Quote Originally Posted by Ioannis View Post
1. Bright LEDs light even with nA current. I had a 5 meter LED stripe that some of the LEDs were ON while not connected to any power source!!! (Yeah, from static charge).
I reckon this is the issue here....high brightness leds, with a lens that intensifies even the smallest amount of light = looks too 'on' even when almost off!

Quote Originally Posted by Ioannis View Post
LEDs are not like lamps, so you cannot control them by a simple PWM idea. LEDs are current dependant devices so, you have to control them by current source and NOT by voltage as you do now.
Yeah, I know led's are current driven devices, but what gives...if the rated forward voltage is say 3.4V, but I run them at 3.1V regulated (because they yield sufficient brightness even at that voltage level)..then PWM principles ought to work fine (in fact, PWM does work just fine without the resistor...I'm running it here now!)....& there's always the internal series resistance of the PIC OP pin (5 ohms? not a lot, but resistance nevertheless)