Laptop and Turtlebot4 communication without internet

[Leo-Gut28]

Hi everyone,

I'm fairly new to robotics and ROS2, and I just had a networking question.

I have a TurtleBot4 and a laptop, and my goal is to have the robot operate in a room without internet access. I'm using ROS2 Humble and have set up a discovery server to manage communication following the turtlebot user guide.

Here's what I did so far:

Initially, I used an AP with internet to connect the TurtleBot4 and laptop so I could create a map of the room. This setup worked fine. However, in the real use case, I can't use the AP, so there won't be any internet or external Wi-Fi available.

Without the AP, the TurtleBot and laptop can't communicate, which breaks everything. I was thinking if I could connect the TurtleBot4 and laptop using a static Ethernet connection and run the discovery server that way? If so, is there anything I need to change from the regular discovery server steps besides the IP?

Any guidance would be hugely appreciated. Thanks in advance!