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Greg edited this page Oct 24, 2018 · 12 revisions

Welcome to the Arduino-Data-logger-with-RTC-SD-card-OLED-display wiki!

Arduino-Data-logger-with-RTC-SD-card-OLED-display

This code is for an Arduino pro-mini connected to:

  • A real time clock DS3231 (RTC) module (I2C interface).
  • A SD card reader (with SPI interface).
  • an SSD1306 OLED display (I2C interface)

The systems monitors the changes of state of an digital pin (#2) of the Arduino, and writes time and date of each change to the SD card (file "data.txt"). It is also possible to set the time and date of the RTC using a special file on the SD card ("setdate.txt"). Finally, the OLED display shows the time of each change of the input pin.

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