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5t4nd1ng @ th3 3dg3 0f 5p3ct4t10n!
Give a child a toy and they're happy for an hour.
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Our PING)))™ ultrasonic sensor provides an easy method of distance measurement. This sensor is perfect for any number of applications that require you to perform measurements between moving or stationary objects. Interfacing to a microcontroller is a snap. Source: Parallax.com
Have the students figure out the speed of the chip, the speed of the sensor, the round-trip time of flight from the UltraSonic to the target. They already know the distance from the sensor to the target as a reference. Looking up data sheets online and digging out the info and doing the math makes for a middle-school level of research (reverse enginnering.) |