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Ultrasonic Measuring Device:(for information on this sensor, click Things needed:- 1) Arduino 2) Ultrasonic Sensor(in this project HC SR04 model is used) Connections:- There are 4 pins on this Ultrasonic sensor. Connect VCC to arduino 5V GND to arduino GND ECHO to arduino pin 12 TRIGGER to arduino pin 13 [Note:- These sensor pins arrangement is for HC SR04 model. The pins may vary for some models.] Coding:- /* HC-SR04 Ping distance sensor] VCC to arduino 5v GND to arduino GND Echo to Arduino pin 13 Trig to Arduino pin 12 More info at: http://inlovetech.ucoz.com */ #define trigPin 13 #define echoPin 12 void setup() { Serial.begin (9600); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); } void loop() { long duration, distance; digitalWrite(trigPin, LOW); // Added this line delayMicroseconds(2); // Added this line digitalWrite(trigPin, HIGH); // delayMicroseconds(1000); - Removed this line delayMicroseconds(10); // Added this line digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance = (duration/2) / 29.1; if (distance >= 200 || distance <= 0){ Serial.println("Out of range"); } else { Serial.print(distance); Serial.println(" cm"); } delay(500); } |
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