This project captures my work building and refining an Arduino-based CAN bus system around the MCP2515 controller. It started as a data logger, grew into a filtered CAN interface, and later moved to a standalone ATmega328P setup programmed with Arduino as ISP.
 Initial Circuit |
 Initial Circuit |
 Final Circuit |
 Final Circuit |
The project followed a clear development path:
- I first built a CAN logger to receive and store bus traffic through an MCP2515 module.
- I then extended that setup with CAN filtering where can data was transfered only from one can line to the next.
- Finally, I moved the logger design onto a standalone ATmega328P and programmed it using an Arduino as ISP.
Each stage built on the previous one and helped me move from basic communication testing to a more complete embedded hardware workflow.
The logger reads incoming CAN frames, captures a timestamp, and writes the message data to a CSV file on an SD card. The implementation also includes status handling through serial output and an LED indicator so the hardware state is easy to monitor during testing.
CAN Logger
↓
CAN Filter Device
↓
Arduino as ISP Programming
↓
Standalone ATmega328P CAN Logger
- MCP2515 CAN controller integration over SPI
- CSV logging of CAN ID, DLC, and data bytes
- CAN acceptance filtering and mask configuration
- Arduino as ISP programming for standalone ATmega328P deployment
- Serial debugging and hardware bring-up
CanLogger/
├── CanFilter/
├── logger/
├── img/
└── README.md