How far exactly HC-SR04 can detect?

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1

Hi everybody,

I am a new and trying to learn Arduino programming. Now, I'm working on "detecting obstacle" so I'm looking for parts. The require is detecting the obstacle between 50cm to 300cm, so the sensor that names HC-SR04 will work well or if any better recommendation for me!?

Thanks!!

2

According to the datasheet - http://www.micropik.com/PDF/HCSR04.pdf -

Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm.

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