{"product_id":"arduino-data-logger-shield-with-rtc-and-sd-card-slot","title":"Arduino Data Logger Shield with RTC and SD Card Slot","description":"\u003ch1\u003eArduino Data Logger Shield with DS1307 RTC and microSD Slot\u003c\/h1\u003e\n\n\u003cp\u003eThe Arduino Data Logger Shield enables precise time-stamped data logging to a microSD card. It integrates a DS1307 real-time clock (RTC) for accurate timekeeping and an SPI-based SD card interface. Simply stack it onto your Arduino Uno or Mega to start capturing sensor data, GPS coordinates, or event logs with minimal wiring.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRTC Chip\u003c\/td\u003e\n\u003ctd\u003eDS1307\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSD Card Support\u003c\/td\u003e\n\u003ctd\u003emicroSD up to 32 GB, FAT16\/FAT32\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRTC Battery\u003c\/td\u003e\n\u003ctd\u003eCR1220 coin cell (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eI2C (RTC), SPI (SD card)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V (supplied by Arduino)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e68.6 x 53.4 mm (standard Arduino shield)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eWeather station with temperature, humidity, and pressure logging\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp32-gps-tracker-kit-build-a-live-tracking-dashboard\"\u003eGPS tracker that records coordinates to SD card\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/pm2-5-air-quality-monitor-kit\"\u003eLong-term indoor air quality monitor\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eEvent counter with timestamped entries\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis shield is designed for 5V Arduino boards with standard header layout, including Uno, Mega 2560, and Leonardo. The RTC uses the I2C pins (A4\/SDA, A5\/SCL), and the SD card occupies the SPI bus (D10–D13). Ensure pin 10 is set as output in your code for SD functionality. The shield includes a pass-through stacking header for additional modules.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eStack the shield directly onto the Arduino. Insert a CR1220 battery in the holder to maintain RTC time when power is off. Use Arduino’s SD and RTClib libraries for quick integration. No external wiring is needed.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the shield is fully compatible with Arduino Uno R3 and later. It aligns with Uno’s pinout and uses I2C on A4\/A5 and SPI on D10–D13.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the shield include a battery for the RTC?\u003c\/summary\u003e\u003cp\u003eNo, the CR1220 coin cell battery is not included; you’ll need to purchase one separately for RTC backup.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum SD card capacity supported?\u003c\/summary\u003e\u003cp\u003eThe shield supports microSD cards up to 32 GB formatted as FAT16 or FAT32, which is sufficient for most data logging applications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53444946821485,"sku":"CDN-0070","price":150.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_2d12e008-9967-48af-aa2d-14922db3ac29.jpg?v=1781512141","url":"https:\/\/compoden.com\/products\/arduino-data-logger-shield-with-rtc-and-sd-card-slot","provider":"Compoden","version":"1.0","type":"link"}