Tom, I must congratulate you on a nicely written Arduino application. As you demonstrate, it's not critical what hardware gets used. The feedback/hysteresis loop in the program is nicely documented. It begs to be used.
Your design is much like mine. I was going to use tube stock rather than build it. The bearings are remarkably cheep, though. I found them for $$7bux. >From a simplicity point of view, building it from bicycle parts is as common as you can get. Have fun, Norm _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb