├── vehicle speed - arduino code.txt
└── vehicle speed control code.txt


/vehicle speed - arduino code.txt:
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 1 | #include <LiquidCrystal_I2C.h>
 2 | LiquidCrystal_I2C lcd(0x27, 16, 2);
 3 | #define relay 8
 4 | #define rf 2
 5 | void setup() 
 6 | {
 7 |    lcd.init();
 8 |   lcd.backlight();
 9 |   Serial.begin(9600);
10 |    pinMode(relay, OUTPUT);
11 |   pinMode(rf, INPUT);
12 |       delay(1000);    
13 |     digitalWrite(relay, HIGH);
14 |       delay(1000); 
15 |   lcd.setCursor(0, 0);
16 |   lcd.print(" SPEED CONTROL ");
17 |   lcd.setCursor(0, 1);
18 |   lcd.print("SCHOOL ZONE");
19 |    delay(2000); 
20 |    lcd.clear();
21 | }
22 | 
23 | void loop()
24 | {
25 |   
26 |   if(digitalRead(rf)==LOW)
27 |   {
28 |       lcd.setCursor(0, 0);
29 |     lcd.print(" SCHOOL ZONE ");
30 |     lcd.setCursor(0, 1);
31 |     lcd.print(" LOW SPEED ");
32 |         delay(1000);    
33 |     digitalWrite(relay, LOW); 
34 |      delay(2000); 
35 |      lcd.clear();
36 |   }
37 |   else
38 |   {
39 |            delay(2000);    
40 |     digitalWrite(relay, HIGH);
41 |       delay(1000);  
42 |         lcd.setCursor(0, 0);
43 |   lcd.print("  NORMAL ZONE ");
44 |    lcd.setCursor(0, 1);
45 |   lcd.print("  HIGH SPEED ");
46 |   delay(2000);
47 |       lcd.clear();
48 |   }
49 |     
50 | }


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/vehicle speed control code.txt:
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 1 | #include <LiquidCrystal_I2C.h>
 2 | LiquidCrystal_I2C lcd(0x27, 16, 2);
 3 | #define relay 8
 4 | #define rf 2
 5 | #define buzzer 9  
 6 | void setup() 
 7 | {
 8 |    lcd.init();
 9 |    lcd.backlight();
10 |    Serial.begin(9600);
11 |   
12 |    pinMode(relay, OUTPUT);
13 |    pinMode(rf, INPUT);
14 |    pinMode(buzzer, OUTPUT); 
15 |    
16 |    delay(1000);    
17 |    digitalWrite(relay, HIGH); 
18 |    digitalWrite(buzzer, LOW);
19 |    delay(1000); 
20 |    
21 |    lcd.setCursor(0, 0);
22 |    lcd.print(" SPEED CONTROL ");
23 |    lcd.setCursor(0, 1);
24 |    lcd.print("SCHOOL ZONE");
25 |    delay(2000); 
26 |    lcd.clear();
27 | }
28 | 
29 | void loop()
30 | {
31 |   if (digitalRead(rf) == LOW)  // School zone detected
32 |   {
33 |     lcd.setCursor(0, 0);
34 |     lcd.print(" SCHOOL ZONE ");
35 |     lcd.setCursor(0, 1);
36 |     lcd.print(" LOW SPEED ");
37 |     
38 |     digitalWrite(relay, LOW); 
39 |     digitalWrite(buzzer, HIGH);  
40 |     
41 |     delay(1000);    
42 |     lcd.clear();
43 |   }
44 |   else  
45 |   {
46 |     lcd.setCursor(0, 0);
47 |     lcd.print("  NORMAL ZONE ");
48 |     lcd.setCursor(0, 1);
49 |     lcd.print("  HIGH SPEED ");
50 |     
51 |     digitalWrite(relay, HIGH);  
52 |     digitalWrite(buzzer, LOW);   
53 |     
54 |     delay(2000);  
55 |     lcd.clear();
56 |   }
57 | }
58 | 


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