The board came with LED's to indicate the seconds and another to indicate PM it also had output for a piezoelectric buzzer, you will notice that in some of the images might show parts that are not in this step, the reason is when I get stuck sometimes I move to tackle another part of the project until the pieces come together or an idea pops up and then I just pick up where I left off and continue.... In order to keep focused on the step at hand, I might show Images taken at a time further along in the build.....
with that all said as you will see in the images bellow I started with pulled parts from an old smoke detector and finished with a cool industrial looking sound and lighting feedback device thingy , read the captions in the images.....