electronics design
hello echo board design

HelloEcho
Using Eagle, I designed the 'helloecho' board with the added led and tactile button -- see "files" section below for the files.

HelloEcho traces
The milling went fine... no problems.

HelloEcho : top
After much ado, I was finally able to program the board. Apparently, I thought that I had to run the bootloader again -- in actuality, I did not.

HelloEcho : with LED

HelloEcho : button = up => LED = off

HelloEcho : button = down => LED = on