Arduino Ultrasonic Sensor Distance Measurement Code

Thakur the hc sr04 ultrasonic sensor is a very affordable proximity distance sensor that has been used mainly for object avoidance in various robotics projects.

Arduino ultrasonic sensor distance measurement code.

The circuit diagram for arduino and ultrasonic sensor is shown above to measure the distance. It sends an ultrasonic wave of a certain frequency that comes back after hitting the object and calculates the time traveled by it. It is simply based on using the echo. Ultra sonic sensor is a device which is capable of transmitting and receiving ultra sonic sound waves out into the air and calculates the distance from the sensor to the obstacle by making use of the time required for the sound wave to reach back the sensor.

Distance measurement using ultrasonic sensor hc sr04 and arduino may 13 2016 arduino tutorials arduino code distance hc sr04 measurement meter sensor ultrasonic manoj r. It offers excellent non contact range detection with high accuracy and stable readings in an easy to use package from 2 cm to 400 cm or 1 to 13 feet. Here we are using a high precision hcsr 04 ultrasonic sensor module for the arduino based distance measurement. Trig pin 13 digital pin echo pin 12 digital pin out gnd gnd.

The ultrasonic sensor is consists of transmitter and receiver modules. Ultrasonic sensors not only offer distance measuring utility without any physical contact but enable us to measure with no noise and light unlike laser based distance measuring instruments. Breadboard and jump wires. An ultrasonic distance measurement is a non contact distance ranging technique.

Distance measurement using arduino ultrasonic sensor is a very easy project to measure shorter distance precisely. So let s learn about distance measurement using arduino hc sr04 ultrasonic sensor. Two sensors for measuring distance with the arduino are extremely popular. The ultrasonic sensor measures the distance of the nearest object sending the result to the serial port.

That is calculating the distance by analysing the time required for the propagation of sound waves. They work in similar ways and achieve pretty much the same thing but it s important to pick the right sensor for the environment you re in. A 16x2 lcd is connected with arduino in 4 bit mode. It acts as a sonar.

The ultrasonic sensor is used to measure the distance. In circuit connections ultrasonic sensor module s trigger and echo pins are directly connected to pin 18 a4 and 19 a5 of arduino. Ultrasonic sensor arduino circuit diagram and explanation. It measures the time spent by the signal to reach the object and return to the sensor.

Before getting started you must know about ultrasonic sensor hc sr 04 which is a low cost sensor. What is ultrasonic sensor. Check this project using oled display. The hc sr04 ultrasonic sensor uses sonar to determine the distance of an object just like the bats do.

It can work from 2 cm to 3 m. Vcc 5 v.