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CAN-Bus-Diagnostic-Adapter

Matthew-Garcia·CAN-Bus-Diagnostic-Adapter

CAN-Bus-Diagnostic-Adapter PCB layout, top view — open source STM32 board by Matthew-Garcia

About the CAN-Bus-Diagnostic-Adapter PCB

CAN-Bus-Diagnostic-Adapter is an open source STM32 PCB design by Matthew-Garcia, published on GitHub. It is a 2-layer board measuring 90 × 55 mm, with 47 components from 31 distinct parts.

Its main chip is the STM32F072CBT6, from the STM32 family. Other key parts include the AP2112K-3.3TRG1, ISO1042DUBR, TPS22919DCKR and TMR 1-0511. By type, the board carries 17 capacitors, 12 resistors, 5 ICs, 4 jumpers, 4 diodes and 3 connectors.

From the project

Custom USB-C CAN bus diagnostic PCB featuring STM32 control, isolated CAN communication, ESD protection, and selectable termination.

Designed for Matthew Garcia's USB-C / STM32 / isolated CAN diagnostic interface project.

Status: schematic and component-placement draft. The PCB has zero routed copper tracks. It is NOT ready to order or connect to a vehicle. Native KiCad ERC/DRC and physical testing have not been performed. No Gerbers or drill files are supplied because this is not a fabrication release.

Main components on the CAN-Bus-Diagnostic-Adapter

STM32F072CBT6AP2112K-3.3TRG1ISO1042DUBRTPS22919DCKRTMR 1-0511

CAN-Bus-Diagnostic-Adapter bill of materials (BOM)

47 components, 31 distinct parts.

QtyPartRefs
1
STM32F072CBT6
U1
1
AP2112K-3.3TRG1
U2
1
ISO1042DUBR
U3
1
TPS22919DCKR
U4
1
TMR 1-0511
U5
1
ABM3-8.000MHZ-B2-T
Y1
1
USB4085-GF-A
J1
1
CAN terminal 5.08mm
J2
1
SWD 1x6 2.54mm
J3
1
1206L050YR 0.5A
F1
1
RESET short to reset
JP1
1
BOOT short for loader
JP2
1
TX ENABLE normally OPEN
JP3
1
120R TERM normally OPEN
JP4
1
USBLC6-2SC6
D1
1
PESD2CAN
D2
1
GREEN LED
D3
1
AMBER LED
D4
3
1uF 10V X7R
C1, C3, C11
1
4.7uF 10V X7R
C2
Show 11 more
QtyPartRefs
2
4.7uF 16V X7R
C4, C5
7
100nF 10V X7R
C6, C7, C8, C9, C10, C14, C15
2
27pF C0G 50V
C12, C13
1
100nF 16V X7R
C16
1
1uF 16V X7R
C17
2
5.1k 1%
R1, R2
3
0R
R3, R4, R6
1
100k
R5
3
10k
R7, R8, R11
2
1k
R9, R10
1
120R 1% 0.25W
R12

CAN-Bus-Diagnostic-Adapter design files

The KiCad project lives in the Matthew-Garcia/CAN-Bus-Diagnostic-Adapter repository on GitHub; these links point at the commit this page was built from.

CAN-Bus-Diagnostic-Adapter: common questions

What microcontroller does the CAN-Bus-Diagnostic-Adapter use?

The CAN-Bus-Diagnostic-Adapter is built around the STM32F072CBT6, from the STM32 family.

How big is the CAN-Bus-Diagnostic-Adapter PCB?

The CAN-Bus-Diagnostic-Adapter measures 90 × 55 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CAN-Bus-Diagnostic-Adapter?

47 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the CAN-Bus-Diagnostic-Adapter design files?

From the Matthew-Garcia/CAN-Bus-Diagnostic-Adapter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the CAN-Bus-Diagnostic-Adapter design in my own project?

The repository has no license, so all rights stay with Matthew-Garcia. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the CAN-Bus-Diagnostic-Adapter 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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