Actually it`s a switched stereo jack Miro, to be honest i think the best place to be asking questions about this build are on Harald`s site. This is a VERY complex build and as a flanger enthusiast it`s one i considered...... for about 10 seconds. I`ve built over 200 working circuits and the one of the biggest mistakes i made early on was thinking masses of enthusiasm could overcome lack of experience.... it can`t. By experience i don`t just mean building, i mean debugging too. The thought of spending a couple of days building this and it not working straight off (very, very likely), and even thinking of debugging virtually guarantees this would`ve ended up in a drawer. Anyway, my quest for a diy flanger ended with the 9v electric mistress pcb from tonepad (madbean`s current lover is similar).Anyhoo, Best of luck with it.
If it wasn't for this website I would definitely have a life.
Yes that's a perfect example of why we don't do similar layouts. Without standing components that could be 20% larger, with a multi layer PCB it could be 40-50% smaller.
I've done a lot of pedal building over the last 6 years or so, but even I wouldn't like to have to debug that if it didn't work first time. Of course totally doable but could easily end up a nightmare, so sometimes vero just isn't the way to go IMO. PCB would be complicated enough but at least you don't have to worry about additional things like links, cuts and part placement.