Ultra-sonic Range Finder -> Arduino -> RS232 -> Atari Computer
From the blog "Out of the Pack"
If capturing text from your Arduino to a terminal buffer is all you want to do, you are lucky. You may want to collect data and use it in your own programs. Unfortunately there are not a lot of example programs to learn from and the 850 interface manual can be cryptic for us mortals. Persistence does pay off. Usually the “let’s try this” style of debugging will eventually get you to the proper combination of port settings and program logic.
I wanted to hook up a sensor to the Arduino