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Vm129-cpu

mirdej·vmix·electronics/vm129-cpu/vm129-cpu.kicad_pcb

Vm129-cpu PCB layout, top view — open source ESP32 board by mirdej
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About the Vm129-cpu PCB

Vm129-cpu is an open source ESP32 PCB design by mirdej, published on GitHub. It is a 4-layer board measuring 53.1 × 113.2 mm, with 95 components from 51 distinct parts.

Its main chip is the ESP32-S3-WROOM, from the ESP32 family. Other key parts include the LD1117S33TR_SOT223, LM311, 74HC244, 4N25 and LMH6643. By type, the board carries 38 resistors, 21 capacitors, 20 connectors, 11 ICs, 3 inductors and 2 diodes.

It belongs with the audio designs in this gallery.

From the project

Multichannel modular analog PAL video mixer based on the SYNKIE project

Multichannel modular analog PAL video mixer based on the SYNKIE project

The Anymix21 is a 12 channel analog video mixer based on the paradigm of classic audio mixing desks.

Each channel is a complete SYNKIE by itself, sort of. It can handle anything from DC to around 10Mhz, this means you can mix CV signals with audio with PAL composite video signals. Contrary to an audio mixer, inputs are DC coupled, with 0v being black and 0.7V white level. Negative levels are permitted but will be clipped at the final output stage.

Vm129-cpu, from the project README
From the project README

Main components on the Vm129-cpu

LD1117S33TR_SOT223LM31174HC2444N25LMH6643MAX43924053LM1881ESP32-S3-WROOM

Vm129-cpu bill of materials (BOM)

95 components, 51 distinct parts.

QtyPartRefs
1
LD1117S33TR_SOT223
U1
2
LM311
U2, U3
2
74HC244
U4, U13
1
4N25
U6
1
LMH6643
U8
1
MAX4392
U9
1
4053
U10
1
LM1881
U11
1
ESP32-S3-WROOM
U12
1
Supply
J1
1
mux
J2
1
triggers
J3
1
Syncbus
J4
1
Digital-Supply
J5
1
Digitalbus
J6
1
Frontpanel
J7
1
Sync-Bus
J8
1
MIDI
J9
1
pedals
J10
1
GENLOCK
J11
Show 31 more
QtyPartRefs
2
Conn_Coaxial
J12, J14
4
UMCC
J13, J15, J17, J18
1
Conn_01x02
J16
1
USB_C_Receptacle_USB2.0
J19
1
Conn_01x06
J20
1
D
D1
1
BAT54S
D2
3
Ferrite_Bead
FB1, FB2, FB3
2
10u
C1, C6
2
CP
C2, C5
13
100n
C3, C4, C9, C10, C11, C12, C13, C14 +5
1
1u
C7
2
C
C8, C20
1
1u
C21
5
4k7
R1, R7, R8, R9, R10
3
10k
R2, R33, R36
1
1k
R3
1
180
R4
2
510k
R5, R19
2
2k
R6, R13
7
3k
R11, R12, R14, R15, R17, R20, R21
1
300
R16
3
750
R18, R22, R24
1
100
R23
2
5k1
R25, R32
1
47k
R26
3
220
R27, R28, R29
3
75
R30, R31, R35
1
300
R34
1
680k
R37
1
4k7
R38

Vm129-cpu design files

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

Vm129-cpu: common questions

What microcontroller does the Vm129-cpu use?

The Vm129-cpu is built around the ESP32-S3-WROOM, from the ESP32 family.

How big is the Vm129-cpu PCB?

The Vm129-cpu measures 53.1 × 113.2 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the Vm129-cpu?

95 components, from 51 distinct parts. The full bill of materials is listed on this page.

Where can I download the Vm129-cpu design files?

From the mirdej/vmix repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Vm129-cpu design in my own project?

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

Can I test firmware for the Vm129-cpu without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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