OffSeasonFMS
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OffSeason FMS
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2017 scrimmage - day 2
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OffSeason FMS
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> Things went better today. Not because there were no problems, but because we > knew some workarounds and found more. > > There are 4 key problems we ran into and we have workarounds for all of them. > > Before you ask, yes, all robots were running the very latest versions of > everything: > - Radio firmware 17.3 > - DS 17.0a11 > - RIO v8 > > Problem 1: Bad DHCP > - The field AP was configured as a DHCP server as usual. This has always > worked fine in the past. > - Symptom: If you connect driver stations to the network, they sometimes DHCP > and sometimes do not. Also they sometimes get an address and then lose it. > - Likely cause: Competing DHCP servers are confusing the allocation of > addresses. > - Workaround: Set all the driver stations to static IPs. > > Problem 2: OpenMesh AN radio never gets a green light > - All robots were running the new AN radios. Some radios worked fine, some > had this problem almost every match. > - Symptom: The radio boots but the green light never comes on to signify a > connection to the field. The radio does not have field connectivity. > - Workaround: Unplug all the ethernet connections from the radio and wait 10- > 15 seconds. The green light will come on. Reconnect all the ethernet > connections. Make sure the RoboRIO is in the port closest to power. > > Problem 3: RoboRIO won't talk to the DS > - Sometimes the team would plug the RoboRIO into the enet port away from the > power connector. > - Symptom: The radio is connected to the field and there appears to be traffic > passing but the RoboRIO is not visible to the DS. > - Workaround: Move the RoboRIO to the port closest to the power jack. > > Problem 4: Magic e-stop > - Most teams never have this problem. Some teams have it every match. > - Symptom: Immediately at the beginning of autonomous, the robot e-stops > without being commanded by the team. > - Workaround: Take the team off of FMS and let them run in at-home mode. > Obviously this would never work at a real regional. > > Aside from all of these issues, the OffSeason FMS worked like a champ.
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