Roborio Comm light is off

[hwu24110]

We've had the problem of the comm light being off since yesterday. Yesterday, the robot was working fine and completely operational. We were using the DAP-1522 radio since it was already configured and I just needed to get the robot complete. I decided to swap it out with the OM5P-AN radio to see if I could get it to work. I managed to get it configured, but the robot was no longer connecting. I noted the comm light was off so I experimented and swapped it out for the same DAP-1522 radio and found the comm light was still off and I still couldn't connect.

Today I reimaged the roborio and installed Java and got the robot functional again. I could connect to it via wifi with the DAP-1522 radio. I then swapped out a Talon SR with a Victor SP to test it and it still connected fine. I swapped the Victor SP with the old Talon SR and then the comm light was off and I couldn't connect. I didn't touch any of the wires except the wires leading from the motor controller to the PDP and the PWM. I tried reimaging and downloading java on the roborio, I momentarily got a red comm light, then it went off. I tried the same process again and then it wouldn't come on.

I've checked the firmware version for the roborio and found it to be 3.0.0f0. As of right now, I cannot connect to it via USB nor build code to it. I'm not with the robot right now, but I can check tomorrow.

[hwu24110]

I can connect to the web player and a wifi network is being connected to, but the driver station has red lights on Communications and Robot Code. I reimaged the roborio and downloaded java today and it momentarily could connect via USB. I tried wireless but it didn't connect, then USB stopped working. I can still build code to it

[hwu24110]

So for some reason, the only time the roborio is detected by the driver station is when I connect the laptop to the school internet via ethernet or wifi and USB B to the roborio. If I disconnect the ethernet, I still stay connected until I turn off the robot or disconnect the USB B.

[Mark McLeod]

Sounds like you might be suffering from something like conflicting or mixed IP addresses.
What IP addresses does your school Internet serve out?

Have you tried turning off all NIC's that aren't being used expressly to connect to the robot?

[hwu24110]

Thanks for suggesting the ip addresses. That was the issue. I check the ip address and it had changed to some numbers that wasn't the correct address. I changed it and it worked.