The Data Logger Shield for Arduino Uno & Mega is a plug-on expansion board that gives your Arduino the ability to record sensor data locally to an SD card, with each entry stamped with the current date and time from the onboard Real-Time Clock. This combination — storage plus time reference — is what makes it genuinely useful for field data collection, environmental monitoring, and STEM-based arduino projects where continuous data recording is needed without a PC connection.
The shield works by using the Arduino’s SPI bus to communicate with both the SD card slot and the RTC chip. The onboard 3.3V regulator handles the lower voltage requirement independently, which keeps the circuit clean and avoids the common problem of instability when powered directly from a 5V line. Compatibility covers Data Logger Shield for Arduino Uno & Mega boards, making it a versatile shield across the most common Arduino platforms used in colleges, labs, and hobbyist projects.
Students working on environmental science projects, engineers prototyping, IoT sensor nodes, and makers building weather stations or energy monitors will find this shield a practical starting point. StemVolt stocks this module for learners and developers who need reliable, standalone data recording without complex hardware setup.
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Checkout the Multi-Function Expansion Shield for Arduino
Features:
- Onboard RTC timestamps every logged sensor entry with date and time
- SD card FAT16 FAT32 support stores unlimited sensor data files
- 3.3V onboard regulator powers SD card without external components needed
- SPI shared bus keeps pin usage minimal on Arduino IO headers
- Compatible with Arduino Uno R3 and Mega R3 plug-and-play shield format
Technical Specifications:
| Specification | Details |
|---|---|
| Shield Type | Data Logger Shield |
| Compatible Boards | Arduino UNO R3, Mega R3 |
| Voltage Input | 5 V |
| Onboard Voltage Regulator | 3.3 V (SD Card Power) |
| SD Card Interface | FAT16 / FAT32 Supported |
| Real-Time Clock | Onboard RTC for Date and Time Stamping |
| Communication Interface | SPI (Shared Bus) |
 Applications:
- Data Logger Shield used for long-term temperature humidity sensor recording
- College project uses data logger arduino shield for environmental data collection
- Weather station uses data logger shield for Arduino CSV file logging
- Industrial sensor monitor uses arduino data logger shield for timestamped records
- Field data logger uses arduino uno and mega shield for portable recording
Package Includes:
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1 x Data Logger Shield for Arduino Uno & Mega














Mohit Chettija –
Integrated SD card and built-in Real-Time Clock make data recording easy and accurate for engineering projects and long-term monitoring applications.
Ritesh Soni –
Reliable data logger shield
Aarav Bhandari –
Verified seller product