Kate Hollenbach / MAS.863 How to Make (almost) Anything

For my final project, I'll need a few "rows" of LEDs that are all the same color. My idea is to have two people standing at opposite ends of a table, and to have the table show their heartrates reaching toward each other from opposite ends of the table. The table will have a semi-transparent surface with rows of RGB LEDs underneath. Each row can be set to a different color, so this week I wanted to make a network that would allow me to set the color of an RGB LED over a network.

I modified the internet0 sample board to use an RGB LED instead of a single color light. Here is what the design looks like (and the relevant cad file):

The board design required the use of a ATTiny44 microcontroller with an external 20MHz crystal. However, I wasn't able to program it (as documented on the class mailing list). So I wasn't able to test my board before class today -- I hope it works.