Hi there First thanks for the hints above. I think this is exactly what I need. But unfortunately I don't understand how this callback Function is used. As far as I understand I define all GPIO pins with the new method of the pigpio library, I set a glitch_filter and now whenever a GPIO edge (is it ...

Hi there I just bought a relay like this; http://alexnld.com/product/2pcs-12v-1-channel-relay-module-with-optocoupler-h-l-level-triger-for-arduino/ It allows switching between «Active Low» and «Active High». I read on the page of my supplier that by setting it to active low allows a secure usage wit...