A Tone Generator With LCD Display!

This is a tone selector with the ability to change the buzzer frequency by a potentiometer and to see the result on a 16x2 display.

May 22, 2017

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10 respects

audio

buzzer

synth

Devices & Components

Arduino Uno Rev3

Jumper wires (generic)

RGB Backlight LCD - 16x2

Resistor 221 ohm

Resistor 330 ohm

Breadboard (generic)

Buzzer

Rotary potentiometer (generic)

Trimmer

Project description

Code

Arduino Code

arduino

1#include <LiquidCrystal.h>
2
3LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
4int  ccc = 1;
5int sensorPin = A0;
6int sensorValue = 0;
7int freq = 0;
8const  int buzzer = 7;
9
10void playTone(int freqq){
11  lcd.clear();
12  lcd.setCursor(0,  0);
13  lcd.print("Freq");
14  lcd.setCursor(0, 1);
15  tone(buzzer, freqq);
16  lcd.print(freqq);
17}
18
19void setup() {
20  pinMode(buzzer, OUTPUT);
21  lcd.begin(16, 2);
22  lcd.setCursor(0, 0);
23  lcd.print("Testing...");
24  delay(1000);
25  for (int freqq = 256; freqq <= 512; freqq++) {
26    playTone(freqq);
27    delay(10);
28  }
29  for (int freqq = 512; freqq >= 256; freqq--) {
30    playTone(freqq);
31    delay(10);
32  }
33  noTone(buzzer);
34  lcd.setCursor(0, 0);
35  lcd.clear();
36  lcd.print("Ready in 3");
37  delay(1000);
38  lcd.clear();
39  lcd.print("Ready  in 2");
40  delay(1000);
41  lcd.clear();
42  lcd.print("Ready in 1");
43  delay(1000);
44}
45
46void loop() {
47  sensorValue = analogRead(sensorPin);
48  freq = ceil(sensorValue/5)*5*2;
49  if (freq>2000) {
50    freq = 2000;
51  }
52  if (freq<20) {
53    freq = 20;
54  }
55  playTone(freq);
56  delay(20);
57}
58

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int  ccc = 1;
int sensorPin = A0;
int sensorValue = 0;
int freq = 0;
const  int buzzer = 7;

void playTone(int freqq){
  lcd.clear();
  lcd.setCursor(0,  0);
  lcd.print("Freq");
  lcd.setCursor(0, 1);
  tone(buzzer, freqq);
  lcd.print(freqq);
}

void setup() {
  pinMode(buzzer, OUTPUT);
  lcd.begin(16, 2);
  lcd.setCursor(0, 0);
  lcd.print("Testing...");
  delay(1000);
  for (int freqq = 256; freqq <= 512; freqq++) {
    playTone(freqq);
    delay(10);
  }
  for (int freqq = 512; freqq >= 256; freqq--) {
    playTone(freqq);
    delay(10);
  }
  noTone(buzzer);
  lcd.setCursor(0, 0);
  lcd.clear();
  lcd.print("Ready in 3");
  delay(1000);
  lcd.clear();
  lcd.print("Ready  in 2");
  delay(1000);
  lcd.clear();
  lcd.print("Ready in 1");
  delay(1000);
}

void loop() {
  sensorValue = analogRead(sensorPin);
  freq = ceil(sensorValue/5)*5*2;
  if (freq>2000) {
    freq = 2000;
  }
  if (freq<20) {
    freq = 20;
  }
  playTone(freq);
  delay(20);
}

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schematics

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cronenborg

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