Freematics Maker Store
Freematics Maker Store
We are specialized in the telematics field and this development board was designed with telematics features in consideration. It features an xBee socket with switchable VCC voltage (3.3V/5V) , so our 2G (SIM800) and 3G (SIM5360) bee modules will work on it to provide cellular network access. ESP32 provides 3 hardware serial UARTs, while the first/primary serial UART is connected to USB for uploading and debugging purpose, the second and third serial UARTs can be accessed from two onboard 4-pin connectors which our OBD-II adapter and GPS receiver can be hooked on. The 4 I/O pins exposed can also be configured as digital I/O, analog input or I2C purposes thanks to the flexible GPIO remapping design of ESP32. The onboard 4-pin I2C port can host an I2C OLED module directly.
Freematics ESPRIT leads out nearly all useful ESP32’s GPIO pins, arranged in a deliberated order, to balance between accessibility and Arduino compatibility.
In addition to standard Arduino pin headers, following extra interfaces are available.
In fact, ESP32’s GPIO pins are fully configurable so the above additional pinouts are just for default/recommended usage and literally they can be remapped for any I/O purposes.
The VCC switch toggles between 3.3V and 5V for VCC pins of both serial UART header and xBee socket. The VCC/GND pins on UART header can be used to power the board, for example by Freematics OBD-II UART adapter.
The standard xBee socket VCC voltage is 3.3V, however, as we have released a series of cellular network bee modules which require 5V input, the switchable VCC makes the modules work on the board as well. Schematic
Freematics ESPRIT is ideal for programming with ESP32 Arduino core. When developing with Arduino IDE or Platform IO, please choose ESP32 Dev Module as board type. We hate to add another entry in the board type list as there are already too many literally same variants. To unleash more power from ESP32, we are currently developing a dedicated library for our board, so resources like BLE and CAN can be easily accessed from Arduino sketches.
As a bonus, our Freematics Arduino Builder has built-in support for compiling and uploading for Freematics Esprit.
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Project Freematics was founded by Stanley Huang and Kevin Huang in 2013. Freematics stands for Free Telematics. The goal of Freematics is to bring freedom into vehicle telematics. Freematics makes it easier than ever to utilize open-source hardware (basically Arduino) in vehicle telematics projects which normally involve OBD-II, high-resolution GPS, motion sensor (accelerometer & gyroscope) and various wireless communication technologies (cellular, WIFI, BLE, xBee etc).
To archieve our goal, we have designed and manufactured a series of products which are mostly based on Arduino. In the past years, we have shipped our products to our customers all over the world.
We are committed to open-source and this makes us different from all other OBD-II device vendors. Actually we started from maker circle and DIY market. Our OBD-II Adapter for Arduino, which was our very first product, has been very popular among makers who want to DIY in-vehicle gadgets like tachometer, HUD, or even a performance box. That's why we have much presence in Maker Faire around the world.