I made a 10W LED work light to go over my toolbox at work that is triggered by a PIR motion detection sensor. I used a 555 timer (Set up as re-triggerable) to make the light turn on with motion sensing, but turn off after a bit if no motion is sensed. It basically works as designed, but if it has been hooked up to my "12V" source for a while, the LED will glow at about 5-10% when it should be in the "Off" mode., it will still turn on fully when motion triggered. I think my IRF 540N Mosfet is not fully turning off, and I don't know why.
I am a novice electronics hobbyist, and designed the circuit myself, so there may just be a blatant mistake I am over looking. Here is my diagram:
The LED and driver combo I have used a bunch with no issues, and obviously power is getting to it to make it glow a bit. Any ideas?
I am a novice electronics hobbyist, and designed the circuit myself, so there may just be a blatant mistake I am over looking. Here is my diagram:
The LED and driver combo I have used a bunch with no issues, and obviously power is getting to it to make it glow a bit. Any ideas?