I didn't design this but .. The use of the stereo jack allows you to run the kit using a battery in addition to having AC.
The trimmer simply allows you to set the brightness of the LED (using your mm, you can then determine what value to use for your CLR).
I suppose you could just go to the site and see the build docs?
I was looking over this again, and have a couple of questions if you don't mind.
Are the stereo jacks signal or battery related. As far as I've seen we don't mess with stereo signals on pedal building (at least I haven't seen any, it would require double everything on board). Of course it could just be for stereo cables, giving them mono signal anyway. What got me thinking was the "from batt" marked on the pcb.
Also, what is the little pot for? Volume?
I'm asking because I'm trying to make a vero build out of it, and I wanna make sure I won't leave anything out.
Thanks!
Yeah, 220, 221. Whatever it takes.