5.5.D - Potentiometer Pixel Smooth

5.5.D - Potentiometer Pixel Smooth

Learn how to control a micro:bit with a Potentiometer and code.

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Same Circuit – Make sure connections still work

We'll need to connect one side of the Potentiometer to Ground (GND) and the other side to 3.3v

We will then connect the center of the Potentiometer to Pin 0. (Note that Pin 0 is an analog pin, which we'll need for the Potentiometer.)

The 3.3v hole on the Bit Board is labeled and is actually two holes right next to each other on the Bit Board. (There is a small line showing the connection between them.)

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Load the Code

For this code we've added a variable to track the previous value of the Potentiometer. This allows us to compare it to the current value, and only clear the screen and plot a new pixel if the value has changed.

While our code is a little more complicated, it becomes more efficient, and only executes certain commands based on conditions.

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Load the Code

We're going to load the following code for our Potentiometer Pixel Smooth program

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Test it Out!

Turn the small blue knob on the Potentiometer and you should see a single pixel move left or right.

This time we plot the pixel (after clearing the screen) only after we check if the value from the Potentiometer has changed from what its previous value was.

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