1 RASPBERRY PI – All About controlling Relay Boards for Home Automation
Recommended for explaining how to wire common relay modules properly, especially removing the JD-VCC jumper and powering the coil side separately from a low-voltage board.
Topic
relay modules
8 videos. Ranked by independent recommendations, not by views.
2 Control High Voltage Devices – Arduino Relay Tutorial
How To Mechatronics explains how to control a relay module from an Arduino, offered to people switching mains loads, though one commenter later preferred another resource.
3 Connecting a Relay Module to a Microcontroller
Offered as a clear explanation of how common relay modules work and how to power and isolate them from a microcontroller.
4 Use Arduino to Switch Power On and Off!
A beginner relay tutorial showing an Arduino switching power to a load, though one commenter questions driving the relay straight from a pin.
5 120/240V to logic level optoisolator (with schematic)
Big Clive's in-depth look at a single-channel optoisolator module, suggested for switching a mains load such as a pump and for learning how these boards work.
6 How to use 5V Relay with Arduino to turn ON and OFF AC bulb or DC load
Offered as a tutorial for switching a light bulb with a relay from an Arduino, suited to people moving on from practising with LEDs.
7 Raspberry Pi: 8 Channel Relay + External Power Supply Tutorial and Example
Used by newcomers as a guide to wiring a relay board to a Raspberry Pi with its own separate 5 V supply, such as a recycled phone charger.
8 5 Volt Relay (Raspberry Pi)
Often recommended as a basic and thorough walkthrough of wiring and driving a relay module from Raspberry Pi GPIO pins.
