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BLDCM MCU

brenocq·bldc-motor·electronics/BLDCM-MCU/BLDCM-MCU.kicad_pcb

BLDCM MCU PCB layout, top view — open source STM32 board by brenocq

About the BLDCM MCU PCB

BLDCM MCU is an open source STM32 PCB design by brenocq, published on GitHub under the MIT license. It is a 4-layer board measuring 32 × 32 mm, with 91 components from 15 distinct parts.

Its main chip is the STM32F446RE, from the STM32 family. Other key parts include the SN74LV1T34DBVR, ISM330DHCX, SK6805 and AS5048A. By type, the board carries 37 test points, 28 capacitors, 20 ICs, 3 resistors, 1 crystal and 1 connector.

It belongs with the robotics & motion designs in this gallery.

From the project

High-precision BLDC motor and controller development from scratch (in progress...)

The schematic PDFs are available in BLDCM-Power/BLDCM-Power.pdf and BLDCM-MCU/BLDCM-MCU.pdf. The Gerber files and interactive BOM can be found in the release section of the repository.

Main components on the BLDCM MCU

STM32F446RESN74LV1T34DBVRISM330DHCXSK6805AS5048A

BLDCM MCU bill of materials (BOM)

91 components, 15 distinct parts.

QtyPartRefs
1
STM32F446RE
U1
1
SN74LV1T34DBVR
U2
1
ISM330DHCX
U3
16
SK6805
U4, U5, U6, U7, U8, U9, U10, U11 +8
1
AS5048A
U20
1
ECS-3225MVLC-240-CN
Y1
1
52991-0308
J1
1
EVPAKE31A
K1
37
Test point 0.5mm
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +29
1
1uF
C1
25
100nF
C2, C3, C4, C5, C7, C8, C9, C10 +17
1
4.7uF
C6
1
10uF
C28
2
10K
R1, R4
1
500
R5

BLDCM MCU design files

The KiCad project lives in the brenocq/bldc-motor repository on GitHub; these links point at the commit this page was built from.

BLDCM MCU: common questions

What microcontroller does the BLDCM MCU use?

The BLDCM MCU is built around the STM32F446RE, from the STM32 family.

How big is the BLDCM MCU PCB?

The BLDCM MCU measures 32 × 32 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the BLDCM MCU?

91 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the BLDCM MCU design files?

From the brenocq/bldc-motor repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the BLDCM MCU design in my own project?

Yes, under the terms of its MIT license, which brenocq chose for the repository.

Can I test firmware for the BLDCM MCU 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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