Docker ROS 2 humble environment for your Rasbperry PI to show some information that are interesting in robotics. You can configure it to show different values, the default is:
-
WiFi IP-Address (using
psutil) -
Temperature (using the python bindings for
vcgencmdfor raspberry pi) -
Battery (read from the ROS 2-topic
battery_state) -
WiFi signal strength (by simply parsing
/proc/net/wireless) -
An overview as icons/emojis showing if any of the following problems occured:
- ⚡ for undervoltage
☹️ for CPU throtteling- F for CPU Frequency cap
- T for CPU soft Temperature limit
followed by the same icons to show if any of these problems happending right now (If everything is fine you should see 4 dashes followed by a vertical line follwed by 4 additional dashes
----|----- based onvcgencmd). -
The systems ROS_DOMAIN_ID next to the overview (you should configure the docker-compose file to forward this to your docker container)
Just copy the docker-compose.yml to your robot, write your own or checkout the whole repository then run docker compose up -d and wait until the docker images are downloaded, 1-2 minutes later the information should show up on the connected screen.
If the docker deamon is setup to auto-start (for example via systemctl/systemd) the docker container will automatically start every time you start the raspberry pi.
If you get the error message sys_info_extended.py: error: I2C device not found: /dev/i2c-1 you need to activate the I2C-interface on the raspberry pi with raspi-config