{"product_id":"sparkfun-rtk-facet","title":"SparkFun RTK Facet","description":"\u003cp\u003eDesigned and manufactured in Boulder, Colorado, USA, the SparkFun RTK Facet is your one stop shop for high precision geolocation and surveying needs. For basic users, itâ��s incredibly easy to get up and running and for advanced users, the RTK Facet is a flexible and powerful tool. With just a few minutes of setup, the RTK Facet is one of the fastest ways to take centimeter grade measurements. By connecting your phone to the RTK Facet over Bluetooth�®, your phone can act as the radio link to provide correction data as well as receive the NMEA output from the device. This is exactly how $10,000 surveying devices have been operating for the past decade - we just made it easier, smaller, and a lot more economical.\u003c\/p\u003e \u003cp\u003eUnder the hood of the SparkFun RTK Facet is an ESP32 WROOM connected to a ZED-F9P as well as some peripheral hardware (LiPo fuel gauge, microSD, etc). Additionally, housed under the dome of the RTK Facet is a surveyor grade L1\/L2 antenna. It is the same element found within our GNSS Multi-Band L1\/L2 Surveying Antenna. The built in antenna has an ARP of 61.4mm from the base to the measuring point of the L1 antenna and an ARP of 57.4mm to the measuring point of the L2 antenna. The RTK Facet is programmed in Arduino and can be tailored by you to fit whatever your needs may be.\u003c\/p\u003e \u003cp\u003eThis device can be used in four modes:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eGNSS Positioning (~30cm accuracy) - also known as 'Rover'\u003c\/li\u003e \u003cli\u003eGNSS Positioning with RTK (1.4cm accuracy) - also known as 'Rover with RTK Fix'\u003c\/li\u003e \u003cli\u003eGNSS Base Station\u003c\/li\u003e \u003cli\u003eGNSS Base Station NTRIP Server\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eAt \u003cem\u003ePower On\u003c\/em\u003e the device will enter Rover or Base mode; whichever state the device was in at the last power down. When the POWER\/SETUP button is pressed momentarily, a menu is presented to change the RTK Facet to Rover or Base mode. The display will indicate the change with a small car or flag icon.\u003c\/p\u003e \u003cp\u003eIn \u003cem\u003eRover mode\u003c\/em\u003e the RTK Facet will receive L1 and L2 GNSS signals from the four constellations (GPS, GLONASS, Galileo, and BeiDou) and calculate the position based on these signals. Similar to a standard grade GPS receiver, the RTK Facet will output industry standard NMEA sentences at 4Hz and broadcast them over any paired Bluetooth�® device. The end user will need to parse the NMEA sentences using commonly available mobile apps, GIS products, or embedded devices (there are many open source libraries). Unlike standard grade GPS receivers that have 2500mm accuracy, the accuracy in this mode is approximately 300mm horizontal positional accuracy with a good grade L1\/L2 antenna.\u003c\/p\u003e \u003cp\u003eWhen the device is in \u003cem\u003eRover mode\u003c\/em\u003e and RTCM correction data is sent over Bluetooth�® or into the radio port, the device will automatically enter Positioning with RTK mode. In this mode RTK Facet will receive L1\/L2 signals from the antenna and correction data from a base station. The receiver will quickly (within a second) obtain RTK float, then fix. The NMEA sentences will have increased accuracy of 14mm horizontal and 10mm vertical accuracy. The RTCM correction data is most easily obtained over the Internet using a free app on your phone (see SW Maps or Lefebure NTRIP) and sent over Bluetooth�® to the RTK Facet but RTCM can also be delivered over an external cellular or radio link to a 2nd RTK Facet setup as a base station.\u003c\/p\u003e \u003cp\u003eIn \u003cem\u003eBase mode\u003c\/em\u003e the device will enter Base Station mode. This is used when the device is mounted to a fixed position (like a tripod or roof). The RTK Facet will initiate a survey. After 60 to 120 seconds the survey will complete and the RTK Facet will begin transmitting RTCM correction data out the radio port. A base is often used in conjunction with a second RTK Facet (or RTK Surveyor) unit set to 'Rover' to obtain the 14mm accuracy. Said differently, the Base sits still and sends correction data to the Rover so that the Rover can output a really accurate position. Youâ��ll create an RTK system without any other setup.