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
