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

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

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

Excellent quality product.

Produto de qualidade excelente.

Excellent quality product.

I recommend it very useful and arrived in perfect condition.

I recommend it very useful and arrived in perfect condition.

I recommend it very useful and arrived in perfect condition.

Arrived in good condition and on time

تم الوصول بحالة جيدة وفي الوقت

Arrived in good condition and on time

Suoer

Suoer

Suoer

ممتاز جدا مفيده للاردوينيو

ممتاز جدا مفيده للاردوينيو

ممتاز جدا مفيده للاردوينيو

De acordo com as informações do anúncio.

De acordo com as informações do anúncio.

De acordo com as informações do anúncio.

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.

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.

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.

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

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

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

Bom sensor ultra-sônico para meus projetos

Bom sensor ultra-sônico para meus projetos

Bom sensor ultra-sônico para meus projetos