4_13 Turn Knob LED Brightness

Turn Knob LED Brightness

Code

The code in the editor below is ready to run! Plug Code Lab Mini in to your computer's USB port with the cable and hit 'Upload Your Code!' to see what it does. Change something in the code, like a delay or pin number. Try to add something new to the program - it's yours to tinker with! You can always press the 'Restore' button to return the code to the working example.

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/* Use the turn knob to adjust the brightness of an LED*/

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Success!

Compile errors:

Serial port monitor: Input: Send Close

 

Walkthrough Video

Watch the video for a line-by-line explanation of how the example program works. Then you'll be ready to make some changes of your own!

Challenges

Can you complete the challenges? Change the code in your code editor above. Upload your code to see the effect when you're finished. Complete a challenge? Check it off the list!

Add another LED color from the RGB LED that gets brighter along with LED 9.

Update the second argument of the analogWrite function so that turning the knob all the way only gets the LED to half of its brightness. Hint: you need to change the number that analogRead(A0) is divided by.