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Measuring RPM via Photo reflector
Computer
Interface
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Linebug by: entast.com Linebug is able to find and follow a 2-3cm thick black line drawn over a white surface. 4 IR sensors are housed in a black, plastic box and their signal levels are compared by 4 separate op-amps. Op-amp outputs are then fed into the microcontroller (PIC 16F870) and the micro drives two motors to enable the robot first find, and then follow the black line. Do you think Neons are only used in Tuned cars? (Auto tuning, power tuning, vinyl tuning etc.) Sure not! Here is our Linebug with its white Neons. Linebug is able to control its neons; can turn them on or off, can give them pulse effects with slow or fast changes, can fade in and fade out them or simply hold their intensity level constant.
Linebug, front view. As you can see, the box is a bit curved, though i didn't be able to find a suitable sized black box, i've made this by cutting and gluing two boxes. Via the 4 holes on the black box, you can see the 4 LEDs inside. When the sensor sees white, the LED is on.
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