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Update the Raspberry Pi and software configuration

The following steps allow you to update the software running on the Raspberry Pi and the necessary configuration.

  • Connect your laptop to the WiFi network GL-MT300N-V2-c2d. The password will be provided. Make sure that you stay connected to this access point. Do not make any download while connected this network which is not related to this lecture.

  • Power on Raspberry Pi via the USB C cable

  • Wait until IP addresses apears in the router

  • Open a terminal (follow this link for more information about opening a terminal)

  • Connection to Raspberry Pi via ssh

ssh pi@192.168.1.6

where 192.168.1.6 should be the IP adress from the routers admin page. This IP address will be different for every Raspberry Pi. When you connect the first time, you need to confirm the connection by typing "yes".

Note that everybody can connect to the Raspberry Pi using the username (pi) and password aslong as your are on the same network.

  • If you have the error No route to host, make sure your laptop is connected to GL-MT300N-V2-c2d

  • Change the directory to drifter-raspberry-pi:

cd drifter-raspberry-pi
  • Open the file drifter-diy.toml with a text editor:
nano drifter-diy.toml

For nano, ^W means the key Control-W for saving a file M-U means the key Alt-W for undo

  • Use cursor keys to navigate and change phone_number entry in drifter-diy.toml to a phone number from your group with prefix and country code in double quotes, for example:
phone_number = "0032412345678"
  • Output the file and double check the changes:
cat drifter-diy.toml

  • Check the time with the date command

  • You can change the time using the shell command: sudo date -s "10 JAN 2021 12:00:00"

  • Restart the julia program recording the position:

sudo systemctl restart drifter-diy.service
  • Check the output of the julia program using:
journalctl -u drifter-diy.service
  • Typical message that you will see:
Feb 08 13:41:48 drifter02 julia[1356]: ┌ Debug: GNSS response +CGNSINF: 1,0,20250208124147.000,,,,0.00,0.0,0,,,,,,0,0,,,,,
Feb 08 13:41:48 drifter02 julia[1356]: └ @ GSMHat ~/drifter-raspberry-pi/GSMHat.jl:107

The GNSS receiver that the right time but not the position.

Feb 08 14:02:13 drifter02 julia[5541]: ┌ Debug: GNSS response +CGNSINF: 1,1,20250208130211.000,50.565559,5.570504,164.500,0.00,193.5,2,,1.3,1.6,0.9,,13,9,,,38,,
Feb 08 14:02:13 drifter02 julia[5541]: └ @ GSMHat ~/drifter-raspberry-pi/GSMHat.jl:107

The GNSS receiver that the right time, longitude and latitude.

  • Stop the Raspberry Pi once finished with the command:
sudo halt