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Zoxnoxious Backplane and VCA

brer-rabbit·zoxnoxious·kicad/vca_backplane/vca_backplane.kicad_pcb

Zoxnoxious Backplane and VCA PCB layout, top view — open source Raspberry Pi board by brer-rabbit
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About the Zoxnoxious Backplane and VCA PCB

Zoxnoxious Backplane and VCA is an open source Raspberry Pi PCB design by brer-rabbit, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 133.8 × 102.9 mm, with 86 components from 33 distinct parts.

Its main chip is the DMG2305UX, from the Raspberry Pi family. Other key parts include the DG442XY, TL072, MCP4822, M24C02-WMN and AS3360. By type, the board carries 27 capacitors, 26 resistors, 13 ICs, 12 connectors, 4 transistors and 1 test point.

It belongs with the audio designs in this gallery.

From the project

Analog synth / software interface

The directories below contain KiCad files for the Zoxnoxious synthesizer. This includes files for both schematics, PCB layout, and assembly. Some boards also have a datasheet.

Z2203: Yamaha FM-based voice card with YM2203 chip Pole Dancer: pole mixing filter utilizing an SSI2140 and SSI2190 Z3340: Oscillator based around an AS3340 with four sync modes that can be combined Z3372: Lowpass filter with AS3372 filter chip. Stereo panning, filter and resonance modulation. * Z5524: dual VCO voice card. SSI2130 oscillator for TZFM, AS3394 for second VCO and filter. Powerful.

Main components on the Zoxnoxious Backplane and VCA

DG442XYTL072MCP4822M24C02-WMNAS336074HCT24574LVC245PCA9555PW74HCT138NE5532

Zoxnoxious Backplane and VCA bill of materials (BOM)

86 components, 33 distinct parts — part numbers from the project's BOM.

QtyPartRefs
3
DG442XY
DG442xY
U1, U9, U12
1
TL072
U2
1
MCP4822
U3
1
M24C02-WMN
U4
1
AS3360
U5
1
74HCT245
U6
1
74LVC245
U7
1
PCA9555PW
U8
2
74HCT138
U10, U11
1
NE5532
U13
1
DMG2305UX
Q1
1
DMMT5401
Q2
2
BSS138
Q3, Q4
1
Eurorack Power
J1
6
Conn_02x20_Odd_Even
J2, J3, J5, J7, J10, J11
1
Conn_01x03
J4
1
Conn_02x20_Odd_Even
J6
3
AudioJack_729JH
J8, J9, J12
1
10k
RV1
1
100k
RV2
Show 13 more
QtyPartRefs
1
TestPoint
TP9
1
LED
D1
1
4.7U
4.7u
C1
21
0.1U
0.1u
C2, C3, C4, C5, C6, C7, C8, C9 +13
1
4.7N
4.7n
C11
2
22u
C12, C19
2
100P
100p
C24, C25
15
47K
47k
R1, R4, R5, R9, R10, R12, R14, R17 +7
5
10K
10k
R2, R3, R6, R15, R16
2
3K3
3k3
R7, R8
1
51
R13
1
4K7
4k7
R18
2
100
R27, R28

Zoxnoxious Backplane and VCA design files

The KiCad project lives in the brer-rabbit/zoxnoxious repository on GitHub; these links point at the commit this page was built from.

Zoxnoxious Backplane and VCA: common questions

What microcontroller does the Zoxnoxious Backplane and VCA use?

The Zoxnoxious Backplane and VCA is built around the DMG2305UX, from the Raspberry Pi family.

How big is the Zoxnoxious Backplane and VCA PCB?

The Zoxnoxious Backplane and VCA measures 133.8 × 102.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Zoxnoxious Backplane and VCA?

86 components, from 33 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Zoxnoxious Backplane and VCA design files?

From the brer-rabbit/zoxnoxious repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Zoxnoxious Backplane and VCA design in my own project?

Yes, under the terms of its GPL-3.0 license, which brer-rabbit chose for the repository.

Can I test firmware for the Zoxnoxious Backplane and VCA without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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