Example for testing all board features.

1- Potentiometer value is shown in 7 segment display;
2- LCD prints seconds value from main code counter and the DS1307;
3- Swiches values are printed on LCD when Pressed;
4- Switch 'S' turn on buzzer via PWM;
6- RGB led is flashin (pins are multiplexed with other componentes);
7- Serial port in Ecco mode (send what ir receive);