Enclosure not stated · 3 knobs
Run Off Groove UBE ScreamerVerified
Based on the Run Off Groove UBE Screamer· 2 other boards clone it
From the post
Apparently it's Tube Screamer week. This is Run Off Groove's adaption of the classic overdrive to work around a CD4049UBE CMOS chip. More info, schematic and sound clip here. As you can see in the schematic, there's a resistor (RX) where different values will work for different guitar pickup types: 100k for single coils, 220k for humbuckers, 330-470k for hot humbuckers. I've included pads for a switch that will allow you to switch between 2 of the options. If you use the switch, remove the 100k resistor (which is RX) right by those pads from the board.
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 23 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×6 | 100K | 100k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 330Ω | 330 | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 100K | 100k | on the optional pickup switch; read from the layout by eye | |
| ×1 | 220K | 220k | on the optional pickup switch; read from the layout by eye | |
| Capacitors 7 | ||||
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×4 | 100nF | 100n | read from the layout by eye | |
| ×1 | 2.2nF | 2.2n | read from the layout by eye | |
| ×1 | 1.5nF | 1.5n | read from the layout by eye | |
| ×1 | 470nF | 470n | read from the layout by eye | |
| ×1 | 150pF | 150p | read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | 1N4148 | 1N4148 | value from the wiring diagram; read from the layout by eye | |
| D2 | 1N4148 | 1N4148 | value from the wiring diagram; read from the layout by eye | |
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| ICs 1 | ||||
| ×1 | CD4049UBE | CD4049UBE | read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | B500K | B500k | Potentiometer | read from the layout by eye |
| Tone | B500K | B500k | Potentiometer | read from the layout by eye |
| Volume | B100K | B100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Pickup | DPDT | DPDT | optional pickup switch; read from the layout by eye | |
Other boards based on the Run Off Groove UBE Screamer
- UBE Screamer Aion FX · 125B · $12.50
- Runoffgroove UBE Screamer Dirtbox Layouts