The if else statement states that if datatype notes 's current position (indicated by the variable I 's value) is equal to a space within the datatype notes, there will be a pause. For the void loop, we start with an for statement, stating when variable I (starts with 0 value) is less than the size (bytes) datatype notes minus 1, I 's value increase by 1 and proceeds into an if else statement.
Further down, a void setup statement appears where it just states that buzzerPin (D8) is an output pin, where information is being sent from the Arduino and to the buzzer. This function indicates the variable of pin hooked up to the buzzer, buzzerPin, the different frequencies of notes being played, specified in datatype tones, and the duration, indicated by variable duration. The if statement states that when a note equals to the specific note name in datatype notesName, which is pointed out by variable I 's value, function tone() will be activated. Next up, we have a for loop, where if variable i (starts with 0 value) is less than the size (bytes) of datatype notes, the value of i will increase by 1, and an if statement will be ran. You can refer to this page, here, for a list of musical notes and each specific tone in the Arduino programming language. We start off with making a char datatype, notesName, which just declares the different notes we will be using and we make another variable, tones, stating the specific tone values for the variety of notes as stated by datatype char. In the next section, we have a void statement, playTheTone, and this section is in charge of combining the variables and datatypes we have set in the start, to create the melody for the buzzer. There is another variable after that, duration, which just states the seconds played for each note in datatype notes. In the third line, we have a char datatype, notes, that include the consecutive order of each musical note being played. These two variables act as integer variables. We also declare the variable tempo, the speed of the melody, is 200 beats per minutes.
Arduino piezo bell sound code#
Now, onto the code below!įirstly, the code starts off with declaring that variable buzzerPin, for the buzzer, is connected to D8 (digital pin 8). If everything is done correctly, it should look similar to the circuit diagram above. Now, insert another jumper wire to the same row as your negative (-/black) wire on your breadboard and connect that wire to GND (-) on your Arduino.
Insert one of your jumper wires to the same row as the ending pin of your resistor (the pin connected to its own row) and connect it to D1 (digital pin 1) of your Arduino. Then, attach one end of your 220Ω resistor to the same row as the positive (+/red) wire of your piezo buzzer and connect the other end of the resistor to the row next to it. To start making the circuit, first, connect the power (positive/negative) wires of your piezo buzzer to separate rows of your breadboard, as shown in the circuit diagram above.
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