this post was submitted on 31 Oct 2025
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How to switch a 5V led lamp? (piefed.ca)
submitted 6 months ago by GreatBlueHeron@piefed.ca to c/homeassistant@lemmy.world
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I've got a cheap salt lamp with a LED inside and it runs on a 5V wall wart. I think it originally had a USB plug but I cut that off and connected it to an old 5V power supply.

I've never used esp32, but I've been doing some reading and it seems like an esp32-c6 will allow me to do this with ZigBee.

Does this sound reasonable? Are there other options I should consider?

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[โ€“] Grimy@lemmy.world 1 points 6 months ago (1 children)

Look into the Shelly relays. You can put them inline I'm pretty sure if you don't want them in the socket.

[โ€“] GreatBlueHeron@piefed.ca 1 points 6 months ago

I'm aware of Shelly and similar products. they are way overkill for this lamp - it's literally 1 LED and was powered from USB before I modified it to run from a 5V wall wart. I've ordered a few ESP32 boards to play with. I'm pretty confident I can power my lamp from one because one of the tutorials I found for new users was literally making a light switch. The tutorial used a LED for proof of concept and said to replace the LED with a relay to switch a real light.