OM5P-AP wifi dropping out

[deeek]

I would like to echo the problems that camtunkpa and dradel are experiencing with these radios. We are having very similar problems with these radios being finicky when the robot moves around (like going over a defense). Two out of three of our radios are experience this issue. I am hoping that Open Mesh can solve this issue. Not liking these radios so far.

UPDATE: After extensive testing it seems that our issue was a loose wire connecting to the VRM which was causing the radio to drop the connection.

[Stappy]

We attended our first event this weekend and while we had not noticed an issue with our radio, the inspectors told us it was defective and handed us a loaner.
Now we have to BUY (???) a new radio due to a defect. Is this something that is being covered by FIRST? If so where do I need to go to get one?

[billbo911]

Originally Posted by deeek

....

UPDATE: After extensive testing it seems that our issue was a loose wire connecting to the VRM which was causing the radio to drop the connection.

Thanks for the update Deeek!
I have a feeling many teams may be having this same issue. This game will expose those problems really quickly. Finding the root cause is another issue entirely.

[Bryan Herbst]

Originally Posted by deeek

UPDATE: After extensive testing it seems that our issue was a loose wire connecting to the VRM which was causing the radio to drop the connection.

I saw this (and similar issues) with tons of teams at the Northern Lights regionals.

When an FTA(A) or CSA tell you that your radio lost power during a match, the first thing you should check is your VRM and radio power wires. I had a few teams who thought this meant they just needed to add more electrical tape to hold their radio's power plug in place on the radio, but the power kept dropping out because the wires were shorting out.

Double check:

• You have the radio plugged into the 12v, 2 amp rail (one team had it on 12v 500mA)
• There is no copper showing on the VRM's power wires or the radio's power into the VRM
• The above wires are also securely inserted into the terminals

[nuclearnerd]

We are having a similar problem with our practice bot (and our comp. bot before bagging). Whenever we hit a bump, coms is lost for 4-5 seconds and the ethernet lights go out on the rio. Oddly, the Axis camera, which connects to the other port on the OM5P continues streaming without interruption.

Our workaround is to swap ports on the OM5P. Now the rio stays connected after bumps, but the camera drops out for a bit. Really strange that one port seems to have a loose connection on two radios. Anyone else have this issue?

[Greg McKaskle]

A dropout of 5 seconds sounds like an ethernet cable or loss of link. See if wiggling and tugging either end of the cable causes the link light go out. Try a different cable too.

We have certainly seen roboRIO ports broken off the board, but not often. I haven't seen whether the OpenMesh is soldered through the board or to the board. See if either one of them wiggles within the device and causes the issue.

Please let us know what you find.

Greg McKaskle