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Hall-effect spinner circuit | by anachrocomputer
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Hall-effect spinner circuit

First draft of a circuit for connecting a CD-ROM motor to an Arduino so that it acts as a rotary sensor. I want to make it into a spinner control, rather like those which are used to control video playback. Normally, the Hall-effect sensors are connected to the motor driver chip and control the commutation. I've wired them to a comparator chip (TLC3704) and then to the Arduino.

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Uploaded on January 29, 2009