[sdiy] Rotary Switch -> illuminated PB w/ multicolor LED?

[sleepy_dog at gmx.de]

Roman Sowa:

> Yes, I will cut the corners where they protrude creating cut danger.
> Look what happened to car industry when cabin light dimmer required
> 1GHz ARM processor.

Did they bitbang the PWM, using Linux sysfs based GPIO toggling? :D

Has anyone of you a summary for me what makes things like the ICD4 cost
even 300 € ?
What besides the voltage generation and probably some isolators are in
there?