/diy/ - Do It Yourself

>>1686720
no, that's incorrect. Read, damn you.
the module provides that optoisolator so the MCU can detect the zero cross and know when to fire the triac. yes.
But the MOC304 optotriac, used to drive the load through a bigger triac, contains a zero cross circuit which does not allow it to switch on until the voltage across it crosses zero. it's not meant for use as a dimmer, it's for switching static loads.
so how and why does this work?