PIC to Relay

[The Master]

Ok, heres that schematic. Im sorry its not the best looking one ever. I did it in M$ paint :P

The lefthand side of the optoisolator works exactly the same as an LED. Check the datasheet for the specific one your using for the voltage. Usually i put a 1K resistor between it and the PIC. I always put a 1K resistor between the opto and the G pin of the triac too although i cant remember why (maybe someone else can clarify this bit).

It may or may not help you but ive included a circuit that i designed to control 4 lights using triacs. I usually find that a PCB layout helps me more than a schematic so you have both just incase. The triac im using is a "BTA08-600B 8A 600V" and the opto is a "MOC3020M". Both resistors either side of the optos are 1Ks. I have a few of these circuits connected up and working perfectly