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Erick
2026-06-20 10:48:04 +02:00
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# What is this about
This project is related to my **thesis** the subject of Automotive Connectivity for my **Bachelor's degree** in **Vehicle Engineering**. The projects aims to build a functional CAN data logger, built around an **STM32 microcontroller**.
This project is related to my **Bachelor's thesis** on the subject of Automotive Connectivity for my degree in **Vehicle Engineering**. The projects aims to build a functional CAN data logger, built around an **STM32 microcontroller**.
## Overview
The objective is to specifically read CAN data on the **Komatsu PC210NLC-8** heavy duty excavator that functions on the SAE J1939 CAN bus standard. But ideally the logger will be compatible with any J1939 (or any other standard that uses 29bit extended IDs) bus, as it reads everything incoming from the buses (if programmed, it could filter out specific IDs) then sends everything via serial and saves it to an SD card.
The objective is to specifically read CAN data on the **Komatsu PC210NLC-8** heavy duty excavator that functions on the SAE J1939 CAN bus standard. But ideally the logger will be compatible with any J1939 (or any other standard) bus, as it reads everything incoming from the buses (if programmed, it could filter out specific IDs) then sends everything via serial and saves it to an SD card.
The logger attaches to a J1939 network comprised of 1 or 2 CAN buses (500 kbit/s and 250 kbit/s, as per standard), and logs all CAN messages (serial and microSD). The firmware uses **CMSIS‑RTOS v2** (FreeRTOS) to manage multiple tasks: CAN reception, logging, serial send, microSD write and heartbeats etc..
## Main Features