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. :
DIY 4 Second Digital Delay – Electric Druid
PT2399 Digital Delay IC - DIY Audio Circuits
AMZ-FX Guitar Effects Blog » Blog Archive Delay pedal (prototype) - AMZ-FX Guitar Effects Blog
Amazon.com: DIY Delay Guitar Effect Pedal All Kits With1590B And 3PDT 9PIN Switch : Musical Instruments
Free Audio Service Manuals - Free download Peavey DDL3 Digital Delay Pedal Schematic