The Add Verb is a BTDR-3 based reverb pedal, giving a wide array of delay sounds, from slap back to room reverb and bigger. The four controls are Volume, Reverb, Tone and Decay. Making it a very versatile tool.
The dimensions of the pcb are 53,6 x 40,5mm.
This project is by GuitarPCB.com, in cooperation with Musikding. For any technical problem relating to building this project, please contact Barry at GuitarPCB.com forum.
You get full technical support at the GuitarPCB.com forum, membership is free of course:
Here is the direct link to the building docs, including layout and schematic: