How to Interfacing Relay Module with ESP32

How to Interfacing Relay Module with ESP32

In this Article, we learn about How to Interfacing Relay Module with ESP32.

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Interfacing a relay module with an ESP32 is a common task in IoT projects. A relay module is used to control high-power devices using a microcontroller like the ESP32.

CircuitDiagram:

Components Require:

1. ESP32 development board

2. Relay module

3. Jumper wires

4. Power supply (if needed)

Operating Principle:

When you run code on the ESP32 that sets the GPIO pin connected to the relay to HIGH, the relay receives a signal, and its internal switch closes the circuit, allowing current to flow to the high-power device. Conversely, setting the GPIO pin to LOW de-energizes the relay, opening the circuit and cutting off power to the high-power device.

This process enables the ESP32, through its GPIO pins, to effectively control high-power devices by using a relay module as an intermediary switch, making it safe to interface low-voltage microcontrollers with high-power electrical appliances.

Usages:

1. Home Automation

2. Security Systems

3. Industrial Automation

4. Energy Management

5. Remote Monitoring and Control

Video Tutorial

How to Interfacing Relay Module with ESP32