Overview
Things
Story

the code
how to use this project
the explanation for the code

Published June 3, 2021

Analog Read-speaker

Play and change the pitches using potentiometer

BeginnerFull instructions provided495

Things used in this project

Hardware components

Arduino UNO

Speaker: 0.25W, 8 ohms

Rotary potentiometer (generic)

Jumper wires (generic)

Software apps and online services

Arduino IDE

Story

a potentiometer to port A0

a speaker to port 2

the circuit

the code:

#include "pitches.h"

int speakerPin = 2;
int notes[] = {
 0, NOTE_AS1,NOTE_A2,NOTE_GS3,NOTE_G4,NOTE_FS5,NOTE_F6,NOTE_E7,NOTE_DS8
};
void setup() {
pinMode(A0,INPUT);
pinMode(speakerPin,OUTPUT);
}
void loop() {
 int sensor = analogRead(A0);
 int S = map(sensor,0,1023,0,9);
 int P = notes[S];
tone(speakerPin,P,100);
}

------------------------------

how to use this project:

download the following code, then do the circuit and use the project!

------------------------------

the explanation for the code:

 #include "pitches.h"

"pitches.h" is a C Header file, it should be in the same folder with the project.

int notes[] = {
 0, NOTE_AS1,NOTE_A2,NOTE_GS3,NOTE_G4,NOTE_FS5,NOTE_F6,NOTE_E7,NOTE_DS8
};

"notes[]" is an array that contains the notes to be played.

int sensor = analogRead(A0);

"sensor" is an integer contains the reading of the sensor.

int S = map(sensor,0,1023,0,9);

"S" is an integer contains "map()" function to make fewer cases for sensor reading.

 int P = notes[S];

"p" is an integers shows which note should be played.

tone(speakerPin,P,100);

play the tone "int P" repeatedly.

Code

/*************************************************
 * Public Constants
 *************************************************/

#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978

Analog Read-speaker

Things used in this project

Hardware components

Software apps and online services

Story

the code:

how to use this project:

the explanation for the code:

Schematics

the circuit:

the schematic:

Code

the code:

pitches

Credits

aboda243

Comments

Embed the widget on your own site

Analog Read-speaker

Analog Read-speaker

Things used in this project

Hardware components

Software apps and online services

Story

the code:

how to use this project:

the explanation for the code:

Schematics

the circuit:

the schematic:

Code

the code:

pitches

Credits

aboda243

Comments

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