The Freematics Vehicle Data Logger is an Arduino-compatible, OBD-II compliant device designed for programmable data logging. It boasts features like an OBD-II data reader, high-resolution GPS, a 9-axis motion sensor, microSD storage, and a BLE wireless module, all accessible via Arduino libraries. This powerful tool evolved from a successful 2014 Kickstarter campaign. This article will guide you through understanding how this device functions as a powerful Arduino Obd2 Logger.
Freematics OBD-II Adapter
Key Features of the Freematics Arduino OBD2 Logger
This device offers a compelling array of features for anyone looking to build a robust OBD2 logging system:
- Arduino Compatibility: Leverage the extensive Arduino ecosystem and libraries for seamless integration and programming.
- Direct OBD-II Connection: Plugs directly into your vehicle’s OBD-II port for power and data access.
- Rapid Data Acquisition: Read up to 100 OBD-II PIDs (Parameter IDs) per second, including vital vehicle information like VIN (Vehicle Identification Number) and DTC (Diagnostic Trouble Codes).
- Onboard Storage: Utilize microSD cards up to 32GB for extensive data logging capabilities.
- Integrated Sensors: Monitor battery voltage with a built-in voltmeter and capture motion data with the MPU-9150 9-axis MEMS module (accelerometer, gyroscope, compass, and temperature).
- Wireless Connectivity: Connect to iOS and Android devices via BLE and Bluetooth 2.1 for real-time data monitoring and analysis.
- Precise Location Tracking: Integrate a 5Hz GPS module and ceramic antenna for accurate location data.
Programming the Arduino OBD2 Logger
The Freematics Vehicle Data Logger utilizes an ATmega328P microcontroller, identical to the Arduino UNO. This allows for easy programming using the standard Arduino IDE. Access OBD-II data and onboard peripherals through well-maintained Arduino libraries. Upload compiled sketches via ICSP (In-Circuit Serial Programming) using a USBasp programmer or an Arduino as ISP.
Comparing the Arduino OBD2 Logger to Other OBD-II Readers
The Freematics logger significantly differentiates itself from standard Bluetooth or Wi-Fi OBD-II readers:
| Feature | Freematics Vehicle Data Logger | Bluetooth OBD-II Reader | WIFI OBD-II Reader |
|---|---|---|---|
| Programmable Microcontroller | 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 |
| Requiring Smartphone or PC | No | Yes | Yes |
| iOS Device Connectivity | Yes | Limited | Yes |
| Power Consumption | Low | Low | High |
Applications of the Arduino OBD2 Logger
Visualizing vehicle data and routes with Google Earth.
This versatile device opens up a range of possibilities:
- Standalone Vehicle Data Logger: Record driving routes, vehicle performance data, and sensor readings without needing a constant connection to a phone or computer.
- Wireless Data Bridge: Seamlessly transfer data between your vehicle and software applications on smartphones or desktops, even with intermittent connectivity. Data caching ensures no data loss during disconnections.
Product Showcase
Here are some images of the Freematics Vehicle Data Logger:
The Freematics Vehicle Data Logger provides a powerful and flexible platform for building a customized Arduino OBD2 logger. Its extensive features, Arduino compatibility, and open-source nature make it an ideal solution for vehicle diagnostics, data analysis, and fleet management applications.
