125B · 4 knobs
From the vendor
The Wood Owl Acoustic is a PCB based on the Rockman Acoustic Guitar Pedal, which is a sort of compressor with bass and treble controls that gives an electric guitar a vaguely acoustic sound. While you may or may not find that the result sounds like an acoustic guitar, I think it does add a very nice resonance. This PCB was a collaboration with Cybercow (moo) on the PedalPCB forums. Cybercow traced and shared the circuit, and helped build and troubleshoot this board, including a few circuit revisions.
Schematic
The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 89 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 43 | ||||
| R2 | 3K3 | 3.3k | interactive BOM | |
| R7 | 3K3 | 3.3k | interactive BOM | |
| R19 | 3K3 | 3.3k | interactive BOM | |
| R25 | 3K3 | 3.3k | interactive BOM | |
| R4 | 4K7 | 4.7k | interactive BOM | |
| R22 | 4K7 | 4.7k | interactive BOM | |
| R23 | 4K7 | 4.7k | interactive BOM | |
| R103 | 4K7 | 4.7k | interactive BOM | |
| R13 | 56K | 56k | interactive BOM | |
| R24 | 56K | 56k | interactive BOM | |
| R101 | 56K | 56k | interactive BOM | |
| R102 | 56K | 56k | interactive BOM | |
| R29 | 100K | 100k | interactive BOM | |
| R30 | 100K | 100k | interactive BOM | |
| R36 | 100K | 100k | interactive BOM | |
| R39 | 100K | 100k | interactive BOM | |
| R10 | 1K | 1k | interactive BOM | |
| R26 | 1K | 1k | interactive BOM | |
| R31 | 1K | 1k | interactive BOM | |
| R9 | 470K | 470k | interactive BOM | |
| R18 | 470K | 470k | interactive BOM | |
| R11 | 3M9 | 3.9M | interactive BOM | |
| R12 | 3M9 | 3.9M | interactive BOM | |
| R14 | 10M | 10M | interactive BOM | |
| R15 | 10M | 10M | interactive BOM | |
| R28 | 75K | 75k | interactive BOM | |
| R32 | 75K | 75k | interactive BOM | |
| R34 | 220K | 220k | interactive BOM | |
| R35 | 220K | 220k | interactive BOM | |
| R38 | 100R | 100 | interactive BOM | |
| R100 | 100R | 100 | interactive BOM | |
| R1 | 2M2 | 2.2M | interactive BOM | |
| R3 | 11K | 11k | interactive BOM | |
| R5 | 680R | 680 | interactive BOM | |
| R6 | 6K8 | 6.8k | interactive BOM | |
| R8 | 22K | 22k | interactive BOM | |
| R16 | 12K | 12k | interactive BOM | |
| R17 | 1M | 1M | interactive BOM | |
| R20 | 91K | 91k | interactive BOM | |
| R21 | 10K | 10k | interactive BOM | |
| R27 | 82K | 82k | interactive BOM | |
| R33 | 68K | 68k | interactive BOM | |
| R37 | 5K6 | 5.6k | interactive BOM | |
| Capacitors 27 | ||||
| C102 | 82N | 82n | interactive BOM | |
| C103 | 82N | 82n | interactive BOM | |
| C104 | 82N | 82n | interactive BOM | |
| C105 | 82N | 82n | interactive BOM | |
| C106 | 82N | 82n | interactive BOM | |
| C107 | 82N | 82n | interactive BOM | |
| C1 | 10N | 10n | interactive BOM | |
| C8 | 10N | 10n | interactive BOM | |
| C16 | 10N | 10n | interactive BOM | |
| C10 | 4N7 | 4.7n | interactive BOM | |
| C11 | 4N7 | 4.7n | interactive BOM | |
| C12 | 4N7 | 4.7n | interactive BOM | |
| C6 | 10U | 10u | interactive BOM | |
| C101 | 10U | 10u | interactive BOM | |
| C2 | 2N7 | 2.7n | interactive BOM | |
| C3 | 33N | 33n | interactive BOM | |
| C4 | 3N9 | 3.9n | interactive BOM | |
| C5 | 100P | 100p | interactive BOM | |
| C7 | 330N | 330n | interactive BOM | |
| C9 | 8N2 | 8.2n | interactive BOM | |
| C13 | 22N | 22n | interactive BOM | |
| C14 | 1N2 | 1.2n | interactive BOM | |
| C15 | 39N | 39n | interactive BOM | |
| C17 | 220P | 220p | interactive BOM | |
| C18 | 1U | 1u | interactive BOM | |
| C100 | 100U | 100u | interactive BOM | |
| C108 | 100N | 100n | interactive BOM | |
| Diodes 6 | ||||
| D1 | 1N4148 | 1N4148 | interactive BOM | |
| D3 | 1N4148 | 1N4148 | interactive BOM | |
| D4 | 1N4148 | 1N4148 | interactive BOM | |
| D5 | 1N4148 | 1N4148 | interactive BOM | |
| D2 | GREEN | GREEN | interactive BOM | |
| D101 | 1N5817 | 1N5817 | interactive BOM | |
| Transistors 1 | ||||
| Q1 | J201 | J201 | interactive BOM | |
| ICs 5 | ||||
| U1 | TL072 | TL072 | interactive BOM | |
| U2 | TL072 | TL072 | interactive BOM | |
| U3 | TL072 | TL072 | interactive BOM | |
| U4 | TL072 | TL072 | interactive BOM | |
| U5 | TL061 | TL061 | interactive BOM | |
| Potentiometers 4 | ||||
| Body | A10K | A10k | interactive BOM | |
| Top | A10K | A10k | interactive BOM | |
| Gain | A500K | A500k | interactive BOM | |
| Volume | A500K | A500k | interactive BOM | |
| Trimmers 1 | ||||
| TRIM1 | 25K | 25k | interactive BOM | |
| LEDs 1 | ||||
| D100 | LED | LED | interactive BOM | |
| Other 1 | ||||
| TP1 | TestPoint | TESTPOINT | interactive BOM | |