Enclosure not stated · 4 knobs
DigiTech Bad Monkey Overdrive
Based on the DigiTech Bad Monkey Overdrive· 6 other boards clone it
From the post
Schematic is avaiable HERE.
And a requested layout without input and output buffers
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 33 rows
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Check before you build · 4 values the reader of this layout was not sure of
- Small can at column 20, rows J-K reads '1nF' but is drawn as an electrolytic; printed clearly, unusual value, probably 1uF
- 5Ω resistor on row A (columns 15-16): printed clearly, unusual value
- 5K x2 (columns 14 and 15): printed clearly, unusual value
- Drive pot taper printed '100kA?' and Level '100kB?' - the legend itself is unsure
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 11 | ||||
| ×1 | 5Ω | 5 | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×2 | 5K | 5k | read from the layout by eye | |
| ×5 | 10K | 10k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×2 | 27K | 27k | read from the layout by eye | |
| ×4 | 100K | 100k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | ? | ? | LED resistor, value not given; read from the layout by eye | |
| Capacitors 11 | ||||
| ×1 | 47pF | 47p | read from the layout by eye | |
| ×1 | 120pF | 120p | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×4 | 47nF | 47n | read from the layout by eye | |
| ×1 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×2 | 470nF | 470n | read from the layout by eye | |
| ×1 | 1nF | 1n | electrolytic; read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| ×1 | 330uF | 330u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| ×2 | 1N4148 | 1N4148 | D1, D2; read from the layout by eye | |
| D3 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 3 | ||||
| Q1 | J201 | J201 | JFET; read from the layout by eye | |
| Q2 | 2N3904 | 2N3904 | read from the layout by eye | |
| Q3 | 2N3904 | 2N3904 | read from the layout by eye | |
| ICs 2 | ||||
| IC1 | NJM4580 | NJM4580 | read from the layout by eye | |
| IC2 | NJM4580 | NJM4580 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Drive | A100K | A100k | Potentiometer | legend: 100kA?; read from the layout by eye |
| High | W100K | W100k | Potentiometer | read from the layout by eye |
| Low | W100K | W100k | Potentiometer | read from the layout by eye |
| Level | B100K | B100k | Potentiometer | legend: 100kB?; read from the layout by eye |
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