HardLabs

BlockBoxController

BlockWorker·ModularAudio·BlockBoxController/BlockBoxController.kicad_pcb

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

About the BlockBoxController PCB

BlockBoxController is an open source STM32 PCB design by BlockWorker, published on GitHub. It is a 4-layer board measuring 80.5 × 40 mm, with 87 components from 46 distinct parts.

Its main chip is the STM32H725VGTx, from the STM32 family. By type, the board carries 29 capacitors, 23 resistors, 15 connectors, 11 test points, 6 transistors and 1 IC.

It belongs with the audio designs in this gallery.

From the project

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

Main components on the BlockBoxController

STM32H725VGTx

BlockBoxController bill of materials (BOM)

87 components, 46 distinct parts.

QtyPartRefs
1
STM32H725VGTx
U1
2
NX138BK
Q1, Q2
4
DMG2302UK
Q3, Q4, Q5, Q6
1
B1_SWLED
J1
1
SWD
J2
1
NHD-3.5-320240FT-CON
J3
1
CHG
J4
1
AMP
J5
1
I2S
J6
1
B1_LCD_SWITCH
J7
1
LED
J8
1
B1_LEDMODE
J9
1
I2C1/USART1
J10
1
I2C4/UART4
J11
1
B1_LED_BRIGHTNESS
J12
1
I2C5
J13
1
B1_BTN
J14
1
PWR
J15
1
35WR10K
RV1
1
DEBUG_TX
TP1
Show 26 more
QtyPartRefs
1
DEBUG_RX
TP2
1
CHG_SMB_SCL
TP3
1
CHG_SMB_SDA
TP4
1
CHG_ACOK
TP5
1
I2C1_SCL/USART1_TX
TP10
1
I2C1_SDA/USART1_RX
TP11
1
I2C4_SCL/UART4_RX
TP12
1
I2C4_SDA/UART4_TX
TP13
1
I2C5_SDA
TP14
1
I2C5_SCL
TP15
1
2.2µH
L1
4
1µF
C1, C15, C16, C22
2
4.7µF
C2, C17
16
0.1µF
C3, C4, C5, C6, C7, C8, C10, C11 +8
3
10µF 25V
C9, C19, C20
1
220pF
C21
1
220µF 16V
C27
2
220µF 6.3V
C28, C29
6
50/100Ω
R1, R2, R3, R4, R6, R7
1
10kΩ
R5
6
4.7kΩ
R8, R9, R14, R15, R16, R17
1
47Ω
R10
1
10Ω
R11
2
27Ω
R12, R13
4
0Ω
R18, R19, R20, R21
2
1kΩ
R22, R23

BlockBoxController design files

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

BlockBoxController: common questions

What microcontroller does the BlockBoxController use?

The BlockBoxController is built around the STM32H725VGTx, from the STM32 family.

How big is the BlockBoxController PCB?

The BlockBoxController measures 80.5 × 40 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the BlockBoxController?

87 components, from 46 distinct parts. The full bill of materials is listed on this page.

Where can I download the BlockBoxController 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 BlockBoxController 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 BlockBoxController 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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