abrown
USA
Asked
— Edited
Resolved by DJ Sures!
In my robotics class, a pair of students have a basic Six robot that they are trying to program to do a 5-minute dance routine. They are using the standard, canned, Six movements for their routine and have added a 5-minute mp3 to choreograph to. It's basic stuff, but their Six consistently loses WiFi communication, thus interrupting the dance routine.
WiFi loss does not occur at the same place. It happens pretty randomly. It happens when connected to different computers. It happens when Six is fully charged. It happens after the computer has been rebooted. We could not trace the problem down to anything specific.
Has anyone else experienced this problem?
I checked with the students today and they did have their RGB display disconnected. I had them remove the RGB Animator control and re-run their dance routine. They again disconnected during the routine. I then had them connect the RGB display to see if anything different happens. Six disconnected again. They did save the error message they received. Here it is:
end of inner exception stack trace
at System.Net.Sockets.NetworkStream.Read(Bytw[] buffer, Int32 offset, Int32 size) at EZ_B.EZB.YLCck4ZTnN(Int32 ,Byte[] cmdDATA) BbytesToExpect: 2 | | Received: 0 0 Disconnected
The only thing I can consider is the PC being used is disconnecting from the robots wifi, as demonstrated in that error message.
This has never happened before - I'm at a loss of what could be causing the disconnect.
When the disconnect occurs, does the red light on the ezb stay lit?
I will have to check on this with the students tomorrow. I will also have them run their dance routine on another PC.
Sorry I haven't gotten back to this thread. Since 3 weeks ago, other events have come to light. Because of their frustration with their JD, the students decided to switch to a Roli. They have since been working with it. Also, the students were preparing for and taking their midterm exams, so they haven't been able to do anything with their Roli for the past weeks. And finally, when they were able to get back to their Roli yesterday, they discovered that their wifi adapter had been disabled. As a matter of fact, all of the wifi adapters in my classroom were disabled...mysteriously. Because of the IT Dept. control over the computers and the network, re-enabling the adapters was unsuccessful on my part. Apparently, they have this network set up in a way that enabling the wifi adapters requires a network admin level privilege. I will have to wait until IT comes in to resolve the problem.
As an aside, the IT Dept. installed older Dell Wireless 1505 adapters into our computers. It is comprised of an internal card and an external plug-in cable attached to what looks like a "box" of an antenna. Weird looking. This may be the root of the whole problem, but unfortunately I have no other types of wifi cards to compare results with.
That does sound like a challenging situation. Thanks for the update!
I tried closing this one yesterday, but did not leave a message. Thus it was not closed. Since there are so many variables that could be the root of the problem here (in particular, the Dell wifi cards), I will close this one for now.