[SOLVED] Ultrasonic ranger sensor showing the same value

michael_bush · July 3, 2017, 8:25pm

I have te same problem with my Grove Pi Ultrasonic Sensor. It has been working great since I started using at a week ago, but then yesterday it started reporting the same value over and over. I have rebooted the system several times, made sure the Raspberry Pi is properly seated, and installed a freshly charged battery pack. Nothing worked!

So, I just copied, pasted, and ran this code:

github.com

DexterInd/GoPiGo/blob/master/Software/Python/sensor_examples/grove_distance_sensor.py

#!/usr/bin/env python
#
# GoPiGo Example for using the Grove Ultrasonic Ranger (http://www.dexterindustries.com/shop/ultrasonic-sensor/)
#
# The GoPiGo is a robotics platform for the Raspberry Pi.  You can learn more about GoPiGo here:  www.dexterindustries.com/GoPiGo/
#
# Have a question about this example?  Ask on the forums here:  http://www.dexterindustries.com/forum/gopigo/
#
'''
## License

The MIT License (MIT)

GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
Copyright (C) 2015  Dexter Industries

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

This file has been truncated. show original

The software prints one “0” (zero) after the other.

Can I exchange the sensor?

Many thanks!

Cheers,

Mike

KrisManohar · July 4, 2017, 1:04pm

Hey I am also having issues with the ultrasonic sensor. I made a separate post here

http://forum.dexterindustries.com/t/ultrasonsic-sensor-issue/3296

RobertLucian · July 4, 2017, 3:29pm

Hi @michael_bush and @KrisManohar,

I have been testing out the Grove Ultrasonic Sensor in your given contexts and I haven’t had any problems.

I think these symptoms indicate faulty sensors, but first I need to talk to some people who know more on this issue: at the moment it’s 4th of July and they are not in the office at the moment.

We’ll be back ASAP to give you a resolution.

Thank you!

Michael_Bush1 · July 4, 2017, 4:53pm

That is my determination as well. They were working fine, then, suddenly, they did not work, despite having made zero changes to my code.

Many thanks!

Cheers,

Mike

RobertLucian · July 5, 2017, 12:59pm

Hi @Michael_Bush1 and @KrisManohar,

I think you both have defective ultrasonic sensors.

If you have bought the sensor from us, then please, go over to this page:
https://www.dexterindustries.com/contact/
Once you get to this page, head over to General Questions and Feedback section and explain your situation and what you need to have replaced.

Someone will contact you back for further details.

On the other hand, if you have bought the sensor from a reseller / distributor, then you have to ask them for a replacement.

Thank you!

RobertLucian · July 5, 2017, 1:01pm