Groundhog Day

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🔥 One-Off Alert!

Jason at QuirkFX only makes one of each pedal — ever. This is the ONLY GROUNDHOG DAY in existence, and once it’s gone, it’s gone for good.

An analog-voiced digital delay.

This circuit is built on the PT2399 chip, and there are a lot of great delays out there based on the same idea (I’ve built a dozen variations). Technically it’s digital, but the signal path is analog and the chip itself has a warm, analog feel. This one doesn’t have a lot of bells/whistles/presets/etc., but it’s not a one-trick pony either. Set the Time and Repeats low for a nice slap back, put things more in the middle for a more typical tape delay sound, or push things into spacey territory with infinite repeats and self-oscillation. If you’re like me and don’t like menu-diving or fiddling obsessively with tap-tempo, you’ll find this versatile and easy to use.

Based on the Disaster Transport Jr., by Earthquaker Devices.

In terms of design, Groundhog Day is a classic movie, one of Bill Murray’s best roles (and I was in love with Andie MacDowell for a long time). I thought that worked well with a delay (over and over and over, each time a little more dark).

Controls
Use a standard 9V power supply, Center negative. Current draw 25 mA
Mix: Sets the output level of the effect signal. This should be treated as a gain control/master volume for the delay line. Unity is around noon and everything above noon will boost the delayed signal louder than the original. This is a gain control so, like any pedal with a lot of gain, a hint of noise and distortion at higher settings is to be expected.
Tone: Most delay pedals are heavily filtered at the output to remove the clock noise and other unwanted hash that is common from extending the range of the delay time beyond the limit of the circuitry. This usually leaves the delay sounding dark and muddy, and disappear when hitting it with dirt. The Disaster Transport has done away with a lot of the heavy filtering and replaced it with a tone control which allows the user to choose their desired sound and results in more natural tape-like repeats. The tone control is at it’s darkest fully counter-clockwise and brightens as you turn it clockwise. A good rule of thumb is to leave the tone control between off (fully counter clockwise) and noon at longer delay times. This will remove all the common noise from hyper-extending the circuit.
Time: From about 30ms fully counter clockwise to about 625ms fully clockwise.
Repeats: Sets the regeneration of the delay line. From one single repeat fully counter clockwise, subtle repeats around 9 O’clock, strong naturally decaying repeats at noon, near infinite repeats around 2 O’clock and full on self oscillation fully clockwise.

Made In Chicago, USA

From The Builder: 
A middle school teacher with a workshop in my basement, spraying things in the garage when weather allows. My daughter taught me to solder in 2019 (after being in robotics club in high school....NERD!), and I've been building pedals ever since. The circuits are based on existing pedals (I'm always up front about which), but it's the finishing that's quirky, with unique (occasionally odd) designs. Minor imperfections are par for the course and part of the charm.

Each design is one-of-a-kind, which means NO ONE ELSE will ever have this pedal but you. Hope you enjoy!