I've followed examples using NewPing and ones that don't ... I've rewired many times. No matter what I do, I get zero back. Wondering if it's the sensor or the code? can anyone help? I've used the code here http://playground.arduino.cc/Code/NewPing#Example and tried this code: /* HC-SR04 for A…

Thanks for the response John! I am really wondering if the sensor is bad.. This is my first time using one Susan

Ok, another question about this... How do I know for sure it's the sensor?

Which Arduino are you using? Have you checked the voltage of the supply to the sensor? The HC-SR04 requires a solid 5V to work reliably, in my experience.

Not sure how to test the voltage... now I have a second sensor with the same results ... any other ideas? I have the UNO 3,

Ok .. I finally figured it out ... I followed this post http://samwedge.co.uk/2012/08/29/ultrasonic-sensor-takes-too-long-when-no-objects-are-within-range/ and changed my code like he suggests .. then suddenly the sensor works

Hello Susan, I found your post from notifications that I get when people click links to my website. I am glad that my ramblings helped! Since it was the timeout that was the issue, can I suggest that you use the NewPing library that is available from the Arduino website? This takes a third paramet…

the solution to the sensor being stuck at zero is in this link. its the 2. post, by docdoc. You will need the NewPing library which is far better. A working code: #include <NewPing.h> #define TRIGGER_PIN 12 #define ECHO_PIN 11 #define MAX_DISTANCE 200 NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_D…

Try connecting your VCC of the sensor to 3V3 instead of 5V. This might sound odd (or not), but I tried it and it worked! I think 3V is enough,actually. And if it works, let me know.Also, please make sure your code's right :wink:

Hello, I followed the code in post #10. What do I need to change in order to display the distance in higher accuracy? As far as I know, this sensor has higher resolution than 1cm. Changing unsigned int uS = sonar.ping(); to double uS = sonar.ping(); does not work.

Same here, I'm using the NewPing library, and the sensors are not working(getting constant 0s). Tried connecting it to 3V3, but that makes the sensor give off garbage values(1149cm). What I observed is that I have to snap my fingers once, to get the sensor started; and when there is a sudden chang…

HC-SR04 always returns zero

Other Hardware Sensors

Azduino May 1, 2016, 2:31pm 17

Hi Ardu-weenie.

If really "I have Vcc from HCSR04 to Arduino GND" you won't get anything for sure!

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HC-SR04 always returns zero

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