Digital Delay Pedal : 19 Steps (with Pictures) - Instructables
DIY Multi-Effect Pedal Platform is Now Low-Cost! – Deeptronic
DIY Reverb Pedal Circuit: Spring-Hall Reverb with PT2399 IC – Deeptronic
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. :
How to Significantly Improve a Simple PT2399 Delay Circuit | Circuit Salad
How to design a basic overdrive pedal circuit - Wampler Pedals
Amazon.com: DIY Delay pedal Guitar Effect Pedals Electric Effects Suite Delay -1 pedals Effect FREE SHIPING TTONE : Musical Instruments
Self-made analog delay pedal using BBD (BOSS DM-3 MOD)
Amazon.com: LANDTONE DIY Delay Analog Pedal and Sky Blue 1590B Case : Musical Instruments
Guitar FX Layouts: Crap-Fi Delay
ElectroSmash - Time Manipulator: Arduino Delay/Echo/Reverb Guitar Pedal