{"product_id":"gravity-i2c-ds1307-rtc-module","title":"Gravity: I2C DS1307 RTC Module","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eDFROBOT DFR0151\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eGravity I2C DS1307 \u003c\/span\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.dfrobot.com\/category-232.html\" data-mce-href=\"https:\/\/www.dfrobot.com\/category-232.html\"\u003eRTC module\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e is an easy-to-use Real Time Clock module. It is cheap and affordable in most applications such as time clock, data logger, etc. The new version DS1307 RTC module adopts a high precision crystal oscillator which reduces time error dramatically. The test conducted shows the time error is only about 1 second in 24 hours (the average time error of Mechanical Watches is about 20s). The module is powered by single cell CR1220 (service life: 3~5 years). It is smaller and keeps EEPROM 4KB ROM to record information related to alarm clocks and events. Besides, you can set the I2C address by resistance adjustment. The Gravity DS1307 RTC module uses the Gravity I2C interface and you can plug it on the DFRobot Gravity IO expansion shield directly. Cooperate with the Arduino DS1307 library developed by DFRobot, it is easy to realize functions like setting time and time display. It can be widely used in DA (Data Acquisition).\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNote: According to the latest Air Transport Regulations, the batteries, magnets, and liquids transport will be very stringent, so the cell battery CR1220 will not come with the module anymore. Please buy it from the local supermarket.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSPECIFICATION\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv class=\"desCon\"\u003e\n\u003cul\u003e\n\u003cli\u003eOperating voltage: 5V\u003c\/li\u003e\n\u003cli\u003eInterface: I2C (Gravity PH2.0-4P Interface \u0026amp; XH2.54 Pins)\u003c\/li\u003e\n\u003cli\u003eIC Output Data: Hour, Minutes, Seconds, Week, Day, Month, Year\u003c\/li\u003e\n\u003cli\u003eLeap-year Compensation\u003c\/li\u003e\n\u003cli\u003eAccurate calendar up to year 2100\u003c\/li\u003e\n\u003cli\u003e1Hz Output Pin\u003c\/li\u003e\n\u003cli\u003e56 Bytes of Non-volatile memory available to user\u003c\/li\u003e\n\u003cli\u003e4KB ROM of EEPROM\u003c\/li\u003e\n\u003cli\u003eSize: 0.81inch x 1.06inch (22mm x 27mm)\u003c\/li\u003e\n\u003cli\u003eWeight: 6g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003ePROJECTS\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv class=\"desCon\"\u003eProject 1.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/blog-550.html\" target=\"_blank\"\u003eHyduino - Automated Hydroponics with an Arduino\u003c\/a\u003e\u003cbr\u003ehydroponics is growing plants without the use of a traditional dirt medium by using a nutrient rich water solution. This is especially great for those people that that have limited areas in their backyard to grow in.\u003cbr\u003eHardware list:\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-655.html\" target=\"_blank\"\u003eArduino Mega 2560\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.dfrobot.com\/product-1698.html\" target=\"_blank\"\u003ePeristaltic Pumps\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e(2)\u003c\/li\u003e\n\u003cli\u003eRegular Pump\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-1110.html\" target=\"_blank\"\u003epH Electrode Probe and Connection to Arduino\u003c\/a\u003e\u003c\/li\u003e\npH Up\/Down Solution\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-1572.html\" target=\"_blank\"\u003e5V Relay Modules for Arduino\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e12V Solenoid Valve\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-174.html\" target=\"_blank\"\u003eDHT11 or DHT21 or DHT22 Humidity\/Temperature Sensor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-1004.html\" target=\"_blank\"\u003ePhotosensitive Sensor for Arduino\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-371.html\" target=\"_blank\"\u003eBreadboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/category-44.html\" target=\"_blank\"\u003eVarious Wires\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"http:\/\/www.ebay.com\/itm\/290971663290\" target=\"_blank\"\u003eGrow Lights\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e(mine are LED)\u003c\/li\u003e\n\u003cli\u003eSockets