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Hex mini drive

csiz·hex-single-motor-mini-drive·circuits-v0.1/hex-mini-drive.kicad_pcb

Hex mini drive PCB layout, top view — open source STM32 board by csiz
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About the Hex mini drive PCB

Hex mini drive is an open source STM32 PCB design by csiz, published on GitHub under the MIT license. It is a 4-layer board measuring 18 × 50 mm, with 62 components from 26 distinct parts.

Its main chip is the C8734, from the STM32 family. Other key parts include the C2058366, C5804616 and C6186. By type, the board carries 23 capacitors, 17 resistors, 6 transistors, 5 connectors, 4 ICs and 3 diodes.

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

From the project

FOC driver for a single BLDC motor.

Brushless motor driver for mini gear motors and servos. This driver focuses on fine force control using field oriented control (FOC). The motor can be commanded to move to track position, velocity, and/or force. The driver will maintain the current wave exactly 90 degrees out of phase to the EMF wave for maximum efficieny. Position is tracked via hall sensors, EMF feedback and I2C rotary sensors.

Hex mini drive, from the project README
From the project README

Main components on the Hex mini drive

C8734C2058366C5804616C6186

Hex mini drive bill of materials (BOM)

62 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C8734
~
U1
1
C2058366
~
U2
1
C5804616
~
U3
1
C6186
~
AMS
U4
6
C358681
~
Q1, Q2, Q3, Q4, Q5, Q6
1
C115962
~
X1
1
C262665
~
JS(钜硕电子)
CN1
2
C530673
~
kinghelm(金航标)
CN2, CN5
1
C9139
~
CN3
1
C5160305
~
CN4
1
C965840
~
XINGLIGHT(成兴光)
LED1
3
C2128
~
D1, D2, D3
1
300mΩ
Sunlord(顺络)
L1
1
10UH
10uH
Sunlord(顺络)
L2
3
10NF
10nF
C1, C2, C3
1
0.1UF
0.1uF
C4
6
10UF
10uF
C5, C14, C15, C16, C17, C23
3
1UF
1uF
SAMSUNG(三星)
C6, C7, C9
8
100NF
100nF
YAGEO(国巨)
C8, C10, C11, C12, C13, C20, C21, C22
2
30PF
30pF
FH(风华)
C18, C19
Show 6 more
QtyPartRefs
3
C163089
500mW 10mΩ
大毅科技
R1, R2, R3
1
100kΩ
R4
6
10Ω
UNI-ROYAL(厚声)
R5, R6, R7, R8, R9, R10
4
1.5kΩ
UNI-ROYAL(厚声)
R11, R12, R13, R14
1
10kΩ
R20
2
47kΩ
R21, R22

Hex mini drive design files

The KiCad project lives in the csiz/hex-single-motor-mini-drive repository on GitHub; these links point at the commit this page was built from.

Hex mini drive: common questions

What microcontroller does the Hex mini drive use?

The Hex mini drive is built around the C8734, from the STM32 family.

How big is the Hex mini drive PCB?

The Hex mini drive measures 18 × 50 mm, has 4 copper layers and is 1 mm thick.

How many components are on the Hex mini drive?

62 components, from 26 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 Hex mini drive design files?

From the csiz/hex-single-motor-mini-drive 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 Hex mini drive design in my own project?

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

Can I test firmware for the Hex mini drive 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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