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Arduino code for use with nano can PCB
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can-receive-all
nano-can
nano-slcan
README.md
Schematic_nano-can-pcb.png
arduino-nano.jpg
bottom-complete.jpg
bottom-gerber.JPG
build.md
mcp2515.JPG
obd2-connector.jpg
top-complete.jpg
top-gerber.JPG

README.md

nano-can

If you are looking for the BSides Scotland 2019 Badge please click the following link
https://github.com/mintynet/BSidesScotland2019

The sketches below will work but the specific build instructions are in the other repository

This repository has the arduino code for use with nano can PCB.
These were created as a cheap device for people to get into car hacking.

I take no responsibility for any issues caused if using either the hardware or the code

Requires the use of the following Arduino library

https://github.com/coryjfowler/MCP_CAN_lib

The can-receive-all sketch is the receive example from the above library which will show all messages on the CAN bus. CAN speed can be changed from 500kbps.
CAN messages are shown on the Serial Monitor
This can be used to find interesting messages

The nano-can sketch is configured for the OBD2 port speed (500kbps) and will listen to the can bus starting with CAN ID 0x128. Both can be changed in the code.
Whilst on the Serial Monitor it will show the changes between the messages

u and d will change the CAN ID up or down by 1
U and D will change the CAN ID up or down by 16
h shows the above information

The nano-slcan sketch is slcan compatible software but the serial chip on the arduino boards I use will only run at 57600bps


Schematic PCB Schematic Note:
Arduino Nano goes on the top with the URL on, the square at one end denote the position of the USB connector. Arduino Nano
MCP2515 Module goes on the bottom but DO NOT solder the Terminator Jumper or CAN pin headers to the PCB
You may require a jumper on the Terminator resistor
To solder the CAN module to the board, add extra solder to the back of the pins, then heat the pins and push through so that the pins are on the rear, then remove the plastic pin spacer left on the top and add extra solder to the pins. MCP2515
L goes to OBD2 pin 14
H goes to OBD2 pin 6
Completed Top Completed TOP
Completed Bottom Completed BOTTOM
OBD2 connector OBD2 connector
PCB Top
PCB TOP
PCB Bottom
PCB BOTTOM

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