Arduino Data Logger Shield with RTC and SD Card Slot
Arduino Data Logger Shield with DS1307 RTC and microSD Slot
The 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.
Key Specifications
| Specification | Value |
|---|---|
| RTC Chip | DS1307 |
| SD Card Support | microSD up to 32 GB, FAT16/FAT32 |
| RTC Battery | CR1220 coin cell (not included) |
| Communication Interface | I2C (RTC), SPI (SD card) |
| Operating Voltage | 5V (supplied by Arduino) |
| Dimensions | 68.6 x 53.4 mm (standard Arduino shield) |
What You Can Build With This
- Weather station with temperature, humidity, and pressure logging
- GPS tracker that records coordinates to SD card
- Long-term indoor air quality monitor
- Event counter with timestamped entries
Compatibility
This 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.
Wiring Notes
Stack 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.
Why Buy from Compoden
Every 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.
Is this compatible with Arduino Uno?
Yes, 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.
Does the shield include a battery for the RTC?
No, the CR1220 coin cell battery is not included; you’ll need to purchase one separately for RTC backup.
What is the maximum SD card capacity supported?
The shield supports microSD cards up to 32 GB formatted as FAT16 or FAT32, which is sufficient for most data logging applications.
📦 Free Setup Handoff Document Included
Every 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.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items