This Design Idea combines a simple ISA-bus-resident interface circuit; a garden-variety PC; a high-resolution optical shaft encoder; and a PWM-controlled, 0.05-hp, brushed, permanent-magnet dc motor ...
A black and white paper made from a piece of printer paper and a sharpee pen are used to create the optical encoder as it keeps track of the current location by using an IR emitter and detector. A ...
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