Hi Donald,
The technical consumer service team at LEGO Education should be able to help you. For the phone number and hours, see this link:
https://education.lego.com/en-us/support
Hope that helps! Please let us know if you need further assistance.
Best regards,
Sonya
From: First Lego League in Virginia and DC <[log in to unmask]>
On Behalf Of Donald Williams
Sent: Thursday, June 6, 2019 2:13 PM
To: [log in to unmask]
Subject: [EXTERNAL] Re: [VADCFLL-L] Help with NXT light and sound sensors
It turns out that I looked at this and determined the problem to some certainty:
Using a volt meter, and checking pins 3 and 4 with the robot ON, I was able to tell that there was no voltage going to the sensor. I set the screen to "View" > sensor > port # and checked the voltage. On a good robot, I get near 4.5V. On
my suspect robot, I get 0.02V.
Have any of you ever repaired a problem such as this?
Just sharing my experience with you, and looking for next step.
I haven't used the robots for a while and when I get them out, and I can write programs and load the programs onto 12 robots. 11 of the robots work fine, but one won't recognize the light or sound sensor. It recognizes a touch sensor. I
have verified the sensors works by swapping sensors and cables with other robots (multiple times, with another teacher who is an electrical engineer watching). If I try going to "View" the sensors (on the correct ports), I get a value of "0". I have reloaded
the firmware.
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