Issues connecting to vrcvision.local on a raspberry pi 3

Hello, programmer from team 4664 here. We have been having some issues with connecting to the web interface of the frc vision raspberry pi image. occasionally I am able to connect via wifi by the domain frcvision.local. However this rarely works. What seems to typically work is turning off wifi, connecting to the robot’s network via ethernet, then going either to frc vision.local or the raspberry pi’s ip. However, if I try to connect with wifi turned on and ethernet plugged in I can’t connect. If I then turn wifi off I can connect over ethernet, even when turning the wifi back on. I’ve done some network scans and It seems that when I can’t connect the device doesn’t even show up on the network. I’m currently using last years radio so that could be the issue but everything is updated to the 2020 images. I’ve also found that I don’t have any issues when connecting over my home lan. Overall I’m stumped as to what the issue could be. any help would be greatly appreciated!

I would suggest reinstalling bonjour. I just set it a static IP and connect using the IP.

I’m not sure it’s a dns issue as I can’t connect to it even with the ip. Well, more like when I can’t connect there is no ip to connect to as it doesn’t even show up on a network scan.

Are you certain the pi is booting? Is there traffic showing up on the lights under the Ethernet port? Is the green light flashing while it is booting? Check the Ethernet connection. Make sure scanner is on 10.46.64.0-10.46.64.255

The indicator lights always turn on. It starts with red and green then after it finishes booting, transitions to just the red led. The Ethernet lights are also active. I’m starting to think it could be an issue with the radio. Especially considering the pi didn’t have any issues on my home network. perhaps the raspberry pi isn’t able to get an ip address sometimes? I’m not really a networking expert so that’s the best I can think of. I’ll try out our new one from the kit of parts to see if it helps at all.

Hmm, it could be a DHCP issue but I don’t think so. It might be the radio, make sure it’s images and programmed to the newest firmware.

Did you enable the firewall when configuring the radio?

Should you be doing this?

Well In case anyone else has the same issue. Switching to our new radio fixed the connection problem somewhat. I am now able to reliably connect via the lan using the ip however, the dns seems to be broken now as frcvision.local doesn’t work.