I connected a small LED strip (with 30 single LEDs, type 5630) as depicted below:
I'm using 9V instead of 12, because the strip lights well anyway (and I'm actually using a TIP122 instead of the 120, because it's what I found).
Exporting the GPIO pin as output and trigging it 1 and 0, turns the strip ON and OFF ... and that's OK. At least I know that the schematics should be OK too.
But I wanted to dim the strip it via PWM. I have the servoblaster library already installed and working for other applications, so I know it works on this Pi. But trying out some GPIO pins with it doesn't seem to light the strip at all
Does anyone see what could be wrong in this design? I also tried removing the resistor or using different pins...
Thanks in advance.