Hackster

Relay Module interfacing with Arduino – Arduino Relay Module

In this article, we are going to control an Arduino relay module. We will control two different devices using it. First, we will control a simple LED then we will control a light bulb using it. The ...
Hackster

How to use 5V 4-Channel Relay Module with Arduino

In this project you will learn how to control a motor and RGB LED with a HL-52S relay module using Arduino Uno. This is where a relay becomes extremely useful. A relay module acts like a switch that ...
GitHub

RelayModule Library for Arduino

O. What is RelayModule Library? If I use it, how easier life will be ? If you have made some Arduino project with Relay Modules, you probably wrote some scattered code for relays. Scattered Code ...
note

How to stably control a relay module with Jetson Orin Nano: Solving stumbling blocks with GPIO + transistor + external power supply

The relay module used this time is LOW trigger (relay ON when control signal is 0V, relay OFF when 5V (3.5V or higher)). Many relay modules are designed this way. The power supply for the above ...
GitHub

This project uses GSM Module (SIM900) with Arduino to switch Relay state by SMS OR CALL.

Download "sms_call_gate.ino" Sketch from the repository and Upload it to Arduino. NOTE : Make sure to replace your number in code at line number 71. The number must be in international format. After ...