![]() Return DistanceCalc // return calculated value DistanceCalc = time / 74 / 2 // Actual calculation in inches Long DistanceCalc // Calculation variableĭistanceCalc = ((time /2.9) / 2) // Actual calculation in mm ((time)*(Speed of sound))/ toward and backward of object) * 10 Serial.print("Distance = ") // Output to serialĭelay(1000) // Wait to do next measurement Long Distance_mm = Distance(Duration) // Use function to calculate the distance PinMode(EchoPin,INPUT) // Echo is an input pinĭigitalWrite(TriggerPin, HIGH) // Trigger pin to HIGHĭigitalWrite(TriggerPin, LOW) // Trigger pin to HIGHĭuration = pulseIn(EchoPin,HIGH) // Waits for the echo pin to get high PinMode(TriggerPin,OUTPUT) // Trigger is an output pin How To Install Arduino Code //For more Projects: const int TriggerPin = 8 //Trig pin if you Learn How to install the Arduino step-by-step guide then click on how to install Arduino Button given Blow Installing Arduino IDE Softwareįirst, you will require to Download the updated version of Arduino IDE Software and Install it on your PC or laptop. Where time is the time it took for the sound wave to travel to the object and back, and the speed of sound is approximately 343 meters per second. This time is then used to calculate the distance between the sensor and the object using the following formula: The time it takes for the sound wave to travel to the object and back is calculated by the Arduino. The Echo pin on the sensor then sends a signal back to the Arduino. The sound wave travels through the air and bounces off of an object. This pulse triggers the sensor to send out an ultrasonic sound wave. To use the sensor, the Arduino sends a 10-microsecond pulse to the Trig pin. The Trig pin is connected to a digital output pin on the Arduino, and the Echo pin is connected to a digital input pin on the Arduino. The VCC and GND pins are connected to the 5V and GND pins of the Arduino respectively. The HC-SR04 ultrasonic sensor has four pins: VCC, GND, Trig, and Echo. The Echo pin then receives the reflected sound wave, and the sensor calculates the distance based on the time it took for the sound wave to travel back and forth. When the Trig pin is set to high, the sensor emits an ultrasonic pulse, which bounces off an object and returns to the sensor. It requires a minimum of four pins to connect to an Arduino board: two for power (VCC and GND) and two for communication (Trig and Echo). ![]() ![]() The sensor has a range of up to 400 cm, and it operates at a frequency of 40 kHz. It is easy to use, affordable, and provides accurate distance measurements. The HC-SR04 sensor widely uses in robotics, automation, and other projects where distance measurements require. The sensor composes of an ultrasonic transmitter, which sends out a high-frequency sound wave, and a receiver, which receives the sound wave after it bounces off an object. The HC-SR04 Ultrasonic Sensor is a popular distance-measuring sensor that uses sound waves to determine the distance between the sensor and an object. To learn How to Wiring HC-SR04 Ultrasonic Sensor with Arduino, you will need the following components Components In this tutorial, we will show you how to use the HC-SR04 ultrasonic sensor with an Arduino. By knowing the speed of sound and the time it took for the sound wave to bounce back, the distance between the sensor and the object can be calculated. It works by sending out a sound wave at a frequency above the range of human hearing and then timing how long it takes for the sound wave to bounce back. In this project, we are learning Wiring HC-SR04 Ultrasonic Sensor with Arduino, The HC-SR04 ultrasonic sensor is a popular sensor that is used to measure distance.
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