https://stream.echo6.co/videos/watch/45ca089e-7558-4df3-b2c0-c5f6d1a6e76c This little light is cheap and trashy, but it works and has scope for improvement. Easiest improvement would be to add a much bigger lithium cell, so it lasts longer between charges. There's a void of about 6mm under the PCB for the battery. A classic Nokia style cell does fit in the space. This unit uses an unusual chip that seems to be dedicated to the function of a PIR light. It interfaces with a common PIR sensor and seems to deal with detecting signal fluctuations and timing without any external capacitors other than a basic filter. I've not managed to pin down the exact chip yet. The most notable oddity is the use of pins 2+ and 4- for power. Searching on your local eBay for the following keyword string should find them:- LED Motion Sensor Light Night PIR Battery Wireless Cabinet Stair Lamps Magnetic Target price is around £$€5. The chip has been identified as an mx8098g If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.patreon.com/bigclive (extra streams and channel interaction) Or alternatively:- http://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty. #ElectronicsCreators Wed, 15 Apr 2026 11:42:11 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/45ca089e-7558-4df3-b2c0-c5f6d1a6e76c All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.