Hey folks, I'm new here and trying my best, but feeling a little overwhelmed, and hoping the community can help. I've been tinkering with electronics for about a year and a half now, and this is my first Arduino project.
A client contacted me looking for a cool way to show off his phone at conventions (he's an app developer). I remembered this article Keyless Lock Box - Make:, which uses an optical finger navigation (OFN) as a combination lock to move a servo motor, so I figured I could just modify the enclosure and the code just a little, and I'd be set. Easy!
Well, Parallax doesn't carry the OFN anymore, but since the original article mentioned the trackball (http://www.parallax.com/product/27908), I figured I could just substitute that in, and I'd still be set. Yeah, rookie mistake. The OFN sensor has one output to the Arduino, the trackball has four. So yeah, I'm a little lost.
I was able to find this: http://forum.arduino.cc/index.php/topic,200148.0.html, but I'm not really sure what they mean by displacement, and since there aren't any notes in the code, I'm a bit lost at what some of the code means.
I have read up on what a lot of the code means, but I haven't done any coding since I was doing BASIC programming back on my Atari 130XE. I'm not a dunce, I just new to this and need a little direction on how to get this module to work with the Arduino. Any help you can give is very appreciated.