HardLabs

SMDUv3

sabanekko3·sMDUv3·sMDUv3_PCBDesign/sMDUv3.kicad_pcb

SMDUv3 PCB layout, top view — open source STM32 board by sabanekko3

About the SMDUv3 PCB

SMDUv3 is an open source STM32 PCB design by sabanekko3, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 57 × 25.9 mm, with 66 components from 30 distinct parts.

Its main chip is the STM32G431CBUX, from the STM32 family. Other key parts include the SN65HVD230, 9V_LR, L78L33_SOT89 and C3655801. By type, the board carries 25 resistors, 16 capacitors, 6 ICs, 6 transistors, 5 connectors and 3 diodes.

From the project

小型汎用BLDCモタドラ

sMDUはM2006/M3508，そしてその他各種BLDCを回すことのできる汎用性の高い小型モタドラである。

回路データ（kicad8）は フォルダ プログラム（cube IDE 1.19.0）は フォルダ ゴミカスGUIは フォルダ

基本的には，ロボマスモータ（M3508とM2006）を回すことができ，+αで他のモータも回すことができるような拡張性を持たせることを目標として設計した。

ロボマスモータ以外のモータも駆動することが可能であり，制御側から見てあたかもM2006/M3508を制御しているかのようにモータを制御することが可能である点が最大の特徴である。

非常停止モードの赤点滅は，モールス信号状の表示によりエラーフラグレジスタの状態を表す。 トンは0，ツーは1を表し，，0bit目から7bit目までの状態を順に表す。 例えば過電流+低電圧により非常停止状態となっている場合， となるため，LED表示はツーツートントントントントントン，となる

Main components on the SMDUv3

SN65HVD2309V_LRL78L33_SOT89STM32G431CBUXC3655801

SMDUv3 bill of materials (BOM)

66 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
~
U1
1
SN65HVD230
U2
1
9V_LR
U3
1
L78L33_SOT89
U4
1
STM32G431CBUX
STM32G431CBUx
U5
1
C3655801
~
U6
6
BSC13DN30NSFD
Q1, Q2, Q3, Q4, Q5, Q6
1
C1870467
Resonator
Y1
1
CONN_01X04
Conn_01x04
J1
1
CONN_01X07
Conn_01x07
J2
1
CONN_01X03
Conn_01x03
J3
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J4
1
CONN_01X04
Conn_01x04
J5
2
JUMPER_2_BRIDGED
Jumper_2_Bridged
B1, B2
1
SW_Push
SW1
1
C513367
LED_BARG
D1
2
C191023
D
D2, D3
1
C1002
FerriteBead
FB1
7
0.1U
0.1u
C1, C6, C7, C8, C10, C11, C12
5
4.7U
4.7u
C2, C4, C5, C9, C13
Show 10 more
QtyPartRefs
1
100uF~
C3
3
1u
C14, C15, C16
1
120
R1
3
10K
10k
R2, R3, R7
6
1k
R4, R5, R6, R8, R17, R18
6
22
R9, R10, R12, R13, R15, R16
2
3m
R11, R14
4
30K
30k
R19, R20, R21, R22
2
5.1K
5.1k
R23, R24
1
x
R25

SMDUv3 design files

The KiCad project lives in the sabanekko3/sMDUv3 repository on GitHub; these links point at the commit this page was built from.

SMDUv3: common questions

What microcontroller does the SMDUv3 use?

The SMDUv3 is built around the STM32G431CBUX, from the STM32 family.

How big is the SMDUv3 PCB?

The SMDUv3 measures 57 × 25.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the SMDUv3?

66 components, from 30 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 SMDUv3 design files?

From the sabanekko3/sMDUv3 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 SMDUv3 design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the SMDUv3 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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