You can see a bigger version of this photo on our Flickr page. Generates a sequence of pulses that can be used to measure how much the mouse has moved. As the heavy rubber ball moves, it makes the wheel turn, so its spokes break the beam. On the other side, there's a photoelectric cell (light detector) that LED (light emitter) that generates an infrared beam. Photo: A ball mouse detects movements by using a wheel with spokes
#LITTLE DISC BY THE MOUSE SOFTWARE#
Software in your computer moves the cursor on Sends details down the cable to your computer. The counting and measuring is done by the microchip inside the mouse, which The number of times the beam is broken is a way of precisely measuring how far the wheel has turned and The more the wheel turns, the more times the beam is broken. Up of plastic spokes and, as it turns, the spokes repeatedly break a light beam. And if you move the mouse at an angle, the ball Up, only the y-axis wheel turns if you move to the right, only the How do the wheels measure distance?Īs you move the mouse, the ball moves the rollers that turn one or both of the wheels. Y-axis on graph/chart paper) the other detects side-to-side movements (like the x-axis on graph paper). One of the wheels detects movements in an up-and-down direction (like the
Thin wheels (numbered 6 and 7 in the photo). Rolls under its own weight and pushes against two plastic rollers linked to How does a mouse like this actually work? As you move it across your desk, the ball
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