ESP8266 External LED Project

This project demonstrates how to control an External LED using an ESP8266 microcontroller. The External LED is programmed to turn on and off at intervals, showcasing basic digital output control with the ESP8266.

Components Needed

Circuit Diagram

Circuit Setup

1. Connecting External LED to ESP8266:

Connect the cathode (short leg) of the External LED to GPIO pin D1 (or any GPIO pin of your choice).

Connect the anode (long leg) of the External LED to a current-limiting resistor (if required) and then to ground.

Instructions

1. Code Upload:

Open the Arduino IDE with ESP8266 board support installed.

Create a new sketch and paste the provided Arduino code.

Connect the ESP8266 to your computer, select the appropriate board and port from the Tools menu.

Upload the code to the ESP8266.

2. Testing:

After uploading the code, observe the External LED connected to pin D1.

The External LED should turn on for 1 second and then turn off for 1 second repeatedly.

Applications

This simple LED control project can be applied in various use cases such as:

- Indicator lights for system status or device activity

- Learning platform for GPIO pin control in embedded systems

Notes

- Always use a resistor in series with the LED to prevent excessive current draw.

- Make sure to connect the ground (GND) of the ESP8266 and the external circuit together.

- You can experiment with different GPIO pins or blinking intervals by modifying the code.