Project: Example using a RTC to wake-up an Arduino Data Logger
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 can be run of a battery pack.
This video is to show how much power the project draws and how to integrate a NPN transistor to isolate components to even save more power
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