Robotics : 26490


Robotics / 26490	26489 \| 26491

Subject:	NXT Ultrasonic reporting wrong values
Newsgroups:	lugnet.robotics, lugnet.robotics.nxt
Date:	Sun, 15 Oct 2006 13:32:05 GMT
Viewed:	5670 times

A just get my NXT, and everything works fine, but the ultrasonic sensor is not reporting correct values. No matter what distance or direction it is pointed, the readings changes quickly from 1 to 3 inches (3 to 7 cm) even if the sensor is completely stopped. This readings are from view mode of the NXT display. I did already try: Indors, outdors, Light and dark rooms, change the cable, the ports, etc. If anybody experienced this weird behaviour, please let me know... TIA Patrick Levy

Message has 3 Replies:

		Re: NXT Ultrasonic reporting wrong values
(...) I'm not sure what you mean by "completely stopped" - stationary? I suppose it's possible that you actually have a bad US sensor. If you can find someone with a working one, try swapping sensors with them and see if the problem is isolated to (...) (18 years ago, 15-Oct-06, to lugnet.robotics, lugnet.robotics.nxt)

		Re: NXT Ultrasonic reporting wrong values
(...) Is this sensor mounted on a robot? Make sure you don't have anything anywhere in front of the robot. Steve (18 years ago, 15-Oct-06, to lugnet.robotics.nxt)

		Re: NXT Ultrasonic reporting wrong values
(...) What I discover just now: If I press the light gray conector case behind the sensor case with my nail, it will report the correct values!! but when I release, it stop working again. It seems to be a bad contact inside the sensor. How can I fix (...) (18 years ago, 15-Oct-06, to lugnet.robotics, lugnet.robotics.nxt)

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