Skip to content

Latest commit

 

History

History
78 lines (58 loc) · 2.55 KB

2CHL_RELAY_MODULE.md

File metadata and controls

78 lines (58 loc) · 2.55 KB

2-Channel Relay Module

This document provides details on using the 2-Channel Relay Module in the Smart Remote for Controlling Electrical Appliances project.

📌 Overview

The 2-Channel Relay Module is used to control high-voltage appliances like lights and fans using low-voltage signals from an Arduino Uno or ESP8266. It acts as an electronic switch that allows the microcontroller to control AC or DC loads.

🛠 Requirements

🔹 Hardware:

  • 2-Channel Relay Module (5V)
  • Arduino Uno / ESP8266
  • Jumper Wires
  • AC/DC Load (Bulb, Fan, etc.)
  • External Power Supply (if required)

🔹 Software:

⚡ Wiring Connections

The Relay Module interfaces with Arduino Uno or ESP8266 as follows:

Relay Module Pins Arduino Uno / ESP8266 Pins
VCC 5V (Arduino) / 3.3V (ESP8266)
GND GND
IN1 D7
IN2 D8

📌 Note:

  • If using ESP8266, a transistor circuit or relay module with 3.3V logic support is recommended.
  • Ensure that AC loads are connected safely with proper insulation.

🚀 Example Code

This sample sketch controls two relays, turning them ON and OFF alternately every 5 seconds.

#define RELAY_1 7
#define RELAY_2 8

void setup() {
  pinMode(RELAY_1, OUTPUT);
  pinMode(RELAY_2, OUTPUT);
}

void loop() {
  digitalWrite(RELAY_1, HIGH);
  digitalWrite(RELAY_2, LOW);
  delay(5000);
  
  digitalWrite(RELAY_1, LOW);
  digitalWrite(RELAY_2, HIGH);
  delay(5000);
}

📜 Safety Precautions

  • Ensure proper insulation when dealing with high-voltage AC connections.
  • Do not exceed the rated current and voltage of the relay contacts.
  • If controlling high-power appliances, use a separate power source for safety.

📜 License

This project is open-source and available under the MIT License.

🙌 Credits

🚀 Safe and Smart Home Automation! 🎉