Usagi Electric | Reverse Engineering a Knight Photo-Electric Relay System @UsagiElectric | Uploaded March 2022 | Updated October 2024, 15 hours ago.
We’re taking a short detour today to take a look at a really interesting little device I picked up on my last trip to Computer Reset. The Knight Photo-Electric Relay System is a simple little device that lets you turn a full mains powered system on or off depending on whether the beam of light being shone into the lens is interrupted or not. Inside there’s an interesting little PCB with some clever design on the relay to get some cool functionality with a bare minimum of parts!

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Intro Music adapted from:
Artist: The Runaway Five
Title: The Shinra Shuffle
ocremix.org/remix/OCR01847

Thanks for watching!

Chapters
0:00 How do we start this video?
2:18 What is this thing?
3:18 But what does it do?
6:09 Ok, how does it do that?
7:26 Do you have the schematic?
14:33 Nice, but it’s lunch time, can you wrap it up?
15:08 What if I only clicked for the bunny?