Start with a clock...
Howdy, then go after something interesting... TEXT. I built my first ceiling fan text display in '03 (monochrome, color in '05). When blade sweep matches text sweep, fairly trivial. When opposite, Not Trivial. Next throw in real lower case descenders... if that doesn't stretch some gray matter, thou art a better man than I. See attached time-lapsed images. Video recorded sequences alias out as blades being static... too funny.
Software accounts for rotation direction & speed, including speed changes (direction chg req's power down {duh}). Changes message & colors on # rotations as programmed by a VisualBasic Windows app. Upload is by RF, 32 characters upper & lower, 16 messages, 24 colors, limited by ram in uCs available in '04.
A fun project, wish I had time to pursue/improve/market it. The "cab3" image is a portable/suitcase version that is its' own stand and folds up into a triangular case. The blade attached is the one with all the circuitry.
P.M. me if you are a valid & interested candidate for taking this over as a project, I simply don't have time. I can work with someone, but not lead. TNX <<<)))
P.S. this not intended to be a solicitation OR a thread hijack, but I've been sitting on it for 7+ years. It's stupid to not make it available to an interested, valid concern. <<<)))