Timing

Projects Programming
1

Anyone know how to let Arduino count the time when the pin is high and stop when pin is low?

2

Anyone know how to let Arduino count the time when the pin is high and stop when pin is low?

Yes.

There is a pulseIn() function that works well for timing pins that have externally-applied signals, but that does not seem to apply to your case, based on your other post.

3

Thanks PaulS

Yup, I dont think the function do work for me. But thanks for letting me know more function and reply for this post.

Regards
zheng koon