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PROCYON NATURAL OVERDRIVE

2

TABLE OF CONTENTS

1

Project Overview

7

Enclosure Layout

2

Introduction & Usage

8

Wiring Diagram

3-4

Parts List

9

Licensing

5

Schematic

9

Document Revisions

6

Drill Template

INTRODUCTION

The Procyon Natural Overdrive is a clone of the BJFe Honey Bee Overdrive, a circuit first released in 
2002 that is credited for starting the “low gain overdrive” trend. 

The circuit itself is a rather unique overdrive design, incorporating both soft and hard clipping and 
utilizing frequency-dependent negative feedback from different points in the circuit, for a result that is 
often called “amplike” in tone. 

These pedals were handmade in Sweden and were extremely expensive ($300-400 USD), and so in 2011 
an agreement was made with BearFoot FX to produce them in the USA for a more reasonable cost. 

Bearfoot has also released a number of variants of this basic circuit such as the Model H, Model G, 
Honey Beest, Uber Bee, and Sparkling Yellow Overdrive. While each of these circuits are similar, the 
Procyon project only supports the standard Honey Bee (both BJFe and BearFoot versions, which have 
minor differences).

USAGE

The Procyon has the same control layout as most overdrive or distortion effects:

• 

Drive

 controls the gain of the op-amp stage which increases the amount of signal clipping.

• 

Nature

 is a very unique tone control, doing two things at once. On one half of the rotation it 

affects the amount of bass and changes the gain structure of the circuit. On the other half of the 
rotation, it blends in a frequency bypass capacitor on the gain-recovery FET, causing the highs to 
be emphasized more. The end result is that you have more bass on one side and more treble on the 
other, but the manner of accomplishing this is very different than something like the Big Muff.

• 

Volume

 controls the overall output level of the effect.

Summary of Contents for PROCYON

Page 1: ...VERSION BJFe Honey Bee Overdrive A workalike of one of the original hand made boutique pedals originally modeled after vintage Supro amps and noted for its dynamic low gain tone Overdrive 1 0 0 2018 0...

Page 2: ...has also released a number of variants of this basic circuit such as the Model H Model G Honey Beest Uber Bee and Sparkling Yellow Overdrive While each of these circuits are similar the Procyon projec...

Page 3: ...etal film resistor 1 4W R12 47k Metal film resistor 1 4W R13 51R Metal film resistor 1 4W R14 31k6 Metal film resistor 1 4W R15 31k6 Metal film resistor 1 4W RX1 4k7 Metal film resistor 1 4W Only in t...

Page 4: ...ute Original uses BF244A IC1 CA3130EZ Operational amplifier DIP8 IC1 S DIP 8 socket IC socket DIP 8 DRIVE 500kA 16mm right angle PCB mount pot VOL 50kB 16mm right angle PCB mount pot NATR 50kA 16mm ri...

Page 5: ...pF 3k 5MM LED 5MM LED 1k 220n GND 2u2 4n7 GND 1k 1uF 22n 27k 10k 4n7 47k 22n 4n7 1M 2k2 1N4007 1N4007 GND GND GND GND 5k6 1uF 47k 4n7 GND 4k7 2N5457 VA VA RPD D1 C13 IN OUT C15 R13 DRIVE 1 2 3 VOLUME...

Page 6: ...ssumes the use of closed frame jacks like the Switchcraft 111X If you d rather use open frame jacks please refer to the Open Frame Jack Drill Template for the top side LED hole drill size assumes the...

Page 7: ...PROCYON NATURAL OVERDRIVE 7 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B...

Page 8: ...GRAM 125B IN V GND N C N C OUT PCB IN GND V V JACK GND JACK OUT IN GND GND PCB OUT Shown with optional 9V battery If battery is omitted both jacks can be mono rather than one being stereo Leave the fa...

Page 9: ...as suggestions based on the experience and opinions of others Projects may be used for commercial endeavors in any quantity unless specifically noted No attribution is necessary though a link back is...

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