For this assignment, I chose to create three buttons that would play different notes when pressed. If two buttons are pressed at the same time, the buzzer will play a different note.
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#define yellow 400 //this will give names to the notes to be called later #define blue 800 #define green 500 #define greenBlue 1000 #define yellowBlue 1200 #define yellowGreen 600 int buzzer = 3; //this is where the buzzer is plugged in int yellowButton = 13; //this is where the buttons are plugged in int blueButton = 12; int greenButton = 11; int yellowState = 0; //set the state to zero so that the they can be read as on later (1 vs. 0) int blueState = 0; int greenState = 0; void setup() { Serial.begin(9600); //sets baud to 9600, make sure it matches on monitor pinMode (buzzer, OUTPUT); //says that the buzzer is making noise pinMode(yellowButton, INPUT); //tells it to read the values from the buttons pinMode(blueButton, INPUT); pinMode(greenButton, INPUT); } void loop() { yellowState = digitalRead(yellowButton); //says that the state is read from the button, so when pushed = 1 blueState = digitalRead(blueButton); greenState = digitalRead(greenButton); if (yellowState == HIGH) { //when the buttons are pushed, they will play their designated note Serial.print("yellow"); //will print which button is playing in the monitor delay(10); tone(3, yellow); //(pin number, frequency) yellowState = 1 - yellowState; //changes the state back to zero so it will stop ringing 1-1=0 delay(10); } if (blueState == HIGH) { Serial.print("blue"); delay(10); tone(3, blue); blueState = 1 - blueState; delay(10); } if (greenState == HIGH) { Serial.print("green"); delay(10); tone(3, green); greenState = 1 - greenState; delay(10); } if (greenState == HIGH && blueState == HIGH) { //plays note when 2 pressed together Serial.print("green and blue"); delay(10); tone(3, greenBlue); greenState = 1 - greenState; blueState = 1 - blueState; delay(10); } if (blueState == HIGH && yellowState == HIGH){ Serial.print("blue and yellow"); delay(10); tone(3, blueYellow); blueState = 1 - blueState; yellowState = 1 - yellowState; delay(10); } if (yellowState == HIGH && greenState == HIGH){ Serial.print("yellow and green"); delay(10); tone(3, yellowGreen); yellowState = 1 - yellowState; greenState = 1 - greenState; delay(10); } } |
Above is my code(I published with Crayon but still no color?) and below is my schematic:
While the yellow and blue buzzers would turn off after playing, the green button would play continuously and I have no idea why. The serial monitor would show it being printed continuously as green with blue and yellow being printed along with it when they were pushed. All the buttons were running the same code and were wired exactly the same as well.
Bein able to play combination frequencies was an interesting byproduct of the green never turning off and I added in more functions that followed through with that later. I also tried several different frequencies to try and get more appealing notes(pulling suggestions from this blog and Arduino) but uploaded the code with the notes I practiced with because they were more obvious when trying to listen for them.
Here is also a cool video from Vox that I found about design that has nothing to do with my instrument but just reminded me of this class.