Dirrrty Delay
Extremely lo-fi and nasty delay pedal, based on a modified pt2399 delay board. The addition of delay time and feedback control to the existing circuit pushes the chip into wild oscillation territory, allowing the pedal to function as a standalone noise instrument as well.
It is an easy mod with very few components, if you’re lazy to build a cleaner delay or if you’re fine with how it sounds, it can be a great addition to other circuits that can use a delay.