\u003c\/p\u003e \u003cp\u003eIn addition to supplying position data the RTK Facet is capable of logging NMEA, RAWX, and SFRBX for post processing making it ideal for research and advanced positioning applications.\u003c\/p\u003e \u003cp\u003eThe RTK Facet is an open source hardware product meaning you can fully obtain, see, and even modify the \u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/0\/e\/8\/3\/a\/SparkFun_RTK_Facet_-_Main_Schematic.pdf\"\u003eelectrical\u003c\/a\u003e and \u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_RTK_Facet\"\u003emechanical\u003c\/a\u003e design files. This allows for easier maintenance and repair over time.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The SparkFun RTK Facet is just the enclosed device with thread adapter, charger, and data cables. It does NOT include serial telemetry radio or associated mounting poles. These items will need to be purchased separately.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The SparkFun RTK Facet is not designed for permanent outdoor mounting. Please use the \u003ca href=\"https:\/\/www.sparkfun.com\/products\/17751\"\u003eL1\/L2 antenna\u003c\/a\u003e (which we've had outside constantly for nearly 2 years in Colorado UV) with a cable running to the \u003ca href=\"https:\/\/www.sparkfun.com\/products\/18443\"\u003eRTK Surveyor\u003c\/a\u003e, or for a cheaper solution, the \u003ca href=\"https:\/\/www.sparkfun.com\/products\/15663\"\u003eESP32\u003c\/a\u003e attached to our \u003ca href=\"https:\/\/www.sparkfun.com\/products\/16481\"\u003eZED-F9P breakout\u003c\/a\u003e is a great way to go. See our \u003ca href=\"https:\/\/learn.sparkfun.com\/tutorials\/how-to-build-a-diy-gnss-reference-station\/all\"\u003eHow to Build a DIY GNSS Reference Station\u003c\/a\u003e tutorial for more information.\u003c\/p\u003e \u003cp\u003e\u003c\/p\u003e\u003cdiv class=\"center-block text-center\"\u003e \u003ca href=\"https:\/\/learn.sparkfun.com\/tutorials\/2188\" class=\"btn btn-default\"\u003eGet Started With the SparkFun RTK Facet Guide\u003c\/a\u003e \u003c\/div\u003e \u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e1x SparkFun RTK Facet\u003c\/li\u003e \u003cli\u003e1x \u003ca href=\"https:\/\/www.sparkfun.com\/products\/17546\"\u003eAntenna Thread Adapter - 1\/4in. to 5\/8in.\u003c\/a\u003e\n\u003c\/li\u003e \u003cli\u003e1x \u003ca href=\"https:\/\/www.sparkfun.com\/products\/17240\"\u003eBreadboard to GHR-04V Cable - 4-Pin x 1.25mm Pitch\u003c\/a\u003e\n\u003c\/li\u003e \u003cli\u003e1x \u003ca href=\"https:\/\/www.sparkfun.com\/products\/17239\"\u003eGHR-04V to GHR-06V Cable - 1.25mm pitch\u003c\/a\u003e\n\u003c\/li\u003e \u003cli\u003e1x \u003ca href=\"https:\/\/www.sparkfun.com\/products\/15425\"\u003eReversible USB A to C Cable - 0.8m\u003c\/a\u003e\n\u003c\/li\u003e \u003cli\u003e1x \u003ca href=\"https:\/\/www.sparkfun.com\/products\/16893\"\u003eUSB Wall Charger - 5V, 2A\u003c\/a\u003e\n\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eOverall Device\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eEnclosed Facet Design IP53 - Protected from limited dust ingress and water spray\u003c\/li\u003e \u003cli\u003eInternal Antenna: L1\/L2 with â�¥5dBi gain\u003c\/li\u003e \u003cli\u003eInternal Battery: LiPo 6Ah with fast 1 amp charging\u003c\/li\u003e \u003cli\u003eRadio Port: 3.3V TTL Serial (57600bps RTCM TX\/RX)\u003c\/li\u003e \u003cli\u003eData Port: 3.3V TTL Serial (115200bps NMEA)\u003c\/li\u003e \u003cli\u003e\n\u003ca href=\"https:\/\/www.sparkfun.com\/qwiic\"\u003eQwiic\u003c\/a\u003e Port: Supports I2C based add-on devices\u003c\/li\u003e \u003cli\u003emicroSD: Compatible up to 32GB\u003c\/li\u003e \u003cli\u003eEmbedded OLED Display for positional accuracy, available satellites, data logging, etc.