A hardware and software interface for sensing changes in rotary position with an Apple II microcomputer |
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| Authors: | Frank Schieber Charles W Snyder |
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| Institution: | 1. Psychology Department, Oakland University, 48063, Rochester, MI
2. Psychology Department, University of Notre Dame, 46556, Notre Dame, IN
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| Abstract: | A design for an Apple II interface that senses relative rotary position and/or motion via a digital potentiometer is presented. A thorough discussion of the circuit’s theory of operation and a fully commented BASIC software listing are included. Suggested applications include an infinite-turn rotary device for psychophysical methods of adjustment, the sensing of rotary translations of a steering wheel in a driving simulator, and a digital tachometer/odometer for tracking performance on stationary exercise bicycles and treadmills. |
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