Using the HC-SR04 Ultrasonic Range Sensor with an Arduino - Tutorial

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In this tutorial we will connect and use the HC-SR04 ultrasonic sensor with the UNO to calculate distances.

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hi .. in my case the sensor dont work thi distance greater than 90 cm.. why?

ubergeekinterativa
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Would it be possible to use this sensor to detect if an object is present within it's field of view (Within 3 feet) and if so turn on/off a relay switch?

aliabdel
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Hi there, the links of your page do not work, so please, could you upload it again the files?

eliezercocoletzi
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It gives me an error :( :
#include <NewPing.h>

^

compilation terminated.

exit status 1
Error compiling for board Arduino/Genuino Uno.

TechnicGear
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I love you thanks for the tutorial I paid money on Udemy and they teach like shit

jacobmufasa