EDU DIY BBD

DIY EDU series BBD-based delay module

This module is based around a BBD integrated circuit and allows for classic delay-based effects, from slapback echoes to trailing reverberations, from flanger-like sounds to crusty down-sampled madness.

The module is DIY, sold as a kit by Erica Synths and comes with a very thorough assembly manual that provides deep insight into the functioning of every part of the circuit you'll build.

The module itself features all your classic delay-related controls, from delay time to feedback amount, a dry/wet mix control and even a switch to select between 2 different delay ranges.

A nice, surprising addition is a patch point labeled "Inhibit CV" which, whenever it is presented with a gate signal, will disconnect the clock signal from the BBD chip, essentially stopping the effect in its tracks. The clock will resume as soon as the gate goes low at this patch point, and the BBD circuit will then return to normal operation. This feature lets the player add some rhythm to the effect or perform other interesting shenanigans.

https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-bbd/