HardLabs

Synth32

markeby·Synth32·Schematics/SpareBoards/NoiseFilter.kicad_sch

This repository ships a schematic but no board layout.

About the Synth32 PCB

Synth32 is an open source PCB design by markeby, published on GitHub. It is a board, with 140 components from 37 distinct parts.

Other key parts include the TL074, LM13700, ADG409 and TL072. By type, the board carries 80 resistors, 24 capacitors, 10 ICs, 6 transistors, 5 connectors and 4 test points.

It belongs with the audio and dev boards & breakouts designs in this gallery.

From the project

Complete source code for the Synth32 design

This project was begun as a darivative of much simpler projects.

The goal is a psudo polyphonic analog and/or multi-timbral synthesizer that is digitally controlled.

Utilizing components from the following manufacturers:

- Espressif - ESP32 processors - Sound Semiconductor, FatKeys™ - VCO, VCF, VCA - Adafruit - D/A Converter modules, I/O Expanders - HiLetgo - 2.0 ADK Mini USB Host Shield - Waveshare - Display module

Main components on the Synth32

TL074LM13700ADG409TL072

Synth32 bill of materials (BOM)

140 components, 37 distinct parts.

QtyPartRefs
5
TL074
U125, U128, U129, U132, U134
3
LM13700
U127, U131, U133
1
ADG409
U130
1
TL072
U135
6
2N3906
Q11, Q12, Q13, Q14, Q15, Q16
2
Conn_01x03
J90, J94
2
Conn_01x04
J91, J92
1
Conn_01x05
J93
2
1M
RV18, RV21
4
100k
RV19, RV22, RV23, RV24
2
5k
RV20, RV25
2
TP1
TP1, TP3
2
TP2
TP2, TP4
1
TL431CLPM
TL431A
Texas Instruments
VR4
2
1N4148
D20, D21
14
0.1µF
C126, C129, C134, C135, C136, C137, C138, C139 +6
4
0.22nF
C127, C128, C131, C132
2
20pF
C130, C133
2
220µF
C140, C143
2
47µF
C142, C145
Show 17 more
QtyPartRefs
4
49.9k
R261, R262, R267, R312
1
4.7k
R263
20
100k
R264, R265, R266, R268, R269, R281, R282, R284 +12
4
200k
R270, R271, R302, R303
12
1k
R272, R273, R276, R277, R296, R304, R305, R308 +4
10
10k
R274, R278, R283, R288, R289, R306, R310, R321 +2
4
68k
R275, R279, R307, R311
1
49.8k
R280
2
47k
R286, R327
2
36k
R290, R332
2
91k
R291, R333
2
15k
R292, R314
2
180k
R293, R315
4
620
R298, R299, R318, R319
2
12k
R313, R329
2
33k
R322, R337
6
330k
R326, R334, R335, R336, R339, R340

Synth32 design files

The KiCad project lives in the markeby/Synth32 repository on GitHub; these links point at the commit this page was built from.

Synth32: common questions

How many components are on the Synth32?

140 components, from 37 distinct parts. The full bill of materials is listed on this page.

Where can I download the Synth32 design files?

From the markeby/Synth32 repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Synth32 design in my own project?

The repository has no license, so all rights stay with markeby. Use it as a reference, and ask the author before reusing the design.

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