Quote Originally Posted by HenrikOlsson View Post
The PWM frequency needs to be at least 20-25Hz or you WILL see that the LED is actually blinking.
Hi Henrik,

I agree with your comment however it should be noted that a lot of people can still see the LED blinking at these rates. In fact, a small percentage of the population can still see LEDs blinking at 100Hz and higher!

Cheers
Barry