In this tutorial, we will show you how to connect and use additional board computer, like NVIDIA Jetson or Raspberry PI, on your rover.
First, make sure you have configured your board computer. You can find instruction for flashing the newest firmware here:
For supplying power to your BC you need to provide power connection to rovers battery. Our proposed solution is a PowerBox.
It's a module that replaces Leo Rover right quarter and provides additional power sockets.
We will use one of this sockets, and connect our board computer to it, with special cable (you will need to make it on your own), herer is an example for Jetson computer
The cable needs to have correct pluggable terminal block (you get them with power box, but you can also buy them here).
Mounting computer to the rover is actually up to you. There are many mounting holes on the rover, so you can print yourself special plate, which you will mount the board computer to, and mount the plate to the rover. You can also use other solutions, like velcro. Anything that works for you is good.
To connect the computer we will need to configure additional network interface, but first you need to connect your computer with Raspberry PI in the Main Electronics Box, with ethernet cable (there is special hole in MEB cover, so the cable can fit).
Once you do that, you need to connect via ssh to the Raspberry on the rover. It's the main host on the rover, it places the Access Point, so we need to make the additional configuration on this computer.
When connected, we can start configuring the interface. First go to /etc/netplan. Since Ubuntu 18.04 LTS, Netplan is used for configuring networking. There we will make our configuration file 20-eth-shared.yaml, and include the setup for our network device. In our case, ethernet device was eth0. You can check what is the name on your rover with
and check for some name like ethx where x is a number (it's name automatically given by OS).
Remember the name of the interface that you want to change and type
And paste the following code
Here we say that for interface eth0 it will be managed by networkd (by default it would be managed by NetworkManager), its addresses will be from mask 10.1.0.1/24 and it has disabled ipv6 addressess.
You can check if everything is okay with
And then apply changes with enter
Now we also need to add configuration for dnsmasq. To do so go to /etc/dnsmasq.d directory and type
And paste those lines
Here we say that for interface eth0 addresses given by dhcp will be in range 10.1.0.10-10.1.0.255, the network mask is 24 bits and that assigned ip address will be freed after 12h.
Now we have to restart both network manager and dnsmasq. To do so type:
Now your additional computer should be visible for Raspberry PI.
