Arduino Voltage And Frequency Simulation | Tinkercad

1/*
2  Sketch Title: Illustrating the Relationship Between Voltage and Frequency
3
4  Description: This sketch demonstrates how changing voltage affects
5               the frequency of an oscillator, using a potentiometer,
6               a 7-segment display, an LCD screen, and a piezo speaker in Tinkercad.
7
8  This example code is in the public domain.
9
10  Modified 29 Nov 2024
11  by Google Gemini Advanced and VideotronicMaker (Tishin)
12*/
13
14#include <LiquidCrystal_I2C.h>
15
16// Set the LCD address for a 16 chars and 2 line display
17LiquidCrystal_I2C lcd(0x27, 16, 2);  // 0x27 is the most common I2C address
18
19// Define 7-segment display pins
20const int segA = 2;
21const int segB = 3;
22const int segC = 4;
23const int segD = 5;
24const int segE = 6;
25const int segF = 7;
26const int segG = 8;
27const int segDP = 9;
28
29// Define potentiometer pin
30const int potPin = A0;
31
32// Define oscillator pin
33const int oscillatorPin = 12;
34
35// Define piezo speaker pin
36const int speakerPin = 11;  // Using digital pin 13 for the speaker
37
38
39void setup() {
40  // Initialize the LCD 
41  lcd.init();
42  lcd.backlight(); // Turn on the backlight
43
44  // Set 7-segment display pins as outputs
45  for (int i = 2; i <= 9; i++) {
46    pinMode(i, OUTPUT);
47  }
48
49  // Set oscillator and speaker pins as outputs
50  pinMode(oscillatorPin, OUTPUT);
51  pinMode(speakerPin, OUTPUT);
52}
53
54void loop() {
55  // Read potentiometer value
56  int potValue = analogRead(potPin);
57
58  // Map potentiometer value to frequency range (adjust as needed)
59  int frequency = map(potValue, 0, 1023, 100, 1000);
60
61  // Generate frequency on oscillator and speaker pins
62  tone(oscillatorPin, frequency); 
63  tone(speakerPin, frequency); 
64
65  // Display frequency on 7-segment display
66  displayFrequencyOnSevenSegment(frequency);
67
68  // Display frequency and pot value on LCD
69  lcd.clear();
70  lcd.setCursor(0, 0);
71  lcd.print("Freq: ");
72  lcd.print(frequency);
73  lcd.print(" Hz");
74
75  lcd.setCursor(0, 1);
76  lcd.print("Pot: ");
77  lcd.print(potValue);
78
79  delay(100);  // Reduced delay for smoother sound
80}
81
82// Function to display frequency on 7-segment display
83void displayFrequencyOnSevenSegment(int frequency) {
84  int hundredsDigit = frequency / 100;
85  int tensDigit = (frequency / 10) % 10;
86
87  // Display hundreds digit on the first 7-segment display
88  digitalWrite(10, HIGH);  // Enable the first digit (common anode)
89  digitalWrite(11, LOW);   // Disable the second digit
90  displayDigit(hundredsDigit);
91  delay(5);  // Delay to prevent flickering
92
93  // Display tens digit on the second 7-segment display
94  digitalWrite(10, LOW);   // Disable the first digit
95  digitalWrite(11, HIGH);  // Enable the second digit (common anode)
96  displayDigit(tensDigit);
97  delay(5);  // Delay to prevent flickering
98}
99
100void displayDigit(int digit) {
101  // This function sets the appropriate segment pins LOW or HIGH
102  // to display the given digit on a common anode display.
