HardLabs

BLDC

banbatakumi·BLDC·CurcuitV4/CurcuitV4.kicad_pcb

BLDC PCB layout, top view — open source STM32 board by banbatakumi

About the BLDC PCB

BLDC is an open source STM32 PCB design by banbatakumi, published on GitHub. It is a 2-layer board measuring 40 × 40 mm, with 87 components from 24 distinct parts.

Its main chip is the STM32F303K8TX, from the STM32 family. Other key parts include the AS5600-ASOT, DRV8300DPWR, MCP9700X-ETT, INA181 and AP7375-3.3. By type, the board carries 30 resistors, 23 capacitors, 14 diodes, 7 ICs, 6 transistors and 4 connectors.

It belongs with the robotics & motion designs in this gallery, and the repository also holds 3 earlier revisions of it.

Main components on the BLDC

AS5600-ASOTDRV8300DPWRSTM32F303K8TXMCP9700X-ETTINA181AP7375-3.3

BLDC bill of materials (BOM)

87 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AS5600-ASOT
IC1
1
DRV8300DPWR
U1
1
STM32F303K8TX
STM32F303K8Tx
U2
1
MCP9700X-ETT
MCP9700x-ETT
U3
2
INA181
U4, U6
1
AP7375-3.3
U7
6
Q_NMOS_DGS
Q1, Q2, Q3, Q4, Q5, Q6
1
CSTNE16M0V530000R0
Y1
1
CONN_01X02
Conn_01x02
J1
1
CONN_01X03
Conn_01x03
J2
1
CONN_01X07
Conn_01x07
J3
1
CONN_01X02
Conn_01x02
J4
2
SW_Push
SW1, SW2
6
LED
D1, D2, D4, D5, D12, D13
7
D_Schottky
D3, D6, D7, D8, D9, D10, D11
1
SMAJ13A
D14
12
10U
10u
C1, C2, C6, C9, C10, C11, C12, C13 +4
8
0.1U
0.1u
C3, C5, C8, C16, C17, C18, C19, C24
2
100U
100u
C4, C7
1
1u
C14
Show 4 more
QtyPartRefs
10
1k
R1, R3, R5, R8, R26, R27, R28, R29 +2
12
10K
10k
R2, R6, R7, R10, R11, R13, R15, R18 +4
6
10
R4, R9, R12, R14, R19, R21
2
10M
10m
R16, R24

BLDC design files

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

BLDC: common questions

What microcontroller does the BLDC use?

The BLDC is built around the STM32F303K8TX, from the STM32 family.

How big is the BLDC PCB?

The BLDC measures 40 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BLDC?

87 components, from 24 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 BLDC design files?

From the banbatakumi/BLDC 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 BLDC design in my own project?

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

Can I test firmware for the BLDC 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.

Earlier revisions in the repo: CurcuitV3, CurcuitV2, CurcuitV1

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