Kits: Voice of Saturn Voltage Controlled Filter
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Short Description:
This unit has a joystick or Voltage Controlled low-pass filter. It accepts two
inputs that are summed and also voltage controllable (or knob). The joystick is
modular, and can be patched to control or attenuate other equipment.
Skill level: Intermediate... maybe beginner
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Post mods / hacks, pics, videos and support questions here.
Features / Specs / Video:
Voice of Saturn Voltage Controlled Filter from CuriousInventor .
VOICE OF SATURN VC FILTER
- Voltage Controlled Filter (VCF): Can be controlled with VC inputs (0-5V), joystick or knob (knob acts as an offset voltage). Low pass cutoff and resonance are controllable.
- Two summing inputs with amplitude controllable by knob or VC (0-5V) input. Final output is similarly controllable.
- X-Y Modular Joystick: By default the joystick X controls cutoff frequency and Y controls resonance. If a cable is plugged into either the X/Yout or cutoff/resonance VC inputs, the default joystick connection is broken, and it can be used to drive other equipment, or the VCAs for the I/O. If an outside VC or audio signal is connected to the X/Yin of the joystick, the joystick will attenuate that signal instead of the default 5V.
Buy:
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Just the essentials without any case or knobs. It DOES include the joystick.
out of stock, products typically restock in less than a week
- $89.99
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Everything needed to make a full VoS Filter, including case and knobs.
out of stock, products typically restock in less than a week
- $159.99
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Fully Assembled and Tested, works out of the box.
out of stock, products typically restock in less than a week
- $259.99
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This unit has a joystick or Voltage Controlled low-pass filter. It accepts two inputs that are summed and also voltage controllable (or knob). The joystick is modular, and can be patched to control or attenuate other equipment.
out of stock, products typically restock in less than a week
- $29.99
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We highly recommend you get some colored ribbon cable if you're getting the everything kit. It's not included in the kit since we thought some people would already have enough wire. There's nothing particularly hard about building the kit except the large amount of wiring, we estimate 3-7 hours to get everything running.
Parts List and Spec Sheets:
All versions:
- C9,C11,C12,C14: .1uF ceramic
- C1: 330pf
- C7, C8, C10, C13: 10uF electrolytic
- C2,C3,C4: .033uF
- U1: MC7805CTG
- U4: MC7905CTG
- U3: CEM3372 (filter)
- IC1,IC2,IC3: quad opamp TL084CN
- C6: 4.7uF electrolytic
- C5: 2.2uF electrolytic
- D1,D2: schottky diode, 1A
- R1-4,7-10,13-14,25,27,30-33,36-39,,42,44,45,47,48: 10k 1/4W resistor
- R17-19,22,96: 1k
- R21,23,26: 22k
- R20: 33k 1/4W
- R24: 47k
- R40,41,49,50,51: 510k
- R5,6,11,12,28,29,34,35,43,46: 5.1k
- R15,16: 68k
- R91-95: 100k linear pot
- (3) 1/4" jacks
- (9) 1/8" 3.5mm switching jack
- RX,RY: joystick
- dpdt switch for power
- D9: red LED
- (1) LED panel mount holder for 5mm LEDs
- pcb
- 18 pin DIP socket (for op amps)
- (3) 14 pin DIP socket (for filter chip)
Also included in the Everything-Kit and Fully Assembled Versions:
- (2) 9V Battery holder (buy)
- (5) black knobs (buy)
- A silk-screened and pre-drilled case, with hardware and rubber feet (buy unfinished case)
- (8) 4-40 nuts (buy)
- (8) 4-40 screws (buy)
- (4) standoffs for the PCB (buy)
- (4) 2-56 x 7/16 screws (for joystick)
- (4) #2 nuts (washers may be included, also).
Building Instructions:
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Detailed assembly instructions are here.
Back-of-the-case connection diagram:
Schematic: