The sun is shining for free out there so why not to use it at least to charge the cell phone. I’ve searched cheep but usable solar panel for this purpose and tested it. Specification[…]
Month: October 2014
Simple Low Voltage Disconnect Circuit for Arduino
I have read several forums regarding the disconnecting the Arduino power from the Lithium Ion battery by itself (measuring the battery voltage and when the low limit is reached the Arduino signal turns off itself).