Hardware debounce?

[Cliff Karlsson]

I want to use debounce in a sketch that also uses sleep until interrupt witch won´t work with software debounce as I understand.

Is there some way to still be able to this by software or do I have to do it by hardware? I have found some examples where they use capacitators, but how do I know witch size capacitaor I need for a 1000ms debounce for example?

I have a optocoupler connected to Pin3-GND, but I always get two triggers from the optocoupler.

[mfalkvidd]

Debouncing can be done in software. A simple solution is to turn off interrups inside the interrupt handler and do delay 1000ms in the main loop before you go to sleep again. That ensures a maximum of 1 interrupt per second.

[TheoL]

@mfalkvidd If you happen to have a code example, I'd be much interested.

[mfalkvidd]

Attachinterrupt(...)
Gw.sleep(SLEEPTIME)
Delay(1000)

[lafleur]

For something that slow, try a MAX6816... cheap, sot-4 case