Connecting to Limelight via USB

Technical
1

Our limelight as a static IP 10.TE.AM.2 and I was wondering you connect to it when tethered through USB.

2

If you setup port forwarding yes you can connect it while tethered. Check the official LL documentation for more info.

3

Setting up Port Forwarding in the code as written does not work.

4

We also have two limelights

5

Try the port forwarding code while having only one LL connected. Also are you using the second radio port?

6

Using a switch

7

The Rio should be .2. it is recommended to use .12-.19 for limelights, etc.

8

So connected only to robot via usb

IP on limelight is static at 10.8.29.13:5801 for the port
Not able to access.

Port forwarding is setup as instructed in Robot.java.

9

Can you try with only 1 LL. Maybe they have conflicting names or ips or ports or something like that? (Just writing things that I would do to identify the problem)

10

Make sure the limelights have different names….

Are you using “limelight.local” inside the for loop?
Did you try “10.8.29.13” instead?

11

I did. The limelight isnamed limelight-rear.local. All that was setup first. Just not able to see it over USB tether.

12

Something like this might work for 2 …

for (int port = 5800; port <= 5807; port++) {
            PortForwarder.add(port,  "limelight-1.local", port);
for (int port = 5800; port <= 5807; port++) {
            PortForwarder.add(port+100, "limelight-2.local", port);

Limelight 1 would be 5801, Limelight 2 would be 5901

13

Already applied it. Just working with one at the moment

14

The rio’s ip when tethered to USB is 172.22.11.2

15

Yes… 172.22.11.2:5801 would take you to limelight-1.local

16

Not 172.22.11.13:5801 ??

17

In a browser you put 172.22.11.2:5801

Which is the Rio.
The Rio then forwards the request to the limelight using the limelight’s IP address and the port setup in the forward.

1 Like
18

makes sense now.

19

So I was able to see one of them through port 172.22.11.2:5801

I wasn’t able to see the other trying the trick you mentioned up above by adding 100 to the port forward. I’m going to try again later today.

1 Like
20

So an update. I can only port forward the one with the lowest up address. Adding 100 for the other one just forwards the first one again