The Freematics Vehicle Data Logger stands out as an innovative, Arduino-compatible OBD-II data logging solution, evolving from our successful 2014 Kickstarter project. This device empowers you to tap into your vehicle’s data like never before, thanks to its seamless integration with the Arduino ecosystem.
Update: The latest Freematics Vehicle Data Logger V4 is now available!
What is an Arduino OBD2 Logger and Why Freematics Excels?
An Arduino Obd2 Logger, at its core, is a device that reads data from your car’s On-Board Diagnostics II (OBD-II) system and utilizes the Arduino platform for processing and logging this information. While numerous OBD-II readers are available, the Freematics Vehicle Data Logger distinguishes itself by offering programmability and a wealth of integrated features, making it a superior choice for enthusiasts and professionals alike.
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An Arduino-inside badge highlighting the programmable nature of the Freematics Vehicle Data Logger.
The heart of the Freematics logger is the ATMega328P microcontroller, the same chip found in the Arduino UNO. This compatibility means you can program the logger using the familiar Arduino IDE and readily available libraries. Accessing OBD-II data, as well as the device’s onboard peripherals, becomes straightforward with our well-documented Arduino libraries. Firmware updates are easily managed via ICSP (SPI pins) using tools like USBasp or Arduino as ICSP. Detailed programming guidance is available in our user guide.
Key Features That Set Freematics Apart
The Freematics Vehicle Data Logger is packed with features designed for comprehensive vehicle data acquisition and analysis:
- Full Arduino Compatibility: Leverage the vast Arduino ecosystem for customization and expansion.
- Direct OBD-II Port Connection: Simple plug-and-play installation and powered directly from the OBD-II port.
- High-Speed OBD-II Data Access: Capture up to 100 data points per second from OBD-II PIDs, including crucial information like VIN and DTCs.
- MicroSD Card Storage: Built-in microSD card slot supports up to 32GB for extensive data logging.
- Battery Voltage Monitoring: Integrated voltmeter for real-time battery voltage readings.
- 9-Axis MEMS Sensor (MPU-9150): Includes accelerometer, gyroscope, compass, and temperature sensor for motion and environmental data.
- Dual Wireless Connectivity: BLE (Bluetooth Low Energy) and Bluetooth 2.1 for versatile communication with iOS and Android devices.
- 5Hz GPS Module: High-sensitivity GPS receiver with ceramic antenna for accurate location and speed tracking.
Freematics Vehicle Data Logger vs. Standard OBD-II Readers
Many generic OBD-II readers are available on the market, but the Freematics Arduino OBD2 logger offers significant advantages:
| Feature | Freematics Vehicle Data Logger | Bluetooth OBD-II Reader | WIFI OBD-II Reader |
|---|---|---|---|
| Programmable Micro-controller | Yes | No | No |
| Built-in Accelerometer & Gyro | Yes | No | No |
| Internal Mass Storage | Yes | No | No |
| Firmware Updating | Yes | No | No |
| Driving External Devices | Yes | No | No |
| Standalone Operation (No Phone/PC Required) | Yes | No | No |
| iOS Device Connectivity | Yes | No | Yes |
| Power Consumption | Low | Low | High |
As the table illustrates, Freematics goes beyond basic OBD-II reading. Its programmability, onboard sensors, and data storage capabilities unlock a wide range of applications not possible with simpler readers.
Unleashing the Potential: Use Cases for an Arduino OBD2 Logger
The Freematics Vehicle Data Logger is a versatile tool with numerous applications:
Autonomous Vehicle Data Logging: With OBD-II access, integrated GPS, and microSD storage, the Freematics logger functions as a complete, unattended vehicle data recorder. Capture driving routes synchronized with real-time vehicle parameters and sensor data for in-depth analysis.
Wireless Data Bridge: Act as a robust wireless bridge between your vehicle and software applications on smartphones or computers. Unlike basic Bluetooth OBD-II readers, Freematics can buffer and store data internally, preventing data loss even if the wireless connection is interrupted.
DIY Automotive Projects: For hobbyists and makers, the Freematics logger serves as a powerful foundation for custom automotive projects. Develop your own vehicle telematics system, performance monitoring tools, or even advanced driver-assistance systems (ADAS) by leveraging the Arduino platform and the logger’s rich feature set.
Fleet Management and Telematics: Businesses can utilize the Freematics logger for basic fleet tracking, driver behavior monitoring, and vehicle diagnostics. The combination of GPS, OBD-II data, and wireless communication makes it a cost-effective solution for telematics applications.
Visualizing vehicle tracking data on Google Earth, a potential application of the Freematics Arduino OBD2 Logger.
Explore the Possibilities with Freematics
The Freematics Vehicle Data Logger empowers you to explore the vast data landscape within your vehicle. Whether you are a car enthusiast, a DIY maker, or a professional in the automotive field, this Arduino OBD2 logger provides the tools and flexibility to unlock valuable insights and create innovative solutions.
