Enclosure not stated · 6 knobs
EarthQuaker Devices Bit CommanderVerified
Based on the EarthQuaker Devices Bit Commander· 7 other boards clone it
From the post
Hi guys! Alex here and I'm very excited to join the tagboardeffects squad. Thanks to Mark and Miro for the opportunity, and thanks to Travis, Zach and Javi for joining along.
My first contribution to the main site is a great guitar synthesizer from EarthQuaker Devices.
I would like to thank Njokki for reverse-engineering his original pedal.
Info about the original:
The Bit Commander is a monophonic analog guitar synthesizer with four octaves of vintage square wave synth tones. Its no-nonsense interface makes it easy to add or subtract octaves to create a wide variety of sounds without having to dial in envelopes or oscillators. Ripping sub-octave thump, pulsing octave down, a lightly squared base tone and a swelling transformer based octave up all join together to make a single guitar sound like an army of olde tyme synths.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 24 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×4 | 10K | 10k | read from the layout by eye | |
| ×3 | 220K | 220k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×2 | 22n | 22n | read from the layout by eye | |
| ×1 | 10n | 10n | read from the layout by eye | |
| ×1 | 1n | 1n | read from the layout by eye | |
| ×8 | 1u | 1u | electrolytic; read from the layout by eye | |
| ×2 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×2 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | 1N4148 | 1N4148 | D1, D2; read from the layout by eye | |
| D3 | 1N4001 | 1N4001 | read from the layout by eye | |
| ICs 3 | ||||
| ×1 | LM386 | LM386 | printed 386D; read from the layout by eye | |
| ×1 | TL072 | TL072 | read from the layout by eye | |
| ×1 | CD4024BE | CD4024BE | printed 4024BE; read from the layout by eye | |
| Transformers 1 | ||||
| ×1 | TM011-R | TM011-R | audio transformer, S and P sides marked; read from the layout by eye | |
| Potentiometers 6 | ||||
| Filter | B5K | B5k | Potentiometer | read from the layout by eye |
| Up | B2K | B2k | Potentiometer | read from the layout by eye |
| Level | A100K | A100k | Potentiometer | read from the layout by eye |
| Sub | B100K | B100k | Potentiometer | read from the layout by eye |
| Base | B100K | B100k | Potentiometer | read from the layout by eye |
| Down | B100K | B100k | Potentiometer | read from the layout by eye |
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- EarthQuaker Devices Bit Commander Effects Layouts (blog)
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