> Do you really need part-cycle dimming - =A0on:off of whole cycles
> would do the same on average. I made a 2-bar heater controller
> using 4017s, MOC3041 + triac and a rotary switch to select the
> ratio. Simple enough, a temperature sensor could be added

But then you need to detect zero crossings, otherwise pic will not
know when to switch on/off? That seems like a lot of overdesigning for
just a soft start.

--=20
KPL

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.