch
* Paul Badger 2008
* Uses a high value resistor e.g. 10M between send pin and receive pin
* Resistor effects sensitivity, experiment with values, 50K – 50M. Larger resistor values yield larger sensor values.
* Receive pin is the sensor pin – try different amounts of foil/metal on this pin
*/

int led =7; //onboard led des Adafruit Flora Boards
CapacitiveSensor cs_6_12 = CapacitiveSensor(6,12);// 10M resistor between pins 6 & 12
//pin 6 is sensor pin, add a wire and or foil if desired

void setup()
{
cs_6_12.set_CS_AutocaL_Millis(0xFFFFFFFF); // turn off autocalibrate on channel 1 – just as an example
Serial.begin(9600);//Turn on monitor to check the values
pinMode(led, OUTPUT); //define the led as an output
}

void loop()
{
long start = millis();
long total1 = cs_6_12.capacitiveSensor(30);

//Serial.print(millis() – start); // check on performance in milliseconds
Serial.print(„\t“); // tab character for debug windown spacing
Serial.print(total1); // print sensor output 1
Serial.print(„\t“);

if (total1>20) //define threshold, you might have to adjust this depending on your resistor values, but also weather conditions and the touch sensor
{digitalWrite(led, HIGH);
delay(100); }
digitalWrite(led, LOW);
delay (5); // arbitrary delay to limit data to serial port
}