Arduino Boards & Compatibles

Arduino Data Logging Shield V1.0 – RTC DS1307 + SD Card Slot for UNO / Mega

The Arduino Data Logging Shield V1.0 is the ultimate add-on board for any Arduino enthusiast, student, or engineer looking to capture and store sensor data with precise timestamps. Designed to stack directly onto Arduino Uno, Leonardo, and similar R3-compatible boards, this shield combines a full-size SD card slot with a battery-backed Real-Time Clock (RTC DS1307) in a single compact module. With the built-in 3.3V level shifter circuitry, the shield safely interfaces with SD cards formatted in FAT16 or FAT32, ensuring reliable, high-speed read/write operations without damaging the card. The RTC keeps accurate date and time running even when the Arduino is unplugged — thanks to the CR1220 coin cell backup that lasts for years. This makes the shield ideal for environmental monitoring, weather stations, temperature/humidity logging, plant watering trackers, energy monitoring, and any project where you need to record data at regular intervals over long periods. This shield is supplied as a DIY kit with through-hole components that require basic soldering (typically under 1 hour). The kit includes the PCB, RTC DS1307 IC in DIP package, full-size SD card slot, CR1220 battery, header pins, resistors, capacitors, LEDs, and voltage regulator — everything you need to build a fully functional data logger. Compatible libraries and example sketches (RTClib, SD library) are available from the Arduino community, making it easy to get your first data log up and running within minutes. For Mega 2560 users, the shield can be used with proper SPI pin mapping — note that the standard V1.0 shield routes SPI on digital pins 11–13; on a Mega you may need to connect the ICSP header or use jumper wires for full compatibility. Whether you are building a solar-powered remote weather station, logging soil moisture for smart agriculture, or recording temperature fluctuations in an incubator, the Arduino Data Logging Shield V1.0 gives you reliable, timestamped data storage at an affordable price. Available now at TecnoMate — the smart choice for Indian makers and STEM students.