Wifi Connection Problems

FIRST General Forum
1

We have been trying for the last week to set up our dlink wifi router. I have followed the instructions by the letter (by what I can tell), but I cannot communicate with our robot over wifi while in driver station. Here are some clues that may help.

  1. While on the developer accout, we can communicate with both the router and crio. I know this because I used the ping function from command prompt and recieved replies in less than a milisecond.

  2. Our Imac, which we are using with labview instead of the classmate, can connect and deploy code to the crio over wifi.

  3. When we connect our classmate via LAN to the router, we can communicate and run our robot.

  4. After we accieved a connection through the developer account, and log onto the driver account, I can see that an image was transmitted at some point. I do not know if it was the instant I logged on, or while I was in the developer account. When I log onto the developer account, the image is frozen.

  5. I am not sure what this means, but the dots next to both “Bridge” and “Radio” alternate flashing. There is about one flash every few seconds, and it alternates between the two. The Dlink is set to Access point, so I do not know why it is connecting as a bridge connection.

Please help me. This problem has been frusterating me for the last week, and I need to get working on developing the code.

2

Are you possibly running the driver station on two different computers? The alternating connection status is a symptom of the robot having two clients. It is also possible that two computer wifi NICs have the same IP address and are communicating with the robot.

Greg McKaskle

3

I found the problem about a half hour after posting this. Here is the problem. When I first connected to the network connection, I chose the Public Network setting, which meant the computer would not connect automatically. This caused the connection to close when I switched from the developer accout to the driver account, and, appearently, the driver station could not reinitiate the connection. I fixed this by making the network connect automatically.

4

Thanks! We are having this problem as well. I will try your solution.

5

Also make sure to change your computer’s IP address to something compatible with that of your dlink. For example, if your dlink’s IP is 10.xx.xx.1, where xxxx is your team number, change the IP of your wireless adapter to something like 10.xx.xx.5, again where xxxx is your team number.