Hippogriff
Member
On a personal note, 7 bits is passsable 8bits is 'okay' for passing fading and glow effects, but as someone who has a keen eye for the appearance of stepping effects in PWM'd LED drivers I'm going to recommend adjusting your software/hardware so that you get at least 10bits of dimming control...
I've not considered this before. My original challenge was 8-bit PWM'ing 9 LEDs via software with a 4MHz PIC (sans crystal) and that was a real struggle. Once I moved up to the 32MHz PIC 16F1825 (throwing hardware at the problem) that just went away as an issue and 8-bit software PWM for 9 LEDs is now simple and looks really good... I never thought about then increasing the PWM resolution. I think it might be worth a bit of investigation.
Piece of junk???