Arduino RTC and SD Card Data Logger Shield
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Prices updated: 12 Oct 2026
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About this product
A data logger shield for Arduino boards that combines an SD card slot with a real-time clock (RTC) that has battery backup. It is used to log sensor data with timestamps and includes a prototyping area for extra connectors or sensors. A 3.3 V regulator and level shifter support the SD card.
Specifications
- Storage
- SD card, up to 2 GB
- File system
- FAT16 / FAT32
- Real-time clock
- Yes, battery backup
- SD interface level
- 3.3 V with level shifter
- Onboard regulator
- 3.3 V
- Compatible boards
- Uno, Duemilanove, Diecimila, Leonardo, ADK/Mega R3 or higher
Frequently asked questions
Which Arduino boards does it work with?
The listing names Uno, Duemilanove, Diecimila, Leonardo and ADK/Mega R3 or higher. Check the listing for older Mega revisions before using it with them.
Does the clock keep time when the Arduino is unplugged?
Yes, the RTC runs from its backup battery. Set the time once using a time-setting example before relying on the timestamps.
