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UltrasonicRangefinder

v9	v10
3	3	Robots need to sense the environment around them, particularly when driving autonomously. Ultrasonic sensors are like the sonar used by bats. [[Image(UltrasonicSensor.jpg,right,250px,margin=10)]] They emit a chirp of sound and measure the time it takes to hear an echo of that chirp. The longer the time, the further the sound traveled. Since sound travels at a particular speed (about 1125 ft/s) through air, we can use the echo delay to calculate distance to the object was that reflected the sound. You can read more about ultrasonic sensors on [https://wpilib.screenstepslive.com/s/currentCS/m/java/l/599715-ultrasonic-sensors-measuring-robot-distance-to-a-surface ScreenStepsLive]
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5		Ultrasonic sensors are connected to the RoboRIO using DIO ports. In the example below, a sensor's Ping/Trig and Echo wires are connected to DIO8 and DIO9 respectively.
	5	Ultrasonic sensors are connected to the RoboRIO using DIO ports. In the example below, a sensor's !Ping/Trig and Echo wires are connected to DIO8 and DIO9 respectively.
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7	7	Create another program using the !TimedRobot java template and name it !UltrasonicTest. Modify the auto-generated template code as follows: