HardLabs

Bldc

mrkindustries·bldc·design/BLDC_4.kicad_pcb

Bldc PCB layout, top view — open source STM32 board by mrkindustries

About the Bldc PCB

Bldc is an open source STM32 PCB design by mrkindustries, published on GitHub. It is a 2-layer board measuring 38.5 × 65 mm, with 124 components from 57 distinct parts.

Its main chip is the STM32F40X_LQFP64, from the STM32 family. Other key parts include the NCP1117ST33T3G, DRV8302, LM73 and SN65HVD232. By type, the board carries 49 resistors, 47 capacitors, 9 connectors, 6 transistors, 5 ICs and 4 diodes.

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

From the project

Brushless DC Motor controller from Benjamin Vedder

This the Hardware for my open source custom ESC. This is a forked repository from mrkindustries, who made many improvements to my original hardware design.

Here is a BOM on google drive that I try to keep up to date: https://docs.google.com/spreadsheet/ccc?key=0AnvZ-ouEB058dGpzaDl4MUxNM3NxZ1BzTWNZZ1RhRUE&usp=sharing

Have a look at this post for a tutorial on how to get started: http://vedder.se/2014/01/a-custom-bldc-motor-controller/

Main components on the Bldc

STM32F40X_LQFP64NCP1117ST33T3GDRV8302LM73SN65HVD232

Bldc bill of materials (BOM)

124 components, 57 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F40X_LQFP64
U1
1
NCP1117ST33T3G
U2
1
DRV8302
U3
1
LM73
U301
1
SN65HVD232
U401
6
IRFS3006
Q1, Q2, Q3, Q4, Q5, Q6
1
MINI-USB-SHIELD-32005-201
X1
1
8MHz 10ppm
X2
1
HALL/Encoder
P1
1
SWD
P2
1
PWR_COMM
P3
1
IN+
P4
1
IN-
P5
1
MOTOR1
P6
1
MOTOR2
P7
1
MOTOR3
P9
1
CANBUS
P101
1
P***
1PIN
1
GREEN
D1
1
RED
D2
Show 37 more
QtyPartRefs
1
LED
D3
1
DIODESCH
D4
1
22u
L1
8
10u,50V
C1, C8, C9, C39, C40, C43, C44, C49
4
100n
C2, C3, C27, C32
4
4n7
C4, C5, C6, C7
10
2.2u
C10, C11, C12, C13, C14, C16, C17, C24 +2
2
15p
C15, C38
1
2.2u
C18
1
120p
C19
2
1u
C20, C52
1
6.8n
C21
1
22n
C22
1
1u
C23
2
100u
C25, C33
1
15n
C26
3
220n
C28, C29, C30
2
2.2n
C34, C36
1
15u,100V
C37
1
15u, 100v
C51
1
100nF
C301
1
1u
C401
7
33k
R3, R23, R26, R30, R32, R36, R46
9
2k2
R4, R5, R11, R12, R13, R22, R24, R27 +1
1
0R
R6
9
10k
R7, R8, R9, R10, R16, R20, R101, R102 +1
1
330k
R15
1
18k
R17
1
3k3
R18
1
15k
R19
1
220k
R21
1
1M
R25
6
4R7
R28, R29, R34, R35, R42, R43
6
100R
R37, R38, R48, R49, R50, R51
2
SHUNT
R53, R54
2
22R
R103, R104
1
NI
R401

Bldc design files

The KiCad project lives in the mrkindustries/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 STM32F40X_LQFP64, from the STM32 family.

How big is the Bldc PCB?

The Bldc measures 38.5 × 65 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bldc?

124 components, from 57 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 mrkindustries/bldc repository on GitHub, which has the KiCad layout 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 mrkindustries. 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.

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