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.


/* Use the turn knob to adjust the brightness of an LED*/ void setup() { pinMode(A0,INPUT); //turn knob pinMode(9,OUTPUT); //LED } void loop() { //analogWrite works on LED pins 9,10, and 11 on the Code Lab Mini analogWrite(9,analogRead(A0)/4); //Use the reading from the knob divided by 4, for the LED brightness } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense
 

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!