I built this pedal about 10 months ago with a battery snap and only today have I finally got around to adding a DC jack. Thought I'd post my experience to help others! (and see if what I've done is safe!)
The DC jack I had/have has two prongs and a centre flat piece of metal (from bitsbox).
I had a quick look at the drawings in this thread and thought "that's easy". That was about the only time I thought for the next 10 minutes...here's what I did:
Soldered three pieces of wire onto the DC jack a black wire (to ground on the board), a red wire from one prong going to the red battery snap, and a red wire from the other prong going to the input on the board.
....
Yeah.
I tested it, battery wires started to catch fire. I switched it off!
What I've done now is removed the battery snap completely - I have the black still going to the circuit ground from the centre flat of the DC jack and a red from a prong to the board input. I just snipped the wires where the battery snap was and didn't replace either of them.
Edit - to clarify, there is nothing coming from the input jack prong that went to the battery ve-. (Where I've said board input above, I mean the power ve+ vero line.
So, I have a question: is what I've done OK?
AND, fellow newbies, BE CAREFUL!