How to Add MicroSD Storage to Arduino UNO for Long-Term Data Logging

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Arduino UNO's limited internal memory makes it unsuitable for projects requiring extended data storage, such as weather stations or soil-monitoring systems. A MicroSD card module connected via the SPI interface offers a practical solution, allowing the board to read and write files on an external memory card. The module typically includes a 3.3V voltage regulator and logic-level conversion circuitry to ensure compatibility with Arduino's 5V logic. An I2C-connected 16x2 LCD can also be paired with the setup to display information retrieved from the card. The project relies on Arduino's built-in SD and SPI libraries, along with the third-party LiquidCrystal_I2C library for the display.

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Agentic Design System sandeep kumar patel Sep 19 Add Comment 1 min read

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