Lesson 12: Ultrasonic Ranging - Elecrow Raspberry Pi & Arduino Starter Kit User Manual

Application effect
Running the program will cause the step motor to turn one step, then 20 steps, then quarter turn and at the end
stop. You can change the interval of the step motor to make it move slower or faster.
LESSON 13: ULTRASONIC RANGING
Introduction
In this lesson we'll learn about the ultrasonic ranging sensor.
The ultrasonic is probably most favourable sensor in the market, it opens loads of opportunities to develop
applications in many different areas from Robotics to IoT and even smart city!
The Ultrasonic ranging sensor is able to sense the range from point 0 (the sensor location) to the object standing in
front of it, it can sense up to 5 meters ahead.
In this lesson we'll learn how to control the ultrasonic sensor and measure the distance of to the object in front of
our sensor.
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