For this task you will need a potentiometer from your pack along with the breadboard and pico
You can either start fresh or take your previous circuit from task 2 and add your potentiometer to the board like so:
For Wokwi you will need to build your board and add your components. For each section the full soloution will be provided (python code and JSON for diagram) both in the repository here as well as a working wokwi project. Do try it yourself first and go to the examples as references if you get stuck