for Grow Lights\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.dfrobot.com\/product-1413.html\" target=\"_blank\"\u003e3.2\" TFT LCD Shield\u003cspan\u003e \u003c\/span\u003e\u003c\/a\u003e+\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-1414.html\" target=\"_blank\"\u003eTouch Screen\u003cspan\u003e \u003c\/span\u003e\u003c\/a\u003e(usually has an SD card reader on the back of it)\u003c\/li\u003e\n\u003cli\u003eWater Level Sensor Float Switch (2)\u003c\/li\u003e\n\u003cli\u003eI2C RTC DS1307 AT24C32\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-879.html\" target=\"_blank\"\u003eReal Time Clock Module\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e9V and\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/product-736.html\" target=\"_blank\"\u003e12V\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ePower Supplies\u003c\/li\u003e\n\u003cli\u003eHydroponics Pots (I'm using 10 - 3\" pots for this)\u003c\/li\u003e\n\u003cli\u003e1\" PVC Pipe and Fittings + Drain Pipe and Fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eProject 2. \u003ca href=\"https:\/\/www.dfrobot.com\/blog-1268.html\"\u003eHow to Monitor the Home Temperature\u0026amp;Humidity with BME680\u003c\/a\u003e\u003c\/p\u003e\nDesign Idea: Take DFRduino UNO R3 as the controller and DS1307 as a clock. Then BME680 Environmental Sensor collects environment data and pass it to UNO. Finally, UNO input data to SD card that received from the sensor in every second.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\nMaterials List:\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e1.\u003ca href=\"https:\/\/www.dfrobot.com\/product-838.html\"\u003eDFRduino UNO R3 - Arduino Compatible\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ex1\u003c\/li\u003e\n\u003cli\u003e2.\u003ca href=\"https:\/\/www.dfrobot.com\/product-1009.html\"\u003eGravity IO Expansion Shield for Arduino V7.1\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ex1\u003c\/li\u003e\n\u003cli\u003e3.\u003ca href=\"https:\/\/www.dfrobot.com\/product-879.html\"\u003eGravity: I2C DS1307 RTC Module\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ex1\u003c\/li\u003e\n\u003cli\u003e4.\u003ca href=\"https:\/\/www.dfrobot.com\/product-1697.html\"\u003eGravity: I2C BME680 Environmental Sensor\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ex1\u003c\/li\u003e\n\u003cli\u003e5.\u003ca href=\"https:\/\/www.dfrobot.com\/product-875.html\"\u003eMicroSD card module for Arduino\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ex1\u003c\/li\u003e\n\u003cli\u003e6.\u003ca href=\"https:\/\/www.dfrobot.com\/product-1190.html\"\u003eSD\/MicroSD Memory Card (8 GB Class10 SDHC)\u003cspan\u003e \u003c\/span\u003e\u003c\/a\u003ex1\u003c\/li\u003e\n\u003cli\u003e7.7.4v Lithium Battery x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eDOCUMENTS\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv class=\"desCon\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/wiki.dfrobot.com\/Gravity__I2C_DS1307_RTC_Module_SKU__DFR0151\" target=\"_blank\"\u003eProduct wiki\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/DFRobot\/DS1307_RTC\/raw\/master\/Schematic%20\u0026amp;%20Layout.pdf\" target=\"_blank\"\u003eSchematic \u0026amp; Layout\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/DFRobot\/DFRobot_DS1307\" target=\"_blank\"\u003eDFRobot DS1307 RTC Library\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/DFRobot\/DS1307_RTC\" target=\"_blank\"\u003eDFRobot DS1307 RTC Repostory\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/www.lucadentella.it\/en\/2013\/11\/27\/rtcsetup\/\" target=\"_blank\"\u003eTime Synchronization with Computer\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eSHIPPING LIST\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv class=\"desCon\"\u003e\n\u003cul\u003e\n\u003cli\u003eGravity: I2C DS1307 RTC Module x1\u003c\/li\u003e\n\u003cli\u003eGravity-4Pin I2C\/UART Cable x1\u003c\/li\u003e\n\u003cli\u003eXH2.54-5P Pin Header x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"DFROBOT","offers":[{"title":"Default Title","offer_id":41121799733359,"sku":"RR-4B-DFR-DFR0151","price":7.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0011\/6464\/0314\/files\/DFR0151_1.png?v=1726876185","url":"https:\/\/rapidroboticsaustralia.com.au\/products\/gravity-i2c-ds1307-rtc-module","provider":"Rapid Robotics Australia","version":"1.0","type":"link"}