ElectroSmash - Time Manipulator: Arduino Delay/Echo/Reverb Guitar Pedal
Crazy Tube Circuits TI:ME Review - Premier Guitar
DIY 4 Second Digital Delay – Electric Druid
FC17 Analog Delay Pedal Guitar Effect Pedal Warm Real Bypass Circuit | eBay
DIY 4 Second Digital Delay – Electric Druid
StewMac Tape Op Delay Pedal Kit, With Bare Enclosure
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. :
Koogo Pure Analog Circuit Delay Guitar Effect Mini Pedal True Bypass 300 Series | eBay