Ultrasonic sensor, strange reading

#1

I have purchased a Starter kit and additional two ultrasonic sensors.

I have setup a test program that is running fine and the ultrasonic sensor that comes with the starter kit displays the reading in centimeters correctly.

But when I attached the two additinal sensor i bought, they dont behave as expected.
I just swapt the sensors without changing code or port.
but the reading goes dont to something like 0.522 when it should be something like 19,132

All three is V3 sensors.
I have tried to reset default program and update firmware.
I am using windows and program version 3.4.11

I cannot see any damage, bad solderings or broken parts on the sensors.
Are these sensors known to have issues?

bad%20reading
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good%20reading
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#2

This specific module should be faulty if it always changes between 0 and 1. You may turn to the shop for warranty service.

#3

Yes it is jumping between different values between 0 and 1.
I will contact shop for.

thank you

#4

I have just purchased an mbot ranger kit for my students and I’m following this to test the sensor. I get the distance reading while I’m connected with USB. I would like to keep the reading on the stage for a particular project. I replace the hat with Auriga and updated the firmware (with some additional code for sensing), then the sensor distance reading is lost? Does anyone know if I can still get the sensor reading when disconnected from USB. This is all very knew to me!

#5

Hi RPPS,
In order to let panda say out the value, we have to keep computer/mBlock connected with the robot so as to run online program. There are these methods:

  1. USB connection, supports update, reset, upload, and run online program;
  2. Bluetooth module +makeblock bluetooth dongle, supports upload program and run online program;
  3. 2.4G (included module and dongle), supports run online program only;
  4. Try mBlock 5 latest version which may support some computer built-in Bluetooth adapter (with ranger Bluetooth), supports run online program only; this method can refer to this post.

If you have other electric module like tft lcd display or segment-display, they can show value.

#6

Many thanks tech support. I will try these options and let you know how I go.

#7

Sure, no problem.

#8

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