Essentially our problem is this.
Perfect comm over ethernet, everything works perfectly.
Attempt Wifi connection, nothing. When we try to ping (CMD) either the router, the Crio or the connecting computer we get a response between 50% (best so far) and 0%. That is the percentage of packets that aren't dropped.
So far, we have
- Bought new routers
- Reconfigured 4 different routers
- Reflashed cRio
- Tried 3 different cRio
- Bought a USB network card that can connect on 5Ghz
We only get comms when the occasional packet gets through, never enough to actually see the robot code light go green (over wifi)\
We have tried pinging 10.9.55.1 (router)
10.9.55.2
10.9.55.5 (computer static ip)
Another note is that our robot from last year, which worked then, no longer works and experiences these same issues over wifi.......
We tried 3 different laptops with different wifi cards to no avail...... We even bought a Linksys N600 USB adapter, which ususally fixes interference issues and it didn't help at all.
Help would be appreciated
Quote:
Originally Posted by feverittm
Given we are in the same school district, I think I might have an idea 
I have heard from the IT techs that they installed quite a few more access points around CHS this past summer and it absolutely flooded our WiFi. We moved to another place in the school and were able to connect just fine. I would guess that it is possible that CV is the same. This was especially true in the shop area.
Find someone that has a WiFi scanner on their phone and have them check the signal strength in the area. I would also try moving the robot to another area in the school (try the Cafeteria) and see if the connection is any more stable.
Good Luck! |
We've tried the wifi sniffer, and we agree it is flooded..... 8 different networks exist at strengths of 30db or stronger across all channels.
This is why we tried the 5ghz band with the wireless usb card. Then we noticed long range comms suck....... so we put router and laptop next to each-other. It improved for a bit, then worsened. I also took one of the routers home, and I'll be playing with it once I finish my homework to see if the comms improved.
Our shop could be pretty noisy actually......... We have routers in nearly all the classrooms now and they are arrayed around the shop.... I'll grab a wifi sniffer and take a look in the shop tomorrow, since we only tested it in the classrooms