GitHub

This Arduino relay control system activates three relays via pushbuttons, automatically deactivating them after 5 minutes.

It detects potential welded conditions and provides status updates through the serial monitor. Ideal for learning about relay management and timing functions, this project is built using Tinkercad for ...
EDN

Control a Relay with Arduino – Tutorial #5

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...
EDN

Arduino Temperature Controlled Relay Circuit (DIY)

In this project, we are going to build something very simple project, a temperature controlled relay that is used to turn on a dc fan. You can actually change the DC Fan to other electrical devices ...
GitHub

A complete IoT solution for controlling an 8-channel relay module using an Arduino Uno, integrated with a Telegram bot for remote control.

Normal: Manual control of each relay All ON: Activate all relays All OFF: Deactivate all relays Alternating: Alternate between odd and even relays Sequential: Activate one relay at a time in sequence ...
elektormagazine

Smartphone-Controlled Arduino Projects: Use Bluetooth and Wi-Fi for Wireless Communication

Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi with an ESP8266 ESP-01 module. With ...
Geekzone

Raspberry Pi (or Arduino) relay control

To drive a relay from the Pi, one needs to cobble up a fairly simple circuit where the 3.3V GPIO pin turns on a transistor that drives the relay. This is such a common requirement that I figured ...