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/*
Arduino Starter Kit example
Project 13 - Touch Sensor Lamp
This sketch is written to accompany Project 13 in the
Arduino Starter Kit
Parts required:
1 Megohm resistor
metal foil or copper mesh
220 ohm resistor
LED
Software required :
CapacitiveSensor library by Paul Badger
http://arduino.cc/playground/Main/CapacitiveSensor
Created 18 September 2012
by Scott Fitzgerald
http://arduino.cc/starterKit
This example code is part of the public domain
*/
// import the library (must be located in the
// Arduino/libraries directory)
#include <CapacitiveSensor.h>
// create an instance of the library
// pin 4 sends electrical energy
// pin 2 senses senses a change
CapacitiveSensor capSensor = CapacitiveSensor(4,2);
// threshold for turning the lamp on
int threshold = 1000;
// pin the LED is connected to
const int ledPin = 12;
void setup() {
// open a serial connection
Serial.begin(9600);
// set the LED pin as an output
pinMode(ledPin, OUTPUT);
}
void loop() {
// store the value reported by the sensor in a variable
long sensorValue = capSensor.capacitiveSensor(30);
// print out the sensor value
Serial.println(sensorValue);
// if the value is greater than the threshold
if(sensorValue > threshold) {
// turn the LED on
digitalWrite(ledPin, HIGH);
}
// if it's lower than the threshold
else {
// turn the LED off
digitalWrite(ledPin, LOW);
}
delay(10);
}
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