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I have a single bulb pendant ceiling light in a funky shade and I'd like to run some led strip lights around the shade.

I've seen this: https://www.olenstechnology.com/product/lampchamp/

Which would work in concept but seems to be a bit big and more than really needed.

Is there a way to wire in a USB socket into the lamp power? Could I dismantle a wall socket USB (like this: USB wall socket) and hook it into the ceiling wiring?

Or are there any better / dedicated mains to USB socket devices out there?

  • you can get socket-to-plug adapter for ~$2, then a small USB wall charger. you can also get socket adapters that have another socket and two plugs. – dandavis Nov 20 '17 at 19:46
  • @dandavis are you talking E27 sockets? Or wall sockets? As I do not need or want a wall socket in the ceiling! ;-) – RemarkLima Nov 20 '17 at 19:56
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    i mean something flush like this into which you pop a small USB adapter like this giving you safe USB in-ceiling without wiring. afaik, there's no direct adapter from E27 to USB, but let me know if you find one. – dandavis Nov 20 '17 at 20:01
  • Ah, I see... Bit then I lose the actual E27 bulb... But maybe there's a splitter for it? – RemarkLima Nov 20 '17 at 20:03
  • yeah, one like this, but that's a bit bulkier, and might need a side-exiting USB adapter to keep it in the fixture. – dandavis Nov 20 '17 at 20:05
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I don't see a non-hokeydokey way to mix mains powered E27 and LED strips in the same fixture, and USB only makes it worse. Here's what I'd do.

Convert the whole works to 12V or 24V DC

For the LED strips, you use any of the literally thousands of 12V LED strips readily available for $7 per 5 meters, all over ebay and amazon, or hundreds of 24V LED strips.

For the E27 screw-in bulb, you use 12-24V LED bulbs intended for RVs. Most of them work on both 12V and 24V.

If it has a lamp cord and plugs in, just put a 12v or 24v "wall wart" power supply on the end of the lamp cord. If you have space up in the lamp, you could also use a modular power supply such as those made by Meanwell.

This will not be dimmable. But for the LED strips, 12/24V dimming and RGB controllers are readily available and could be tucked up inside the lamp. They use a wireless remote. This would work for the LED strips not the screw-in.

If someone screws in a 120V bulb into the socket, it just won't work.

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