How to Use Relays with Arduino

How to Use Relays with Arduino

L
LeMaster Tech
Apr 22, 2025

A relay is one of the most important components to understand for hobbyists or professionals working with electronics! The ability to control circuits of one voltage from another completely electrically isolated circuit is super useful and important!

The 5 Volt relays I use in this video can be found here:
https://amzn.to/48y0bt8

And the larger board with 16 relays which I love to use for big projects with lots of devices is available here:https://amzn.to/4aMrqSq
(But this one does require you power it with 12 Volts which an arduino can't provide so you'd need a power supply (https://amzn.to/3voyzIF))

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