Digital Clock

What to do with a DVD player found in the trash? It really was damaged. But as the display was OK and was based on leds, the main idea was use it to make a digital clock.

The circuit was based on a PIC16F628 with 6.144000Mhz crystal. This frequency allows successive divisions until we reach 1Hz, that is the base time for the clock counters.

Also, implemented a display brightness control with PWM. The brightness can be changed manually or via software as the code is prepared to decrease it between 00:00am and 06:00am (time range in which the time is expected to be consulted while the environment is dark). This approach was followed in order to increase the battery life.

(click on the pictures to enlarge)

Video: