HardLabs

DigitalAudioProcessor

BlockWorker·ModularAudio·DigitalAudioProcessor/DigitalAudioProcessor.kicad_pcb

DigitalAudioProcessor PCB layout, top view — open source STM32 board by BlockWorker

About the DigitalAudioProcessor PCB

DigitalAudioProcessor is an open source STM32 PCB design by BlockWorker, published on GitHub. It is a 4-layer board measuring 40 × 40 mm, with 66 components from 41 distinct parts.

Its main chip is the STM32H725RGVx, from the STM32 family. Other key parts include the TOSLINK_RX and USBLC6-2SC6. By type, the board carries 22 capacitors, 16 test points, 15 resistors, 8 connectors, 3 ICs and 2 inductors.

It belongs with the audio designs in this gallery.

From the project

Compact, modular, versatile, hi-fi audio system concept.

Main components on the DigitalAudioProcessor

TOSLINK_RXUSBLC6-2SC6STM32H725RGVx

DigitalAudioProcessor bill of materials (BOM)

66 components, 41 distinct parts.

QtyPartRefs
1
TOSLINK_RX
U1
1
USBLC6-2SC6
U2
1
STM32H725RGVx
U3
1
SWD
J1
1
I2S_OUT
J2
1
I2S_1
J3
1
USB
J4
1
I2S_3
J5
1
I2C
J6
1
I2S_2
J7
1
3.3V
J8
1
I2S_OUT_BCK
TP1
1
I2S_OUT_DATA
TP2
1
I2S_OUT_LRCK
TP3
1
I2S_1_BCK
TP4
1
I2S_1_DATA
TP5
1
I2S_1_LRCK
TP6
1
SPDIF_IN
TP7
1
I2S_3_BCK
TP8
1
I2S_3_DATA
TP9
Show 21 more
QtyPartRefs
1
I2S_3_LRCK
TP10
1
I2C_~{INT}
TP11
1
UART_RX
TP12
1
UART_TX
TP13
1
I2S_2_BCK
TP14
1
I2S_2_DATA
TP15
1
I2S_2_LRCK
TP16
1
Shunt?
FB1
1
2.2µH
L1
2
1µF
C1, C5
2
4.7µF
C2, C12
12
0.1µF
C3, C4, C7, C8, C9, C10, C11, C13 +4
3
10µF 25V
C6, C16, C17
1
30pF
C14
1
220pF
C18
1
220µF 6.3V
C22
1
10kΩ
R1
1
0Ω
R2
4
10Ω
R3, R6, R9, R12
8
27Ω
R4, R5, R7, R8, R10, R11, R13, R14
1
1kΩ
R15

DigitalAudioProcessor design files

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

DigitalAudioProcessor: common questions

What microcontroller does the DigitalAudioProcessor use?

The DigitalAudioProcessor is built around the STM32H725RGVx, from the STM32 family.

How big is the DigitalAudioProcessor PCB?

The DigitalAudioProcessor measures 40 × 40 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the DigitalAudioProcessor?

66 components, from 41 distinct parts. The full bill of materials is listed on this page.

Where can I download the DigitalAudioProcessor design files?

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

Can I use the DigitalAudioProcessor design in my own project?

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

Can I test firmware for the DigitalAudioProcessor without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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