Enclosure not stated · 2 knobs
Frantone VibutronVerified
Based on the Frantone Vibutron· 3 other boards clone it
From the post
Here's another one of my Eagle creations. The Vibutron is a great sounding tremolo from Frantone that uses a ICL8038 to produce the LFO. Originals use a rotary switch for selecting the waveform, but as lvlark pointed out on the Tagboard Effects blog, a on/on/on DPDT switch can be used instead (check out his layout for switch wiring). For you perf builders, this might be a bit difficult to translate to perf (especially with 3 traces under the 8038), but I'm sure one of you out there will make it work. :D This layout has also been uploaded to OshPark if you want a fabricated board–click the OshPark tab above.
Note: Red lines are jumpers
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 27 rows
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Check before you build · 2 values the reader of this layout was not sure of
- 10K count (9): several 10K resistors are packed closely at the left edge and around IC1/IC2 in a small image; one could be miscounted
- 2K left of IC3 (next to a 150n): printed 2K, distinct from the 2K2 at the right edge
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×9 | 10K | 10k | read from the layout by eye | |
| ×3 | 100K | 100k | read from the layout by eye | |
| ×2 | 20K | 20k | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 2K2 | 2.2k | read from the layout by eye | |
| ×1 | 2K | 2k | read from the layout by eye | |
| ×1 | 91K | 91k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 7K5 | 7.5k | read from the layout by eye | |
| ×2 | 390R | 390 | read from the layout by eye | |
| ×1 | 10R | 10 | 1W; read from the layout by eye | |
| Capacitors 6 | ||||
| ×1 | 22n | 22n | read from the layout by eye | |
| ×4 | 150n | 150n | read from the layout by eye | |
| ×1 | 220n | 220n | on the Fast switch; read from the layout by eye | |
| ×1 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×1 | 1000u | 1m | electrolytic; read from the layout by eye | |
| ×1 | 2u2 | 2.2u | electrolytic, on the Fast switch; read from the layout by eye | |
| Transistors 1 | ||||
| ×1 | 2N7000 | 2N7000 | MOSFET; read from the layout by eye | |
| ICs 3 | ||||
| IC1 | TLC2262 | TLC2262 | read from the layout by eye | |
| IC2 | LM741 | LM741 | read from the layout by eye | |
| IC3 | ICL8038 | ICL8038 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Depth | B100K | B100k | Potentiometer | read from the layout by eye |
| Speed | A100K | A100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 100K | 100k | read from the layout by eye | |
| Switches 2 | ||||
| Wave | DPDT on/on/on | DPDT ON/ON/ON | Waveform switch; Wave Sw2 to Wave Sw4; read from the layout by eye | |
| Fast | DPDT on/on | DPDT ON/ON | carries the 220n and 2u2; read from the layout by eye | |
Other boards based on the Frantone Vibutron
- Frantone Vibutron Dirtbox Layouts
- VibroBot Tremolo PedalPCB · 125B · $12.00
- Frantone Vibutron Tagboard Effects · 1590B