HardLabs

CawDrive

noxrick91·caw-drive·PCB/CawDrive.kicad_pcb

CawDrive PCB layout, top view — open source STM32 board by noxrick91

About the CawDrive PCB

CawDrive is an open source STM32 PCB design by noxrick91, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 50 × 42 mm, with 96 components from 41 distinct parts.

Its main chip is the STM32F446RETx, from the STM32 family. Other key parts include the TJA1051T/3/1J, TLV76733DRVR, WAFER-SH1.0-2PWB, DRV8323RSRGZR and MT6835GT-STD. By type, the board carries 37 capacitors, 26 resistors, 10 ICs, 7 transistors, 5 diodes and 2 connectors.

From the project

三相直流无刷电机驱动器硬件

Main components on the CawDrive

TJA1051T/3/1JTLV76733DRVRWAFER-SH1.0-2PWBDRV8323RSRGZRSTM32F446RETxMT6835GT-STD

CawDrive bill of materials (BOM)

96 components, 41 distinct parts.

QtyPartRefs
1
TJA1051T/3/1J
U1
1
TLV76733DRVR
U2
5
WAFER-SH1.0-2PWB
U5, U6, U10, U11, U12
1
DRV8323RSRGZR
TI
U7
1
STM32F446RETx
U8
1
MT6835GT-STD
U9
1
NMOS
Q1
6
TPH3R704PL
Q7, Q8, Q9, Q10, Q11, Q12
1
CSTNE16M0V530000R0
muRata
X1
1
WAFER-SH1.0-6PWB
CN2
1
WAFER-SH1.0-4PWB
CN3
5
MountingHole_Pad
H5, H6, H7, H8, H9
1
SMAJ36CA/TR13
Brightking
TV1
1
MCU_STA_LED
D1
1
DRV_STA_LED
D2
1
D_Schottky_Small
D3
1
PWR_STA_LED
D4
1
ENCODER_STA_LED
D6
1
39nH
L1
1
22uH_±20%_1.4A
L2
Show 21 more
QtyPartRefs
12
0.1uF
C1, C2, C3, C4, C5, C6, C11, C12 +4
3
1uF
C7, C31, C32
1
2.2uF
C9
2
0.1uF/50V
C10, C19
2
0.1uF/50V
C15, C33
3
22uF
C16, C34, C35
11
10uF/50V
C20, C21, C22, C23, C24, C25, C26, C29 +3
1
47nF/50V
C27
1
1uF/50V
C28
1
0.1uF/50V
C30
2
10k 0.1%
R1, R20
10
10k
R2, R3, R5, R6, R10, R16, R17, R22 +2
2
0Ω
R4, R24
4
510Ω
R7, R9, R11, R15
1
75k 0.1%
R8
1
3k 0.1%
R12
1
54.9k ±0.1%
R13
1
10k ±0.1%
R14
2
5mΩ 1%
R18, R19
1
10k NTC
R21
1
120Ω 1%
R26

CawDrive design files

The KiCad project lives in the noxrick91/caw-drive repository on GitHub; these links point at the commit this page was built from.

CawDrive: common questions

What microcontroller does the CawDrive use?

The CawDrive is built around the STM32F446RETx, from the STM32 family.

How big is the CawDrive PCB?

The CawDrive measures 50 × 42 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the CawDrive?

96 components, from 41 distinct parts. The full bill of materials is listed on this page.

Where can I download the CawDrive design files?

From the noxrick91/caw-drive repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the CawDrive design in my own project?

Yes, under the terms of its GPL-3.0 license, which noxrick91 chose for the repository.

Can I test firmware for the CawDrive 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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