Enclosure not stated · 5 knobs
Soliton MultivibeA True Classic with Modern Features
- Category
- Vibrato / Chorus
- Price
- see vendor
From the vendor
I have to admit that I love a good vibe pedal. There are many excellent ones out there that do a great job getting those classic tones. However, I had the thought that it would be really cool to have the option of creating more complex movement of the phasing in a vibe pedal and decided that doing digital control would allow for some really fun flexibility.
The digital control is a primary distinguishing feature of the Soliton. An ATTiny85 produces the LFO using the input from a potentiometer. The code has been made flexible enough to allow for a wide range of LFO shapes: sine, triangle, square, rising sawtooth, falling sawtooth, or even arbitrary shapes. The LFO shape is stored in the code as a wave table that is used for creating the LFO output voltage. Digital control also allows for specifying multiple modes and including tap tempo. Further modifications are possible to make it t
Schematic
The schematic is in the vendor's build document, page 1. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 62 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 19 | ||||
| R1 | 1M | 1M | ||
| R2 | 1M | 1M | ||
| R3 | 10k | 10k | ||
| R4 | 10k | 10k | ||
| R5 | 47k | 47k | ||
| R6 | 47k | 47k | ||
| R7 | 10k | 10k | ||
| R8 | 47k | 47k | ||
| R9 | 15k | 15k | ||
| R10 | 22k | 22k | ||
| R11 | 47k | 47k | ||
| R12 | 47k | 47k | ||
| R13 | 47k | 47k | ||
| R14 | 47k | 47k | ||
| R15 | 47k | 47k | ||
| R16 | 100k | 100k | ||
| R17 | 100k | 100k | ||
| R18 | 10k | 10k | ||
| R19 | 56k | 56k | ||
| Capacitors 15 | ||||
| C1 | 100n | 100n | ||
| C2 | 100u | 100u | ||
| C3 | 47u | 47u | ||
| C4 | 15n | 15n | ||
| C5 | 100u | 100u | ||
| C6 | 100n | 100n | ||
| C7 | 220n | 220n | ||
| C8 | 100p | 100p | ||
| C9 | 4n7 | 4.7n | ||
| C10 | 100u | 100u | ||
| C11 | 470p | 470p | ||
| C12 | 100u | 100u | ||
| C13 | 1u | 1u | ||
| C14 | 470p | 470p | ||
| C15 | 1u | 1u | ||
| Diodes 1 | ||||
| D1 | 1N400x, 1N5817 | 1N400X / 1N5817 | ||
| ICs 4 | ||||
| IC1 | TL072P | TL072P | ||
| IC2 | 78L05Z | 78L05Z | ||
| IC3 | TL074P | TL074P | ||
| U1 | ATTINY85-20PU | ATTINY85-20PU | ||
| Opto 4 | ||||
| LDR1 | KE-10720 | KE-10720 | ||
| LDR2 | KE-10720 | KE-10720 | ||
| LDR3 | KE-10720 | KE-10720 | ||
| LDR4 | KE-10720 | KE-10720 | ||
| Potentiometers 5 | ||||
| DELTA | 25kB | B25k | ||
| DEPTH1 | 25kC | C25k | ||
| DEPTH2 | 25kC | C25k | ||
| SPEED1 | 10kB | B10k | ||
| SPEED2 | 10kB | B10k | ||
| Trimmers 2 | ||||
| OUT_TRIM | 100k | 100k | Trimmer | |
| RLED | 10k | 10k | Trimmer | |
| Switches 2 | ||||
| MODE | SPDT | SPDT | ||
| SW | LSP10 | LSP10 | ||
| LEDs 4 | ||||
| D2 | LED | LED | ||
| D3 | LED | LED | ||
| D4 | LED | LED | ||
| LED | LSP10 | LSP10 | ||
| Other 6 | ||||
| +9V | LSP10 | LSP10 | ||
| GND | LSP10 | LSP10 | ||
| GND_IN | LSP10 | LSP10 | ||
| GND_OUT | LSP10 | LSP10 | ||
| IN | LSP10 | LSP10 | ||
| OUT | LSP10 | LSP10 | ||