I am working on trying to get this whole dimmer thing going... I got a Triac hooked up to control a light on one of the Digital IO pins. (and only killed one ATMEGA in the process!) The problem I am having now is getting the Zero Cross detection working to be able to fire the Triac at the right tim…

AC Light Dimming

Forum 2005-2010 (read only) Hardware Interfacing

Dougl December 27, 2008, 5:16am 2

I think you missed the "K" in the resistance stated in Andrew Kilpatrick's circuit. He has two 47K ohm resistors in parallel( 23.5Kohm equiv ) and not 25 ohm. Try 4 100K ohm resistors in parallel.

Doug

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AC Light Dimming

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