SPI interface, 3.3V/5V compatible, FAT16/FAT32
| Format | FAT16 / FAT32 |
|---|---|
| Voltage | 3.3-5V (onboard regulator) |
| Card type | Micro SD / SDHC |
| Interface | SPI |
Add data logging, configuration file storage, or audio file playback to any Arduino or ESP32 project. This SPI-based module supports Micro SD and SDHC cards formatted as FAT16 or FAT32, with an onboard 3.3V regulator making it 5V Arduino compatible.
Combine with a DS3231 RTC module and DHT22 sensor for a timestamped temperature/humidity data logger — log readings every minute to CSV on the SD card, readable directly in Excel. Classic engineering project with real commercial applications in cold chain monitoring and environmental compliance logging.
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