TTP223 Capacitor Type Single Channel Self Locking Touch Switch Sensor Module

Overview:
Type: Capacitive touch sensor module
Chip: TTP223 touch sensor IC
Operating Voltage: 2.0V to 5.5V DC
Output: Digital output (High when touched, Low when untouched)
Modes: Can be set to toggle or momentary mode
Sensitivity: Adjustable sensitivity for touch detection
Compact Size: Suitable for touch-sensitive interfaces and DIY electronics projects
Sample Code


int ledPin = 13;                // Connect LED on pin 13, or use the onboard one
int KEY = 2;                 // Connect Touch sensor on Digital Pin 2
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
     }
}