Distance Measuring Using UltraSonic Sensor and Arduino

In this project we are going to measure distance using ultrasonic sensor and the measured distance value will be displayed on computer screen.

We will be using Processing 3 software to display the distance on the compter screen.

For this project we need

• Arduino uno
• Ultrasonic sensor HC-SR04
• BreadBoard jumper wires

Theory Behind Measuring Distance

The Sensor works on the phenomenon of Echo of sound.

In order to generate the ultrasound you need to set the Trig on a High State for 10 µs. That will send out an 8 cycle sonic burst which will travel at the speed sound and it will be received in the Echo pin. The Echo pin will output the time in microseconds the sound wave traveled.

As speed of sound is 340 m/s (0.034 cm/us) we can calcute the received echo signal pulse duration and hence the formula for calculating distance is

Distance = (Echo pulse Duration) * 0.034 / 2

Dividing by two is done because the same wave is transmitted and received back

Connection Diagram

Arduino and Processing Code

Click on the link below to Download the code:
https://github.com/TinkerBuildLearn/UltraSonicSensor-Arduino/tree/master

Output

Social handle links

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