ESP32 Touch Controlled LED Using Arduino IDE

This tutorial uses built-in touch sensors on the ESP32 Dev Module to control an LED.

There are multiple ways to program the ESP32. We will be using the Arduino library. You can download it from the following link:

https://github.com/espressif/arduino-esp32

Clone or extract the libraries in your C:\Users\Documents\Arduino folder.If you do not have Arduino IDE installed already, here is the link to that:

https://www.arduino.cc/en/Main/Software

After completing the previous step, start the IDE and go to Tools>Board menu. Then select ESP32 Dev Module. The default settings should be good for flash speed, upload speed etc. Select the COM port which is connected to the ESP32.

Next, connect pin GPIO4 (T0) to a wire, this will be the touch sensor input. Connect pin GPIO18 to the + rail of the breadboard and pin GND to - rail of the breadboard. Place a LED with the long wire in the + rail and short wire in the - rail on the breadboard.

Download the code from the following link:

https://github.com/Serpent999/ESP32_Touch_LED

Compile and Upload the code to the ESP32. The LED would change intensity according to your touch.

Note: When uploading you may sometimes encounter errors. Press and hold the boot button on the board, while uploading to resolve the error.