Touch Sensor LED Control ✋

📌 Overview

This project is a Touch Sensor LED Control system that detects touch using an analog sensor and lights up LEDs accordingly. The sensor readings influence the LED states, creating a dynamic lighting response.

🔍 How It Works

• The analog sensor detects touch and provides varying analog values.
• LEDs light up sequentially based on touch count and sensor readings.
• Each touch increases the threshold for activation, adjusting the required analog value.
• When all LEDs are on, the system resets after the next touch.
• Serial monitor displays real-time analog values and touch count updates.

🎯 Applications

• Interactive lighting systems
• Touch-sensitive control interfaces
• Sensor-based input devices

📌 Future Improvements

• Fine-tune sensitivity for more precise touch detection.
• Implement a debounce mechanism to prevent accidental touches.
• Expand LED patterns for enhanced visual effects.

📢 Feel free to contribute or modify the project! 🛠️✨

🛠️ Components Used

• Arduino Board
• Analog Touch Sensor
• LEDs (x3)
• Resistors
• Jumper Wires
• Breadboard

📜 Code

#define led1 2
#define led2 3
#define led3 4
#define nolight1 300
#define nolight2 380
#define nolight3 450

int analog_value = 0;
int touch_count = 0;
bool touched = false;

void setup() {
  Serial.begin(9600);

  for (int i = led1; i <= led3; i++) {
    pinMode(i, OUTPUT);
    digitalWrite(i, LOW);
  }

  pinMode(A0, INPUT);
}

void loop() {
  analog_value = analogRead(A0);
  Serial.print("Analog value: ");
  Serial.println(analog_value);

  if (analog_value <= nolight1 && !touched && touch_count == 0) {
    touched = true;
    touch_count += 1;

    Serial.println("Touched 1 time");
    Serial.println(analog_value);
    digitalWrite(led1, HIGH);
    delay(200);
  } 
  else if (analog_value <= nolight2 && !touched && touch_count == 1) {
    touched = true;
    touch_count += 1;

    Serial.println("Touched 2 times");
    Serial.println(analog_value);
    digitalWrite(led2, HIGH);
    delay(200);
  } 
  else if (analog_value <= nolight3 && !touched && touch_count == 2) {
    touched = true;
    touch_count += 1;

    Serial.println("Touched 3 times");
    Serial.println(analog_value);
    digitalWrite(led3, HIGH);
    delay(200);
  } 
  else if (analog_value > nolight3) {
    touched = false; 
  }

  else if (analog_value <= nolight3 && !touched && touch_count == 3) {

    Serial.println("Resetting...");
    for (int i = led1; i <= led3; i++) {
      digitalWrite(i, 0);
    }
    touch_count = 0;
    delay(400);
  } 
}