HardLabs

Bldc control ver3

pekkaroi·bldc-drive·hardware/bldc_control_v3/bldc_control_ver3.kicad_pcb

Bldc control ver3 PCB layout, top view — open source STM32 board by pekkaroi

About the Bldc control ver3 PCB

Bldc control ver3 is an open source STM32 PCB design by pekkaroi, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 98 × 38 mm, with 61 components from 22 distinct parts.

Its main chip is the STM32F103C8, from the STM32 family. Other key parts include the PC817, NCP1117ST33T3G, SFH6755T, AM26LV32 and 74LS125. By type, the board carries 21 resistors, 17 capacitors, 12 connectors, 6 ICs, 3 diodes and 1 crystal.

It belongs with the robotics & motion designs in this gallery, and the repository also holds 1 earlier revision of it.

From the project

Cheap and simple brushless DC motor driver designed for CNC applications using STM32 microcontroller

This is a project developing a simple BLDC servo controller. It is based on an STM32F103 microcontroller.

Some parts, especially the PID control loop is based on development done by user mcm_xyz in cnczone.com forum. Thank you! Check the thread http://www.cnczone.com/forums/open-source-controller-boards/283428-cnc.html

Second hardware revision with the above findings fixed is published. There are no known issues, two servo drives are succesfully driving my CNC router. Pics and videos to come..

Main components on the Bldc control ver3

PC817NCP1117ST33T3GSTM32F103C8SFH6755TAM26LV3274LS125

Bldc control ver3 bill of materials (BOM)

61 components, 22 distinct parts.

QtyPartRefs
1
PC817
IC1
1
NCP1117ST33T3G
U1
1
STM32F103C8
U2
1
SFH6755T
U3
1
AM26LV32
U4
1
74LS125
U5
1
CRYSTAL
X1
2
CONN_01X08
P1, P4
3
CONN_01X03
P2, P8, P11
1
CONN_01X06
P3
2
CONN_01X04
P5, P7
2
CONN_01X05
P6, P10
1
CONN_01X08
P12
1
CONN_01X02
P13
1
SN74LVC8T245
DD1
3
LED
D1, D2, D3
16
C
C1, C2, C3, C4, C5, C6, C7, C8 +8
1
CP2
C11
13
R
R1, R2, R3, R6, R7, R8, R9, R10 +5
2
1K
R4, R5
Show 2 more
QtyPartRefs
3
0
R11, R14, R20
3
NM
R12, R15, R21

Bldc control ver3 design files

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

Bldc control ver3: common questions

What microcontroller does the Bldc control ver3 use?

The Bldc control ver3 is built around the STM32F103C8, from the STM32 family.

How big is the Bldc control ver3 PCB?

The Bldc control ver3 measures 98 × 38 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bldc control ver3?

61 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bldc control ver3 design files?

From the pekkaroi/bldc-drive repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Bldc control ver3 design in my own project?

Yes, under the terms of its GPL-2.0 license, which pekkaroi chose for the repository.

Can I test firmware for the Bldc control ver3 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.

More boards in bldc-drive

Earlier revisions in the repo: bldc_control_ver2

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