Random Tones, Jitter Strengths & Blink Delays (Attention Getter!)

Code

The code in the editor below is ready to run! Plug Buzz 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 random() to select the tone you play, the LED you light, how strong the motor buzzes and how long your delays last for a truly random attention-getter */ void setup(){ //Left LED Eye pinMode(3,OUTPUT); pinMode(4,OUTPUT); pinMode(5,OUTPUT); //Right LED Eye pinMode(6,OUTPUT); pinMode(7,OUTPUT); pinMode(8,OUTPUT); pinMode(2,OUTPUT); //Speaker pinMode(9,OUTPUT); // Motor } void loop(){ digitalWrite(random(3,9),HIGH); //Turn on a random pin 3,4,5,6,7 or 8 tone(2,random(40,1200)); //Play a random tone with hertz from 40 to 1199 analogWrite(9,random(1,256)); //Turn on the motor at a random power delay(random(10,300)); //Random delay from 10 to 300 milliseconds digitalWrite(random(3,9),LOW); //Turn off a random pin 3,4,5,6,7 or 8 noTone(2); //Stop the tone playing digitalWrite(9,LOW); //Turn off the motor delay(random(10,300)); //random delay from 10 to 300 milliseconds } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense
 

Walkthrough Video

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Challenges

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Concepts

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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?