Hi,
I have a small LED light with a PIR sensor that I use at night in the bathroom. It was a cheap purchase off AliExpress and I'm really pleased with it except for one thing. The light only comes on for roughly 20 seconds before going off and this doesn't appear to be adjustable. Ideally I'd like it to stay on for a couple of minutes so decided to take it apart to see what I could do. After some searching online I came across a post that mentioned the on/off mechanism might be driven via a capacitor being charged and discharged. When I looked on the board I could see what looked like a single capacitor so I was convinced this was what was happening. I then attempting to use a few different sized electrolytic capacitors (50V 1uF, 25V 10uF, 16V 220uF) to bridge the existing capacitor (which remained in place) thinking they would hold more charge and the led would stay on for longer but it didn't seem to make any difference. Now I'm thinking either I'm using the wrong capacitors or maybe it's a little more complicated and one of the other chips on the circuit is providing the timer mechanism. I've attached some pictures of the board in question. Any assistance would be greatly appreciated.
Thanks in advance