In this video, I show you how to use a one-channel mini remote relay circuit, often sold under names like "DC 3.7V - 12V Mini Remote Relay 1 Channel." It’s a tiny but powerful wireless control module that uses a built-in relay to switch things on and off remotely.
I go over:
How it works and how to wire it up.
What that tiny relay can do for your project.
A real-world demo on a breadboard.
A translation of the nearly unusable instructions that come with it.
This little module is perfect for hobby electronics, remote control magic effects, or just wirelessly triggering anything from lights to motors. It's easy to use, super compact, and inexpensive.
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