You only really need 3 wires. 0v, ZeroCrossing & Data.
The diagram in the manual is correct. Just make sure if you are using a ready made 4 core phone lead that has 2 RJ12 plugs, that the wiring is " Straight Thru'". You can confirm this by holding both flugs side by side, both the same way up and look at the colour of the wires from left to right. They should be in the same order.
Oh yeah, you should also have a 4k7 or 10k pull-up on the zero crossing pin on the PIC.
Bookmarks