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Index of /diy/Schematics/Delay Echo and Samplers
Digital Delay Pedal : 19 Steps (with Pictures) - Instructables
How to design a basic overdrive pedal circuit - Wampler Pedals
DIY 4 Second Digital Delay – Electric Druid
pcb design - Comparator on an op-amp in a PT2399 delay pedal - Electrical Engineering Stack Exchange
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. :
The Valve Wizard
Improved version of the original Rebote delay. | Diy guitar amp, Electronic circuit projects, Electronic circuit design