Turn Knob Tone with Annoyance Alarm

Code

The code in the editor below is ready to run! Plug Code Lab Mini in to your computer's USB port, make sure that your Code Lab Mini Screen Add-On (sold separately) is attached, 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.

If you haven't set up your Code Lab Mini Screen Add-On yet, visit Chapter 0 to watch a video showing you how to do that.

//Turn up the tone on the speaker with the turn knob, and print a message after the tone reaches 700 #include "CLMiniScreen.h" //The code library enables new functions to be used with the screen CLMiniScreen lcd; //the library name followed by the name you give the LCD screen. Here it is 'lcd' void setup() { pinMode(2,OUTPUT); //speaker pinMode(A0,INPUT); //turn knob lcd.begin(); //.begin() 'sets up' the screen. You'll always need it when using the screen } void loop() { tone(2,analogRead(A0)); //Use the analogRead from the knob (range 0-1023) as the hertz value on the speaker if(analogRead(A0)>700){ //If the turn knob reading (being used as the tone), reaches higher than 700... lcd.print("Ack! Annoying!"); //Show a message on the screen lcd.setCursor(0,0); //Reset the cursor to the top left of the screen before printing again } else{ //If the turn knob and tone are lower than 700... lcd.clear(); //clear the message off the screen } } // (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

Coming Soon!

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