Quote Originally Posted by richard View Post
for my 2 cents worth , the 1uf to ground probably just makes the fet switch slower and dissipate more energy . if the pwm freq is high enough and
if the light is for humans then pwm flicker is invisible even at 50 Hz [can you see your mains freq ac lighting flicker ?]

update - you were right - I had to remove the cap (base to ground on npn) altogether for the PWM to even work. I was using a .1uf - seems it was filtering off the signal. I didn't look too much into it as why with a scope - just removed it. The user manual puts comments in there like the pulse coming out of the PIC isn't really clean so I thought I'd clean it up. No need..