1590B · 2 knobs
Devi Ever Improbability Drive
Based on the Devi Ever Improbability Drive· 2 other boards clone it
From the post
The Improbability Drive is a knob-tweaker's dream–equal parts, overdrive, fuzz, and science experiement, and gets its name from Hitchhiker's Guide to the Galaxy. This one was a bit of a challenge (I even had to use a jumper. Gah!). B3ar over on FSB requested a layout with onboard pots and switches. Couldn't get the switches to fit, but they're only SPSTs so wiring those shouldn't be too much of a hardship. Onboard pots are mounted from the solder-side using right angle PCB mount pots. Should all fit in a 1590B.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 28 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×10 | 3.3M | 3.3M | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 10M | 10M | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| Capacitors 6 | ||||
| ×6 | 10nF | 10n | read from the layout by eye | |
| ×4 | 100nF | 100n | read from the layout by eye | |
| ×2 | 33nF | 33n | read from the layout by eye | |
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | printed 4001; read from the layout by eye | |
| Transistors 6 | ||||
| Q1 | 2N3391A | 2N3391A | read from the layout by eye | |
| Q2 | 2N2907A | 2N2907A | read from the layout by eye | |
| Q3 | 2N2907A | 2N2907A | read from the layout by eye | |
| Q4 | 2N2222A | 2N2222A | read from the layout by eye | |
| Q5 | 2N2907A | 2N2907A | read from the layout by eye | |
| Q6 | MPSA18 | MPSA18 | read from the layout by eye | |
| Potentiometers 5 | ||||
| Input Volume | A500K | A500k | Potentiometer | read from the layout by eye |
| One | B100K | B100k | Potentiometer | read from the layout by eye |
| Two | B1M | B1M | Potentiometer | read from the layout by eye |
| Three | B500K | B500k | Potentiometer | read from the layout by eye |
| Output Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Switches 2 | ||||
| Switch A | SPST | SPST | read from the layout by eye | |
| Switch B | SPST | SPST | read from the layout by eye | |
Other boards based on the Devi Ever Improbability Drive
- Devi Ever Improbability Drive Dirtbox Layouts
- Devi Ever Improbability Drive Tagboard Effects