{"product_id":"gravity-gnss-gps-beidou-positioning-module-with-rtc-i2c-uart","title":"Gravity: GNSS GPS BeiDou Positioning Module with RTC - I2C\u0026UART","description":"\u003cdiv class=\"desCon\"\u003e\n\u003cp\u003e\u003cstrong\u003eDFROBOT DFR1103\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Gravity GNSS Positioning \u0026amp; Timing Module integrates satellite positioning functionality and a real-time clock (RTC). The module automatically obtains satellite time based on a preset calibration period and accurately calibrates the onboard RTC chip. This calibration effectively eliminates time errors caused by the RTC chip during extended operation or accidental situations.\u003c\/p\u003e\n\u003cp\u003eThe system automatically cuts off power to the GNSS chip after calibration, significantly reducing overall system power consumption compared to GNSS-only solutions. Additionally, the user has the option to use the module as a positioning module by setting GNSS active all the time， providing accurate longitude, latitude, time, altitude, and other data.\u003c\/p\u003e\n\u003cp\u003eThe module offers two data output types: I2C and UART. It is compatible with\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/topic-277.html\" target=\"_blank\" previewlistener=\"true\"\u003eArduino\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/topic-302.html\" target=\"_blank\" previewlistener=\"true\"\u003eESP32\u003c\/a\u003e,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/topic-272.html\" target=\"_blank\" previewlistener=\"true\"\u003eRaspberry Pi\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand other mainstream control devices. Ideal for scenarios requiring extended working hours and high-precision time, such as astronomical observation timers, NTP servers, and outdoor wireless sensor time synchronization.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThe differences between\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-2815.html\" target=\"_blank\" previewlistener=\"true\"\u003eGravity: GNSS Module with RTC Function\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-2651.html\" target=\"_blank\" previewlistener=\"true\"\u003eGravity: GNSS Receiver Module\u003c\/a\u003e:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eUnlike the traditional Gravity: GNSS GPS BeiDou Receiver Module - I2C\u0026amp;UART, which is a single GNSS module with high power consumption and is only suitable for outdoor scenarios, this Gravity: GNSS Module with RTC Function offers a significant improvement.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThe Gravity: GNSS GPS BeiDou Positioning Module with RTC Function\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003ehas the ability to turn off the GNSS when not in use, leaving only the RTC module to maintain time, resulting in\u003cspan\u003e \u003c\/span\u003e\u003cb\u003elower power consumption.\u003c\/b\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg alt=\"Connection Diagram of Gravity: GNSS Positioning Timing Module and DFRduino UNO R3\" title=\"Connection Diagram of Gravity: GNSS Positioning Timing Module and DFRduino UNO R3\" src=\"https:\/\/image.dfrobot.com\/image\/cache3\/data\/DFR1103\/1.png\" original=\"https:\/\/image.dfrobot.com\/image\/cache3\/data\/DFR1103\/1.png\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eFigure: Wiring Diagram of Gravity: GNSS Positioning Timing Module and DFRduino UNO R3\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Detection Results Display (Timing \u0026amp; Positioning)\" title=\"Detection Results Display (Timing \u0026amp; Positioning)\" src=\"https:\/\/image.dfrobot.com\/image\/cache3\/data\/DFR1103\/5.jpg\" original=\"https:\/\/image.dfrobot.com\/image\/cache3\/data\/DFR1103\/5.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eFigure: Positioning \u0026amp;Timing Results Display\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cdiv class=\"desCon\"\u003eIntegrated GNSS and RTC FunctionalityAutomatic Satellite Time CalibrationRTC Chip CalibrationPower EfficiencySatellite Signal Loss Mitigation\u003c\/div\u003e\n\u003ch4\u003eSpecification\u003c\/h4\u003e\n\u003cdiv class=\"desCon\"\u003eOperating Voltage: 3.3~5V DCOutput Signal: I2C\/UARTGNSS IC: L76KGNSS Accuracy: 2.0m CEPFirst positioning time: 30s (Cold start), 2s (Hot Start)Operation current:\u003cbr\u003e       GNSS enable: 46mA\u003cbr\u003e       GNSS chip off ＜1mAAntenna Interface: IPEX 1Antenna Frequency: 1561~1575.42MHz±3MHzRTC IC: SD3031Time range: Year 2000~2099Time Accuracy: ±3.8ppm @25℃PCB Size: 32mm*42mm\u003c\/div\u003e\n\u003ch4\u003eDocuments\u003c\/h4\u003e\n\u003cdiv class=\"desCon\"\u003e\n\u003ca href=\"https:\/\/wiki.dfrobot.com\/_SKU_DFR1103_Gravity_GNSS_Position_And_Timing_Module\" target=\"_blank\" previewlistener=\"true\"\u003eProduct wiki\u003c\/a\u003e\u003ca href=\"https:\/\/img.dfrobot.com.cn\/wiki\/62b2fb5caa613609f271523c\/349fe1581429b4d94a30ec2bb6ca2525.pdf\" target=\"_blank\" previewlistener=\"true\"\u003eSchematic\u003c\/a\u003e\u003ca href=\"https:\/\/img.dfrobot.com.cn\/wiki\/62b2fb5caa613609f271523c\/fbf22d786210f181f639a2ab818fe64e.jpg\" target=\"_blank\" previewlistener=\"true\"\u003eDimension \u0026amp; Layout\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch4\u003eShipping List\u003c\/h4\u003e\n\u003cdiv class=\"desCon\"\u003eGravity: GNSS Positioning \u0026amp; Timing module x1GPS \/ BeiDou Active Ceramic Antenna (IPEX1 Connector) x1Gravity 4P sensor cable x110 P connector x1\u003c\/div\u003e\n\u003c!----\u003e","brand":"DFROBOT","offers":[{"title":"Default Title","offer_id":42511489433711,"sku":"RR-4B-DFR1103","price":43.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0011\/6464\/0314\/files\/DFR1103.webp?v=1726875386","url":"https:\/\/rapidroboticsaustralia.com.au\/products\/gravity-gnss-gps-beidou-positioning-module-with-rtc-i2c-uart","provider":"Rapid Robotics Australia","version":"1.0","type":"link"}