Freematics ONE+ is our most powerful Arduino programmable vehicle telematics prototyping platform, an enhanced yet compatible version of Freematics ONE.
Freematics ONE+, like its predecessors, is in form of a OBD-II dongle which plugs directly into a car’s OBD-II port and works as a standalone small-footprint yet powerful micro-controller which has access to a variety of data from vehicle ECU, high accuracy GPS receiver, 9-DOF motion sensor. Large amount of collected data can be processed in real-time, stored in Flash memory or microSD card and transmitted by BLE, WIFI or over cellular network.
Freematics ONE+ plugs into the OBD port usually located under the steering column or slightly to the left of it. To check if your vehicle is OBD-II certified, open your hood and find the sticker that looks like this:
Vehicles using following vehicle protocols are supported.
Freematics ONE+ supports accurate geolocation positioning with an external GPS receiver with a connector of Molex 4-pin one. M8030 10Hz GPS provides high accuracy (up to 2 meters) and high update rate (10Hz). The receiver has a 1.5m long cable and is convenient to be placed where well exposed to open sky.
Cellular Network Module
Freematics ONE+ has an xBee socket inside to provide the possibility of extending wireless communication capability with various bee modules. We have designed and provide 3 types of cellular network modules working perfectly with Freematics ONE+. Please be noted that xBee socket uses 5V VCC instead of normal 3.3V due to the efficiency consideration for powering cellular modules. Following chart compares the 3 types of cellular modules currently available.
|Power Consumption||2W @ 850/900MHz
1W @ 1800/1900MHz
|0.25W @ UMTS 900/2100
2W @ GSM850/GSM900
1W @ DCS1800/PCS1900
|0.25W @ UMTS 850/1900
2W @ GSM850/GSM900
1W @ DCS1800/PCS1900
|Popular Regions||Worldwide||Europe, Asia, Japan*, Australia*||US, Canada, Japan*, Australia*|
* Countries including Japan and Australia have both 3G bands in operation by different operators. Complete information is here.
When cellular network module included, Freematics ONE+ comes with built-in antenna inside enclosure. It works great in most cases. To improve cellular network signal level in areas with poor coverage, there is an option of external antenna connected via a SMA connector which can boost signal by 4-8dB and significantly reduce the heat generated by the working network module.
Freematics ONE+ enters and leaves low power mode programmatically. In low power mode with all peripherals (GPS, GSM, WIFI) powered off, the power consumption is around 10mA. This prevents car battery from going flat while the main controller is still able to run code and perform low-power tasks like motion detection by MEMS sensor.
The schematic is here.
The most exciting thing about this product is that you can create your own unique product or solution on top massive accomplished work. We have been developing and maintaining a dedicated Arduino library and a fully functional reference Arduino sketch for this product. Together with our free Freematics Hub telematics server software and Freematics Arduino Builder, we intend to bring the best out-of-box experience for novice developers. If you are a pro, we highly recommend PlatformIO IDE as development environment and our reference code is organized as a PlatformIO projects, though you can still use Arduino IDE or Arduino makefile with ESP-IDF. For more related information, please refer to the Developers Guide.
|Freematics ONE+||Freematics ONE|
|Programmable Processor||32-bit Dual-Core ARM @ 240Mhz||8-bit AVR MCU @ 16Mhz|
|Real-time Operating System||FreeRTOS (multi-threading)||N/A|
|Development Environment||Platform IO, Arduino IDE etc.||Platform IO, Arduino IDE etc.|
|Arduino Library Features||OBD-II/GPS/MEMS access,
networking, data storage, BLE GATT server
|WIFI||Built-in 802.11 b/g/n (SDK)||Optional by ESP8266 module (AT-command)|
|Bluetooth||Built-in BLE+BT (SDK)||Optional by CC2541 module (serial)|
|High Update Rate GPS||Direct serial access (UART2)||By proxy|
|xBee Module||Direct serial access (UART1)||By proxy|
|Program Space||4MB or 16MB Flash + 520KB RAM||32KB Flash + 2KB RAM|
|Data Storage||microSD or built-in Flash||microSD|
|Device LED||GPIO driven + communication indicator||Communication indicator|
|Suitable Applications||Real-time processing and logging for massive data sampled at high rate, low-latency data transmission with various protocols over BLE, WIFI & cellular network||Local data logging and simple data transmission over BLE or WIFI|