Build Your Own Clone Message Board

I made one of these and the only problem is that with 'repeat' and 'delay' at max it goes beyond 'infinite loop' and quickly goes into an increasingly loud loop that sounds like its going to shake the amp and house apart. I can watch out for that. I can turn down one or the other to control it, but its hard to find that super long repeat spot.

Update: on both pedals it is the repeats that goes over the top, whether or not the delay is at the max.

I just built another one for a friend and it does the exact same thing. I'm thinking about maybe increasing resistance going into one pot or another or changing the pot level, but this is a pretty tight board for playing around. Any ideas?





As a suggestion on this one, both times I got confused by the small disk caps, as my printer put the description for the second one on the next page and they are both circled in orange in the photos, so I somehow assume the first reference is to the second picture. I can tell them apart, I just jumbled the picture and description and put the 471 in the wrong place first. I also tend to have a different way of seeing things so maybe this is just my problem, but perhaps have both these caps in the same pic in the next iteration, circled with different colors would help.
This is a super fun pedal to play with and overall the instructions are super well done.

This is normal operation. Oscillation is a feature that a lot of people want, so that's why it does that. You can change the point at which the circuit goes into oscillation, or eliminate it completely, by increasing the value of R15 (for echo mode) and R16 (for ping pong mode). Also, you can install parallel clipping diodes across lugs 1 and 2 of the repeats pot to clip the oscillation and keep the oscillation from running away (reduces the peak volume of oscillation).

Thanks, good to know. Its not totally uncool, I think I just wanted to make sure I didn't screw it up. I may play with the r15 a bit with mine.