Originally Posted by
Wax-um
Im toying with a new project of using POV on a car wheel to write text or image while car wheel is rotating. For simplicity reasons I want to prototype with a stand alone power supply such as battery and some sort of device to measure wheel speed "all componets mounted to hub cap or center cap". Im using PBP and 16f877A.
My concerns are finding a way to measure the wheel speed interegrated into hub cap or center cap that doesnt require any sensors mounted to car at all. The other concern is will the wheel spin fast enough for the eye to catch the image????
I posted a small post on this earlier about the wheel speed sensor but thought I should elaberate more.
OK I see what you are wanting to do. Have you seen those wheels that look as if they are not turning when they are and spin when they stop? a weighted magnet free to spin on the hub rotating around with a reluctor and coil should give you the signal you need.
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