103  switch (digit) {
104    case 0:
105      digitalWrite(segA, LOW);
106      digitalWrite(segB, LOW);
107      digitalWrite(segC, LOW);
108      digitalWrite(segD, LOW);
109      digitalWrite(segE, LOW);
110      digitalWrite(segF, LOW);
111      digitalWrite(segG, HIGH);
112      digitalWrite(segDP, HIGH); // Decimal point off
113      break;
114    case 1:
115      digitalWrite(segA, HIGH);
116      digitalWrite(segB, LOW);
117      digitalWrite(segC, LOW);
118      digitalWrite(segD, HIGH);
119      digitalWrite(segE, HIGH);
120      digitalWrite(segF, HIGH);
121      digitalWrite(segG, HIGH);
122      digitalWrite(segDP, HIGH); // Decimal point off
123      break;
124    case 2:
125      digitalWrite(segA, LOW);
126      digitalWrite(segB, LOW);
127      digitalWrite(segC, HIGH);
128      digitalWrite(segD, LOW);
129      digitalWrite(segE, LOW);
130      digitalWrite(segF, HIGH);
131      digitalWrite(segG, LOW);
132      digitalWrite(segDP, HIGH); // Decimal point off
133      break;
134    case 3:
135      digitalWrite(segA, LOW);
136      digitalWrite(segB, LOW);
137      digitalWrite(segC, LOW);
138      digitalWrite(segD, LOW);
139      digitalWrite(segE, HIGH);
140      digitalWrite(segF, HIGH);
141      digitalWrite(segG, LOW);
142      digitalWrite(segDP, HIGH); // Decimal point off
143      break;
144    case 4:
145      digitalWrite(segA, HIGH);
146      digitalWrite(segB, LOW);
147      digitalWrite(segC, LOW);
148      digitalWrite(segD, HIGH);
149      digitalWrite(segE, HIGH);
150      digitalWrite(segF, LOW);
151      digitalWrite(segG, LOW);
152      digitalWrite(segDP, HIGH); // Decimal point off
153      break;
154    case 5:
155      digitalWrite(segA, LOW);
156      digitalWrite(segB, HIGH);
157      digitalWrite(segC, LOW);
158      digitalWrite(segD, LOW);
159      digitalWrite(segE, HIGH);
160      digitalWrite(segF, LOW);
161      digitalWrite(segG, LOW);
162      digitalWrite(segDP, HIGH); // Decimal point off
163      break;
164    case 6:
165      digitalWrite(segA, LOW);
166      digitalWrite(segB, HIGH);
167      digitalWrite(segC, LOW);
168      digitalWrite(segD, LOW);
169      digitalWrite(segE, LOW);
170      digitalWrite(segF, LOW);
171      digitalWrite(segG, LOW);
172      digitalWrite(segDP, HIGH); // Decimal point off
173      break;
174    case 7:
175      digitalWrite(segA, LOW);
176      digitalWrite(segB, LOW);
177      digitalWrite(segC, LOW);
178      digitalWrite(segD, HIGH);
179      digitalWrite(segE, HIGH);
180      digitalWrite(segF, HIGH);
181      digitalWrite(segG, HIGH);
182      digitalWrite(segDP, HIGH); // Decimal point off
183      break;
184    case 8:
185      digitalWrite(segA, LOW);
186      digitalWrite(segB, LOW);
187      digitalWrite(segC, LOW);
188      digitalWrite(segD, LOW);
189      digitalWrite(segE, LOW);
190      digitalWrite(segF, LOW);
191      digitalWrite(segG, LOW);
192      digitalWrite(segDP, HIGH); // Decimal point off
193      break;
194    case 9:
195      digitalWrite(segA, LOW);
196      digitalWrite(segB, LOW);
197      digitalWrite(segC, LOW);
198      digitalWrite(segD, LOW);
199      digitalWrite(segE, HIGH);
200      digitalWrite(segF, LOW);
201      digitalWrite(segG, LOW);
202      digitalWrite(segDP, HIGH); // Decimal point off
203      break;
204    default:
205      // Turn off all segments for unknown digits
206      for (int i = 2; i <= 9; i++) {
207        digitalWrite(i, HIGH); 
208      }
209      break;
210  }
211}