HardLabs

Canbox

smartgauges·canbox·volvo_od2/hw/volvo_od2.net

Canbox

About the Canbox PCB

Canbox is an open source STM32 PCB design by smartgauges, published on GitHub. It is a board, with 70 components from 30 distinct parts.

Its main chip is the STM32F103C8Tx, from the STM32 family. Other key parts include the LM78M05_TO252 and ZL1040. By type, the board carries 34 resistors, 16 capacitors, 9 transistors, 3 ICs, 3 diodes and 2 connectors.

From the project

Firmware for canbus boxes

A canbus box is a device that allows you to connect your Android device to a CAN bus

General canbus box features: - turns on power for android when the ignition is turned on - turns on the power for the rear view camera - toggle backlight for android - displaying the state of the car on the android screen(open doors, parking sensors, etc.)

Since the adapter supports several car models and protocols, the adapter must first be configured for a specific car. To configure, the adapter must be connected to the Rx and TX lines at 38400 speed using any terminal program (putty, hyperterminal…

Main components on the Canbox

LM78M05_TO252STM32F103C8TxZL1040

Canbox bill of materials (BOM)

70 components, 30 distinct parts.

QtyPartRefs
1
LM78M05_TO252
U2
1
STM32F103C8Tx
U5
1
ZL1040
U8
5
MMBT3904
Q2, Q3, Q6, Q7, Q13
3
AO3407A
Q4, Q9, Q10
1
XC6206PxxxMR
Q11
1
8M
X1
1
Conn_01x04_Male
CON2
1
Conn_02x08_Odd_Even
J1
1
Polyfuse
F1
1
Buzzer
SP1
1
Z1SMAxxx
D1
2
1N4148W
D2, D6
2
10p
C1, C3
1
1u
C2
4
100n
C4, C11, C16, C18
2
22u
C5, C6
4
100n
C8, C12, C13, C14
1
1u
C9
2
100n
C17, C23
Show 10 more
QtyPartRefs
2
330
R1, R14
4
1k
R2, R33, R35, R75
11
10k
R3, R8, R9, R10, R11, R22, R44, R70 +3
1
1M
R4
6
4,7k
R5, R6, R23, R31, R74, R81
3
100
R13, R24, R76
3
100k
R15, R34, R37
1
0
R16
1
nc
R28
2
1,5
R77, R78

Canbox design files

The KiCad project lives in the smartgauges/canbox repository on GitHub; these links point at the commit this page was built from.

Canbox: common questions

What microcontroller does the Canbox use?

The Canbox is built around the STM32F103C8Tx, from the STM32 family.

How many components are on the Canbox?

70 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the Canbox design files?

From the smartgauges/canbox repository on GitHub, which has a netlist; the links under Design files point to each one.

Can I use the Canbox design in my own project?

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

Can I test firmware for the Canbox 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.

Similar boards