Pedal effect circuit design: getting started - EDN
DOD Analog Delay
Boss DM-2 Delay Guitar Pedal Schematic Diagram
ElectroSmash - Time Manipulator: Arduino Delay/Echo/Reverb Guitar Pedal
DLY-1 Lofi-Delay – Skull & Circuits
Boss DD-2 Digital Delay Guitar Pedal Schematic Diagram | Guitar pedals, Diy guitar pedal, Guitar
Guitar FX Layouts: Mad Professor Deep Blue Delay
This Is The Delay Pedal You Can Build Yourself | Hackaday
ElectroSmash - Time Manipulator: Arduino Delay/Echo/Reverb Guitar Pedal
DIY 4 Second Digital Delay – Electric Druid
The Veil, another PT2399 delay design
How to Significantly Improve a Simple PT2399 Delay Circuit | Circuit Salad
Guitar FX Layouts: Crap-Fi Delay
Build an experimental echo pedal - Make:
DIY 4 Second Digital Delay – Electric Druid
Made a delay pedal using the ”PT2399” chip. The delay is pretty simple as of now, but I'm still working on it as well as maybe adding an atmega328(Arduino) to it. :
Boy in Well
Digital Delay Pedal : 19 Steps (with Pictures) - Instructables