Small problem with laser-based persistance-of-vision system

Projects General Guidance
21

Also what part of make the PWM frequency higher do you not understand?

22

AWOL:
You could change the millisecond delay to something shorter.
Maybe a few tens of microseconds?

That would be great. How do you do that? I've only ever heard of the delay() function.

23

There's a really useful reference section over at the main site.

24

Grumpy_Mike:
Also what part of make the PWM frequency higher do you not understand?

The problem with PWM is, as I explained earlier, if you use analogOut(laserPin, 10); for example, its on for 10 clicks but off for 245 clicks! That's a big problem

25

No you do not understand.
You use a PWM value of 128 BUT you change the PWM FREQUENCY!!!

26

Grumpy_Mike:
No you do not understand.
You use a PWM value of 128 BUT you change the PWM FREQUENCY!!!

ooooooohh..

27

This works:

void loop()
{
  delayMicroseconds(100);
  PORTD += B10000000;
}

If the value is too small it becomes a solid line. Probably because the wave isn't very square. Fixing that though is over my head.