Kit de Pedal de guitarra DIY Delay 1 con 3PDT de 9 pines, efectos de guitarra, interruptor de estoma True Bypass, Envío Gratis|delay pedal|guitar effect pedaleffect pedal - AliExpress
La Révolution Deux: Mad Professor - Deep Blue Delay
pcb design - Comparator on an op-amp in a PT2399 delay pedal - Electrical Engineering Stack Exchange
DIY 4 Second Digital Delay – Electric Druid
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. :
Deep Blue Delay Pedal – dada beatnik
DIY Reverb Pedal Circuit: Spring-Hall Reverb with PT2399 IC – Deeptronic
Pedal effect circuit design: getting started - EDN
Amazon.com: Delay-1 DIY Guitar Pedal Kit With 1590B Aluminum Metal Stomp Box Case Enclosure : Musical Instruments
pcb design - Comparator on an op-amp in a PT2399 delay pedal - Electrical Engineering Stack Exchange
Boss DD-2 Digital Delay Guitar Pedal Schematic Diagram