This is a self sufficient Arduino board, which is powered by harnessing solar power and using a 9V rechargeable battery. It is perfect for anyone who is interested in doing Arduino projects that do not require a computer or any power supply. You can take this to the most remote places for any project.
What you will need:
9V Rechargeable battery
Solar cells (About 11V)
100uf 10V capacitor
9V battery connector
Power connector (to connect to the Arduino board)
Step 1: Setting up the Arduino board
This is probably the simplest step (please use the schematic as reference for wiring before doing anything else).
Change the jumper of the Arduino board to "EXT"