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Arduino Capacitive Touch Sensor

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  • Arduino Capacitive Touch Sensor
2.00 Grams
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 Product Description

This is the Arduino Capacitive Touch Sensor. The secret of this sensor lies the touch-sensing TTP223B IC. In it's normal state, the Arduino touch sensor's output is low. When a finger or metal object touches the corresponding position, the sensor's output is high. In addition to this, the detection works even when separated by plastic, glass or other materials. The built in circuit switchs to low-power mode if not touched for 12 seconds. Paired with the starter Arduino Capacitive Touch Sensor Code provided below, you will be well on you way to developing cool new hidden touch detection projects that will have everyone asking you "How did you do that?" The sensor come fully assembled with 3 pins for easy hook up (GND, VCC, SIG), GND to ground, VCC is to the 3-5V power supply, and SIG the digital output signal to Arduino pin 3. The board also features four M2 (2.2mm) Screw mounting holes and operates at 3 to 5V with a built in indicator LED.

Arduino Capacitive Touch Sensor Code

//Arduino Capacitive Touch Sensor Code
Connect SIG To Arduino Digital Pin 3 : VCC To Arduino 5V Pin : GND To Arduino Ground www.ResistorPark.com // int ledPin = 13; // Connect LED on pin 13, or use the onboard one int KEY = 3; // Connect Touch sensor on Digital Pin 3   void setup() {   pinMode(ledPin, OUTPUT); // Set ledPin to output mode   pinMode(KEY, INPUT); //Set touch sensor pin to input mode } void loop() {    if(digitalRead(KEY)==HIGH) //Read Touch sensor signal        {          digitalWrite(ledPin, HIGH); // if Touch sensor is HIGH, then turn on      }    else      {         digitalWrite(ledPin, LOW); // if Touch sensor is LOW, then turn off the led      } }

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