PedalPCB Mini Heterodyne Receiver User manual

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Revision 12.29.20
Mini Heterodyne Receiver
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Controls
Square – Controls level of square wave fuzz
Sub – Controls level of subdivided frequency
Super – Controls level of multiplied frequency
Sub Interval (Rotary switch) – Sets the interval of subdivided voice
Sub Root (Toggle switch) – Selects the source of the subdivided root
Super Interval (Rotary switch) – Sets the interval of the multiplied voice
Super Root (Toggle switch) – Selects the source of the multiplied voice
Portamento / Vibrato (Toggle switch) – Selects between Portamento / Vibrato pitch modulation
Modulation Rate – Controls the rate of pitch modulation

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Mini Heterodyne Receiver
Important Assembly Instructions
Apply a small piece of insulating tape (Kapton tape, electrical tape, etc)
to the lugs of the Modulation Rate potentiometer to prevent contact with
the metal housing of the Portamento/Vibrato toggle switch.

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RESISTORS
R1 1M
R2 1K
R3 1M
R4 47K
R5 47K
R6 470K
R7 1M
R8 470K
R9 10K
R10 10K
R11 10R
R12 10K
R13 10K
R14 10K
R15 10K
R16 1K
R17 1M
R18 47K
R19 10K
R20 100R
R21 10R
R22 100R
R23 10M
R24 100K
R100 4K7
Mini Heterodyne Receiver
Parts List
Common ooard components (enclosure, footswitch, jacks, etc) are not listed
CAPACITORS
C1 100p
C2 100n
C4 10u
C5 1u
C6 100n
C7 22n
C8 100n
C9 100n
C10 100n
C11 100n
C13 100n
C15 100u
C16 100u
C19 1u
C20 1u
C21 1u
C22 1u
C23 100n
C24 22u
C25 2u2
C26 470p
INTEGRATED CIRCUITS
IC1 TL072CDR
IC2 CD4069UBM
IC3 CD40106BM
IC4 CD4024BM
IC6 CD4046BNSR
IC7 CD4017BM
IC8 CD4017BM
DIODES
D1 1N5817
POTENTIOMETERS
OSC B100K
RATE A500K
SQUARE B100K
SUB B100K
SWITCHES
OSC-SW Mini 1P8T - https://www.pedalpcb.com/product/mini-1p8t/
SUB-SW Mini 1P8T - https://www.pedalpcb.com/product/mini-1p8t/
SUB-ROOT SPDT (On/On) - Short shaft toggle recommended
GLIDE SPDT (On/On) - Short shaft toggle recommended
OSC-ROOT Type-2 DPDT (On/On/On)*
IMPORTANT NOTE: OSC-ROOT switch MUST be a Type-2 DPDT On/On/On toggle switch.
The following are known to be compatible parts:
100-DP6-T200B1M1QE (Short Shaft) ** RECOMMENDED **
https://lovemyswitches.com/taiway-dpdt-on-on-on-switch-solder-lug-short-shaft/
100-DP6-T100B1M1QE (Long Shaft)
https://lovemyswitches.com/taiway-dpdt-on-on-on-switch-solder-lug-long-shaft/
1MD6T1B1C0M1QE (Long Shaft)
http://smallbear-electronics.mybigcommerce.com/dpdt-on-on-on-solder-term/

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Mini Heterodyne Receiver

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Mini Heterodyne Receiver
Wiring Diagram

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Mini Heterodyne Receiver
Drill Template
125B enclosure with top mounted jacks
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