This is an Aids To Navigation (ATON) display demonstration board I made, there are flashing LED’s to demonstrate selected ATON’s in the Elliot Bay area around Seattle Washington.
There are 27 Aids represented from just south of the Alki Lighthouse to the Shilshole Marina. The chart is about 24 inches square.
I used a Basic Stamp II from Parallax to drive a selection of LED’s to demonstrate selected Aids to Navigation.
Why did I use a Basic Stamp II which has been around for several years and not the latest fancy computer? I had the Basic Stamp left over from many years ago when I was going to teach myself how to program small microcomputers. The BS II only has 16 output lines and I at first did not think it would work for this project, a few emails with the Tech folks at Parallax and they explained about the 74HC595 Serial to Parallel Shift Register to expand the number of outputs.