Key Features RTK Express Plus can be used in two positions: GNSS Positioning (~30cm accuracy) and GNSS Positioning with RTK (1.4cm accuracy) Concurrent reception of GPS, GLONASS, Galileo and BeiDou Receives both L1C/A and L2C bands Built-in IMU (triple axis accel, triple axis gyro) Push button controls and an embedded OLED Display for available satellites, data logging, and more. The SparkFun RTK Express Plus is an easy to use GNSS receiver for centimeter-level positioning. Perfect for surveying, autonomous vehicles, logging, and all types of post processing, this preprogrammed device can also be used for autonomous driving, navigation, asset tracking and any other application where there is a clear view of the sky. The RTK Express Plus adds an internal IMU to combine real-time GNSS tracking with advanced sensor fusion. The result is accurate positioning even when GNSS is lost in tunnels, parking garages, etc. Out of the box an RTK Express Plus can be used with a correction source to create an RTK system capable of 14mm horizontal positional accuracy. The built-in Bluetooth® connection via an ESP32 WROOM enables the user to use the RTK Express Plus with their choice of GIS application on a phone or tablet. The built in battery allows for over five hours of field use and is compatible with common USB battery banks.The RTK Express Plus is built upon the ZED-F9R u-blox receiver which uses the same F9 engine as all Sparkfun RTK products but couples it with a built-in IMU. The embedded display allows for immediate feedback of horizontal positional accuracy, satellites in view, logging status, sensor fusion status, battery level, Bluetooth® MAC, etc. The rocker switches found on the original have been replaced by keypad buttons. We increased the battery to 1300mAh for a longer run time. The internal switches have been replaced by a digital mux allowing for some really exciting applications including event triangulation. More ESD protection was added to protect the RF path, and we even threw in an accelerometer for digital leveling in the field. Please note u-blox's sensor fusion algorithms are designed specifically for vehicles and will not aid in the accuracy of normal surveying.Item Specifics1 - SparkFun RTK Express Plus GNSS Receiver2 - Serial Telemetry Radio cablesMax Altitude: 50km (31 miles)Max Velocity: 500m/s (1118mph)Internal Battery: LiPo 1300mAh with 500mA chargingDevice Radio Port: 3.3V TTL Serial (57600bps RTCM TX/RX)Device Data Port: 3.3V TTL Serial (115200bps NMEA)Device Weight: 162g (includes battery)Device Size: 5.2in x 3.9in x 1.2inNote: The SparkFun RTK Express Plus is just the enclosed device and does NOT include an antenna, serial telemetry radio, or associated mounting pieces. These items will need to be purchased separately from the Hookup Accessories below.
