aion PEPPERMILL Manual
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aion PEPPERMILL Manual

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PROJECT NAME
PEPPERMILL
BASED ON
Runoffgroove Peppermill
EFFECT TYPE
JFET overdrive
PROJECT SUMMARY
A super-simple drive created by boosting the signal into a J201 JFET until it clips in a tube-like manner.
Actual size is 2.3" x 1.86" (main board) and 1.78" x 0.86" (bypass board).
RUNOFFGROOVE PEPPERMILL
BUILD DIFFICULTY
Easy
DOCUMENT VERSION
1.0.0 (2020-06-05)
1

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Summary of Contents for aion PEPPERMILL

  • Page 1 PROJECT NAME PEPPERMILL BASED ON BUILD DIFFICULTY Runoffgroove Peppermill Easy EFFECT TYPE DOCUMENT VERSION JFET overdrive 1.0.0 (2020-06-05) PROJECT SUMMARY A super-simple drive created by boosting the signal into a J201 JFET until it clips in a tube-like manner. Actual size is 2.3” x 1.86” (main board) and 1.78” x 0.86” (bypass board).

  • Page 2: Table Of Contents

    The Aion FX version of the Peppermill is a direct adaptation of the original circuit, with one modification: the addition of a tone control. The original circuit has a R-C lowpass filter right before the volume, and by making the resistor value adjustable, you end up with a useful tone control without otherwise affecting the original circuit.

  • Page 3: Parts List

    DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. BATT Battery snap 9V battery snap Optional. Use the soft plastic type—the hard-shell type will not fit. 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. RUNOFFGROOVE PEPPERMILL...

  • Page 4: Build Notes

    Q1 spots. J201 adapters Many DIY builders are intimidated by the small size of surface-mount parts. Aion FX offers pre-soldered J201s on adapters so they can easily be used as through-hole parts.

  • Page 5: Schematic

    SCHEMATIC 1N5817 100uF 100n 100kC TONE 2N7000 J201 RUNOFFGROOVE PEPPERMILL...

  • Page 6: Drill Template

    125B INCH 0.625” 0.625” ø3/8” ø3/8” ø1/2” VOLUME GAIN x: -0.65, y: +1.71 x: 0.65, y: +1.71 ø9/32” ø9/32” TONE x: 0, y: +0.66 ø9/32” CENTER (0,0) FOOTSWITCH x: -0.775, y: -1.20 x: 0, y: -1.20 ø5/16” ø15/32” RUNOFFGROOVE PEPPERMILL...

  • Page 7: Enclosure Layout

    ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B RUNOFFGROOVE PEPPERMILL...

  • Page 8: Wiring Diagram

    GND +V +V JACK GND JACK GND GND PCB 125B Shown with optional 9V battery. If battery is omitted, both jacks can be mono rather than one being stereo. Leave the far-right lug of the DC jack unconnected. RUNOFFGROOVE PEPPERMILL...

  • Page 9: Licensing

    Runoffgroove circuit licensing Runoffgroove circuits have special licensing that is different from standard Aion FX projects. These projects are for personal use only and may not be used for commercial endeavors without approval from Runoffgroove.

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