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Topic: How far exactly HC-SR04 can detect? (Read 938 times) previous topic - next topic


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!?



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.

quick google  - http://trollmaker.com/article3/arduino-and-hc-sr04-ultrasonic-sensor - ( don't look if you want to learn it yourself )
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

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