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4.95 out of 5
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  • 27/07/2016

    Cost performance ratio is excellent. All 3 sensors arrived in good condition. But be aware: The HC-SR04 has a well-known bug (or is this really a feature???): The sensor can stuck after measuring our of range. It delivers zero distance values permanently, even if something is quite close. There is a software workaround: if (distance==0) { pinMode(echoPin, OUTPUT); digitalWrite(echoPin, LOW); pinMode(echoPin, INPUT); } // OR this one if (distance == 0 && digitalRead(ECHO_PIN) == HIGH) { pinMode(ECHO_PIN, OUTPUT); digitalWrite(ECHO_PIN, LOW); delay(100); pinMode(ECHO_PIN, INPUT); } } For more see here: https://forum.arduino.cc/index.php?topic=55119.45 https://bitbucket.org/teckel12/arduino-new-ping/issues/3/hc-sr04-sensor-get-stuck-at-zero

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  • 05/05/2021

    Excellent quality product.

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  • 09/05/2018

    I recommend it very useful and arrived in perfect condition.

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  • 14/02/2021

    Arrived in good condition and on time

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  • 29/04/2020

    Suoer

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  • 16/12/2018

    ممتاز جدا مفيده للاردوينيو

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  • 22/11/2018

    De acordo com as informações do anúncio.

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  • 27/09/2018

    I ordered these for a parking lot problem for a company, let's hope I need some more. For now, they'rrrrrrre grrreat! Everyone works fine, no problems. Heaps of tutorials online as well. Read the data sheet too, they are really simple, hook one up to a 555.

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  • 23/05/2018

    l ho montato su un F450 con Flight control F3...funziona bene devo perfezionare l alt/PID...per avere una risposta perfetta..vale la spesa

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  • 10/05/2018

    Bom sensor ultra-sônico para meus projetos

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