ESP32 LED Blinking

Blinking an LED with the ESP32 involves connecting an LED to a GPIO pin through a current-limiting resistor. By programming the ESP32 using the Arduino IDE, the LED can be controlled to turn on and off at specified intervals. This basic project showcases fundamental GPIO handling and serves as a starting point for more advanced IoT applications and sensor integrations.

Components Needed

• ESP32 development board (e.g., ESP-WROOM-32)
• LED (any color)
• Resistor (typically 220 ohms)
• Breadboard (if necessary)
• Jumper wires

Circuit Setup:

Connect the LED:

Connect the longer leg (anode) of the LED to a current-limiting resistor (220 ohms).

Connect the other end of the resistor to GPIO pin 2 (you can choose any GPIO pin, adjust the code accordingly).

Connect the shorter leg (cathode) of the LED to the ground (GND) pin of the ESP32.

Verify Connections:

Double-check that all connections are secure and correct to avoid damaging the components.

Sample Code (Arduino IDE):

instructions:

Upload the Code:

Connect your ESP32 board to your computer via USB.

Open the Arduino IDE and paste the above code into a new sketch.

Select the correct board and COM port under

Click the upload button (right arrow icon) to compile and upload the code to the ESP32.

Observing the LED:

After uploading, the LED connected to GPIO 2 should start blinking: on for 1 second, then off for 1 second, repeatedly.

notes:

This simple project serves as a foundational example for controlling peripherals using the ESP32 and can be expanded upon for more complex applications involving sensors, actuators, and networking functionalities.