ESP32 has a lot of capabilities, and one of them is touch sensing.

Pinout Diagram

As per the ESP32 Pinout diagram, we can see there are touch sensitive pins named as Touch0, Touch2, Touch3, Touch4, Touch5, Touch6, Touch7, Touch8, and Touch9.

We can use any of those pins for this project, and we will be using Touch0, which is marked as D4 on this pinout diagram as well as on my ESP32 machine.

Demo

Below is the demo video to showcase what we will be doing in this article.

code

int ledPin = 2; // in-built LED

void setup() {
  pinMode(ledPin, OUTPUT);
}

void loop() {
  int touchReadings = touchRead(T0);

  if (touchReadings < 20) {
    // touched
    digitalWrite(ledPin, HIGH);
  }
  else {
    // not touched
    digitalWrite(ledPin, LOW);
  }

  delay(20);
}

That's all, pretty easy, isn't it?

Thank you for reading, see you in the next one.