![]() The delay is used to get clear output on the serial monitor. Using this command you can print the distance value on your serial monitor window. This is the formula for Distance Calculation. The function pulseIn is read the ultrasonic wave receive by the sensor receiver and store this value in the variable duration. This is used to generate ultrasonic wave for 10 microseconds from the sensor transmitter. Then, set the trig pin High for 10 microseconds and again set the trig pin Low. This function starts serial communication, at 9600 bits of data per second, between your board and your computer with the line.Īt the starting of the loop, set the trig pin low for Clears the trig Pin for 2 microseconds. That will read the output from your Sensor, Initialize Arduino digital pin 10, as an INPUT. That will provide input voltage to the trig pin for generating ultrasonic sound waves from Transmitter. ![]() Initialize Arduino digital pin 11, as an OUTPUT. It is declared your Ultrasonic sensor trig pin connected to Arduino pin “D11” and named as trigpin and echo pin connected to Arduino pin “D10” and named as echopin.ĭefine two variables, these are duration and distance Here we will describe the code line by line for your better understanding. Ultrasonic Sensor Arduino Code /* interfacing ultrasonic sensor with Arduino In this way, Arduino measures distance using the Ultrasonic sensor. Where the speed of sound in Air is around 340 meters/second or 0.034cm/µs. Then Arduino calculate the distance between the sensor and object by a simple formulaĭistance= (Ultrasonic wave travel time x Speed of sound)/2 Now the Arduino read the time duration between triggering and Receiving the wave by the sensor. When the receiver receives the wave then the Eco pin provides high output. ![]() Then the ultrasonic wave reflects back from the object surface to the receiver part. If any object comes in front of the sensor detection range. How Arduino Measure Distance using Ultrasonic SensorĪt first, We need to trigger the ultrasonic Sensor for 10 microseconds to generate ultrasonic wave from the transmitter part. The following table represents the pin connection between the Ultrasonic sensor and Arduino. Ultrasonic Sensor with Arduino Schematic-Circuit Diagram Circuit Wiring Ultrasonic Sensor with Arduino Circuit Diagram The Echo pin is connected to another digital pin of Arduino and sets this pin as an Input to read the output value from the Ultrasonic sensor. Then connect the Trig pin to a digital pin of Arduino and set this pin as an output to generate ultrasonic waves from the transmitter. How to Connect Ultrasonic Sensor with Arduinoįirst of all, we need to connect the Vcc pin to the Arduino 5v pin and the GND pin is connected to the Arduino ground (GND) pin, to activate the sensor. Ultrasonic Sensor Pin Diagram Ultrasonic Sensor HC-SR04 Pin Diagram/Pinout/Pin Configuration For More Details: Ultrasonic Sensor Module-HC-SR04 | How it’s Works ![]() Components Required Components NameĪrduino UNO ((you can use other types of Arduino like Arduino NANO, MEGA, pro mini, etc) Then print the measuring distance on the Serial Monitor window of the Arduino IDE. When any object or obstacle comes in front of the sensor then the sensor measure distance between the object or obstacle and it. Using this project we can easily understand how the ultrasonic sensor works. In this project, we are going to make a distance measuring device using the ultrasonic sensor and Arduino, which can measure distance in the range of 2 cm to 400 cm. How Arduino Measure Distance using Ultrasonic Sensor.How to Connect Ultrasonic Sensor with Arduino.
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