Buttons Raise and Lower Motor Jitter Strength

Code

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// Press Button 12 to increase the strength of Buzz's jitter, and button 13 to decrease it int strength = 0; //a variable named 'strength' that is an integer (whole number) and starting value of 0 void setup(){ pinMode(9,OUTPUT); //motor pinMode(13,INPUT_PULLUP); //button 1 (lowers strength) pinMode(12,INPUT_PULLUP); //button 2 (raises strength) } void loop(){ analogWrite(9,strength); //use the strength variable as the analogWrite strength (0-255) if(digitalRead(12)==LOW){ //If button 12 is pressed strength++; //raise the motor strength delay(20); //a delay to slow down the fade of the strength } if(digitalRead(13)==LOW){ //If button 13 is pressed strength--; //lower the motor strength delay(20); //adjust the delays for a slower, smoother fade of the motor // -- is shorthand for 'subtract one from the variable' } if(strength < 0 || strength > 255){ //if the variable goes below 0 OR above 255 strength = 0; //set it to 0. } } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense
 

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Quiz

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




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