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 Make A DIY Guitar Delay Pedal - YouTube
Guitar FX Layouts: Crap-Fi Delay
Boy in Well
Glitch Delay is a DIY module you can make - and it makes lovely music - CDM Create Digital Music
Amazon.com: DIY Delay pedal Guitar Effect Pedals Electric Effects Suite Delay -1 pedals Effect FREE SHIPING TTONE : Musical Instruments