Show Turn Knob Readings on the Serial Monitor

Code

The code in the editor below is ready to run! Plug your Code Lab 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 serial monitor to see the values that a turn knob sends in to your code Remember to hit the 'Monitor' button next to the dropdown menu on the code editor to open the serial monitor */ void setup() { pinMode(A0,INPUT); //turn knob in the smaller block of ports with + and - ports Serial.begin(9600); //set the serial port up to receive data } void loop() { Serial.println(analogRead(A0)); //"Print" the value from the turn knob on the serial monitor } // (c) 2021 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!

Video Notes for Code Lab Users:

  • Your turn knob is connected to port A0, not A2 as the video says.

Challenges

Can you complete the challenge? 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!

Concepts

These are the new code concepts covered in this example program. To become a great coder, read through these concepts to learn new vocabulary.

Quiz

If you're having trouble, try to run an experimental program or look at the example code to help you find the answer.

1. Which syntax ends the entire 'void loop' function?




2. Which syntax ends a single code command?