This project is to give a practical example of using power save modes with Arduino's. It uses a Real Time Clock (RTC) to wake up an Arduino Data Logger. It write the temperature and humidity in a room to a micro SD card. It is optimized for saving power thus can run of a battery pack.
Read MoreIf you need to run your Arduino of a battery pack, you need to find a way to reduce it's power consumption. One of the the best ways to do this is putting your Arduino to sleep when it is not performing any tasks. This tutorial is a great place to start on learning how to put your Arduino to sleep.
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