\u003c\/li\u003e \u003cli\u003eSingle push button control\u003c\/li\u003e \u003cli\u003eWeight: 583g (1.3 lbs)\u003c\/li\u003e \u003cli\u003eDimensions: 136mm x 146mm x 80mm (5.35in x 5.74in x 3.14in)\u003c\/li\u003e \u003cli\u003eOpen Source Hardware Certified Project\u003c\/li\u003e \u003cli\u003eManufactured in Boulder, CO USA\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eGNSS Receiver: ZED-F9P\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eConcurrent reception of GPS, GLONASS, Galileo and BeiDou\u003c\/li\u003e \u003cli\u003eReceives both L1C\/A and L2C bands\u003c\/li\u003e \u003cli\u003e184-channel u-blox F9 engine\u003c\/li\u003e \u003cli\u003eCurrent: 68mA - 130mA (varies with constellations and tracking state)\u003c\/li\u003e \u003cli\u003eTime to First Fix: 25s (cold), 2s (hot)\u003c\/li\u003e \u003cli\u003eMax Navigation Rate: \u003cul\u003e \u003cli\u003ePVT (basic location over UBX binary protocol) - 25Hz\u003c\/li\u003e \u003cli\u003eRTK - 20Hz\u003c\/li\u003e \u003cli\u003eRaw - 25Hz\u003c\/li\u003e \u003c\/ul\u003e\n\u003c\/li\u003e \u003cli\u003eHorizontal Position Accuracy: \u003cul\u003e \u003cli\u003e2.5m without RTK\u003c\/li\u003e \u003cli\u003e0.010m with RTK\u003c\/li\u003e \u003c\/ul\u003e\n\u003c\/li\u003e \u003cli\u003eMax Altitude: 50km (31 miles)\u003c\/li\u003e \u003cli\u003eMax Velocity: 500m\/s (1118mph)\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eBluetooth�® Transceiver: ESP32 WROOM\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eXtensa�® dual-core 32-bit LX6 microprocessor\u003c\/li\u003e \u003cli\u003eUp to 240MHz clock frequency\u003c\/li\u003e \u003cli\u003e4MB of flash storage\u003c\/li\u003e \u003cli\u003e520kB internal SRAM\u003c\/li\u003e \u003cli\u003eIntegrated 802.11 BGN WiFi transceiver\u003c\/li\u003e \u003cli\u003eIntegrated dual-mode Bluetooth�® (classic and BLE)\u003c\/li\u003e \u003cli\u003eHardware accelerated encryption (AES, SHA2, ECC, RSA-4096)\u003c\/li\u003e \u003cli\u003e2.5 �µA deep sleep current\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eDocuments:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eSchematics: \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/0\/e\/8\/3\/a\/SparkFun_RTK_Facet_-_Main_Schematic.pdf\"\u003eMain Board\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/6\/1\/5\/f\/0\/SparkFun_RTK_Facet_-_Display_SD_Schematic.pdf\"\u003eDisplay Board\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/d\/2\/a\/b\/0\/SparkFun_RTK_Facet_-_External_Connector_Schematic.pdf\"\u003eConnector Board\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/learn.sparkfun.com\/tutorials\/2188\"\u003eHookup Guide\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.sparkfun.com\/qwiic\"\u003eWhat is Qwiic?\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.sparkfun.com\/gps\"\u003eBuilding a GNSS System\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.sparkfun.com\/rtk_surveyors\"\u003eLearn More About RTK Surveyors\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_RTK_Firmware\"\u003eGitHub Firmware Repo\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_RTK_Facet\"\u003eGitHub Hardware Repo\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/a\/8\/5\/f\/5\/ZED-F9P-04B_DataSheet_UBX-21044850.pdf\"\u003eZED-F9P Datasheet\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003eOpen Source Certified Hardware: US002064\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003c\/p\u003e\u003cdiv class=\"center-block text-center\"\u003e \u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/c\/5\/8\/2\/1\/OSHWA_-_SparkFun_RTK_Facet_2064.png\"\u003e\u003cimg src=\"https:\/\/cdn.sparkfun.com\/assets\/c\/5\/8\/2\/1\/OSHWA_-_SparkFun_RTK_Facet_2064.png\" alt=\"Open Source Certified Hardware: US002064\"\u003e\u003c\/a\u003e \u003c\/div\u003e \u003cp\u003e\u003cstrong\u003eVideos\u003c\/strong\u003e\u003c\/p\u003e \u003cdiv class=\"flex-video-wrap clearfix\"\u003e \u003cdiv class=\"flex-video widescreen img\"\u003e \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-0vlPDOZx7A\/?autohide=1\u0026amp;border=0\u0026amp;wmode=opaque\u0026amp;enablejsapi=1\" frameborder=\"0\" allowfullscreen width=\"560\" height=\"315\"\u003e\u003c\/iframe\u003e \u003c\/div\u003e \u003c\/div\u003e","brand":"sparkfun-10","offers":[{"title":"Default Title","offer_id":40054682386517,"sku":"19029:GPS-19029:spark","price":114375.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1034\/1611\/products\/RTK_Facet_Photos-01.jpg?v=1651341729","url":"https:\/\/www.tanotis.com\/products\/sparkfun-rtk-facet","provider":"Tanotis","version":"1.0","type":"link"}