FuzzDog Recurring Nightmare, Instructions Manual

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R1 10K
R2 10K
R3 10K
R4 15K
R5 10K
R6 1K
R7 10K
R8 3K3
R9 10K
R10 10K
R11 82K
R12 6K8
R13 6K8
R14 3K6
R15 13K
R16 13K
R17 220R
R18 2K7
R19 680R
R20 10K
R21 10K
R22 1K
R23 470K
R24 470K
R25 10K
R26 10K
R27 1M
R28 100R
R29 8K2
R30 10K
R31 390R
C1 100n
C2 100n
C3 82n
C4 47n
C5 2n2
C6 33n
C7 2n2
C8 10n
C9 1u elec
C10 100n
C11 10n
C12 10u elec
C13 1u elec
C14 1u elec
C15 1u elec
C16 1u elec
C17 10u elec
C18 10u elec
C19 1u elec
C20 680n
C21 470p
C22 100n
C23 1u elec
C24 220p
C25 1u elec
C26 10n
C27 100u elec
C28 100u elec
C29 100u elec
C30 100u elec
US4* 100u elec
IC1 XR2206P**
IC2 PT2399
IC3 7660S***
IC1 MC33172P ‡
D1 14001
D2-3 14001
U1 78L05
BLEND 1OOKB
DEPTH 100KC
FBACK 100KC
FUZZ 1MA
SPEED 1MA
TIME 100KA
VOL 100KA
WET/DRY SPDT ON-ON
WFORM DPDT ON-ON
Schematic
+ BOM
*We missed the label for C31 - it’s labelled as US4.
**Beware fakes. They simply won’t work. See later.
***Ensure you get a charge pump with the ‘S’ suffix or
you’ll get a whining noise from the circuit.
‡These op-amps are very hard to source in through-
hole format, thought SMT versions are readily available.
We’ve tried a few different substitutions and LM358 gives
the best results.