1V/Oct CV Unit

8 months ago 281
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9V input. Output range: 5V-6V over twelve "keys." Designed to be connected to twelve simple switches or buttons and fed into an oscillator's CV input jack.

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Note: This design also features a space (currently unused) for a built-in dual oscillator (SN74LVC2G132).


PCB Version 1

Schematic Draft


ID Name Designator Quantity
1 1N4148 D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D1 12
2 +9V Input V1 1
3 SPST_Open S1,S2,S3,S4,S5,S6,S7,S8,S9,S10,S11,S12 12
4 1K R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R23 12
5 1.25K R12 1
6 1.3K R13 1
7 1.36K R14 1
8 1.412K R15 1
9 1.475K R16 1
10 1.538K R17 1
11 1.607K R18 1
12 1.68K R19 1
13 1.748K R20 1
14 1.829K R21 1
15 1.902K R22 1
16 2K R24 1


Filename Download
PCB_2020-05-04_01-10-18 copy_2020-05-05_10-13-04.json
CV Pitch Keyboard controller_2020-05-05_10-19-21.json
1vOct-12key COPY.ods
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