Hi Goeytex, I'm sorry I'm probably quite dumb but I can't follow you code on post #38 very well. Would it be possible to explain it a bit to a beginner? Its interesting to me that one can detect a light flashing at 100Hz by moving it fast!
The best way to understand it is to load it up and run it, using a single LED connected to the Picaxe and then look at the
output with a scope. It will look like a pulse train.
< Pwmduty, pin, 0 > is a way to turn off the main PWM. In the loop, the main PWM is turned on/off at about 500 hz.
This on/off time ratio is controlled by the 2nd ADC/Pot.
And yes, if you can dart your eyes back and forth fast enough while bobbing your head up and down at the right speed you could
see each pixel change in slow motion on your TV set. How that is relevant to your project I haven't a clue ........