Touch sensor TTP223B

/*
 * ==================================================================
 *  Generated by Codey.online  —  https://www.codey.online
 * ==================================================================
 *  Project   : TTP223B Capacitive Touch Sensor Demo
 *  Board     : Arduino UNO (arduino:avr:uno)
 *  Parts     : Touch sensor TTP223B
 *  Libraries : none (built-in)
 *
 *  Codey Online is an AI-powered browser IDE for Arduino and ESP32.
 *  Describe your project and Codey writes the code, draws the wiring
 *  diagram and uploads it to your board, straight from the browser.
 *  This code is free to use, modify and share, without warranty.
 * ==================================================================
 */

// Pin definitions
const int touchPin = 2;
const int ledPin = 13;

int lastState = LOW;

void setup() {
  pinMode(touchPin, INPUT);
  pinMode(ledPin, OUTPUT);

  Serial.begin(115200);
  Serial.println(F("TTP223B Touch Sensor Initialized"));
}

void loop() {
  int touchState = digitalRead(touchPin);

  // Control onboard LED based on touch input
  digitalWrite(ledPin, touchState);

  // Print message on state change
  if (touchState != lastState) {
    if (touchState == HIGH) {
      Serial.println(F("Touch detected!"));
    } else {
      Serial.println(F("Touch released."));
    }
    lastState = touchState;
  }

  delay(20);
}

/*
 * ==================================================================
 *  Generated by Codey.online  —  https://www.codey.online
 * ==================================================================
 *  Project   : ESP32 TTP223 Capacitive Touch Sensor Demo
 *  Board     : ESP32 DEVKIT V1 (esp32:esp32:esp32doit-devkit-v1)
 *  Parts     : Touch sensor TTP223B
 *  Libraries : none (built-in)
 *
 *  Codey Online is an AI-powered browser IDE for Arduino and ESP32.
 *  Describe your project and Codey writes the code, draws the wiring
 *  diagram and uploads it to your board, straight from the browser.
 *  This code is free to use, modify and share, without warranty.
 * ==================================================================
 */

const int TOUCH_PIN = 4;   // D4 on ESP32 DevKit V1
const int LED_PIN   = 2;   // Onboard LED on ESP32 DevKit V1

int lastState = LOW;

void setup() {
  Serial.begin(115200);
  pinMode(TOUCH_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, LOW);
  Serial.println("TTP223 Touch Sensor Initialized.");
}

void loop() {
  int touchState = digitalRead(TOUCH_PIN);

  if (touchState != lastState) {
    if (touchState == HIGH) {
      digitalWrite(LED_PIN, HIGH);
      Serial.println("Touch detected!");
    } else {
      digitalWrite(LED_PIN, LOW);
      Serial.println("Touch released.");
    }
    lastState = touchState;
    delay(50); // Simple debounce delay
  }
}