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Unread 19-03-2012, 16:28
dbarr4011 dbarr4011 is offline
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AKA: Mr. Barr
FRC #0141 (Wobot)
Team Role: Mentor
 
Join Date: Jan 2007
Rookie Year: 2004
Location: Holland, MI
Posts: 7
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Re: Intermittent connection on field only

We have also been getting D-Link drop outs on the field. During our competition at Traverse City and at Western Michigan District we had several communications drop outs. Our robot was not driving hard and no major current draws on the battery. The Field controls personal said our radio reset. I am questioning this answer because I see the radio takes about 1 1/2 minutes to power-up and starts its wireless communications. We loss communications for about 40 seconds. After 40 seconds we are off and running again. My thoughts are we having a wireless network access point/network problem on the field control access point. We saw several other teams with the same problem at these two events.

We have checked the power to the 12V/5V converter. We have replaced the Ethernet cable with a shielded Ethernet cable. We added (4) 470uf 35V capacitors across the 5V power into the D-Link radio. We are running LabView and a camera on our robot network back to out DS. We process the camera image on the DS and send data back to the Robot through a UDP packet.

HELP.... We ordered a new D-Link radio and power converter today but I think there is an issue on the Field Control Access Point.