Mark Williams has been looking at how to generate signals to create PWM-like effects on the Pi. This lets him control the brightness of LEDs without using the PWM pin, albeit in a simulated kind of way. I’ll let him explain it on his blog. His sample code is in C, so perhaps someone can write a Python wrapper to make it a bit easier for others!
[…] recantha Mark Williams has been looking at how to generate signals to create PWM-like effects on the Pi. […]
Oooo… that’s interesting. I was thinking of doing something similar to that to run a LED cube with adjustable levels on each LED.