Wireless Digital Notice Board

1// https://www.youtube.com/channel/UCaXI2PcsTlH5g0et67kdD6g  //
2
3//  Wireless Digital Notice Board  //
4
5// By MOHD SOHAIL //
6
7
8
9
10
11#include  <LiquidCrystal.h>
12
13LiquidCrystal lcd(4, 5, 6, 7, 8, 9);
14
15
16
17#include  <SoftwareSerial.h>
18
19SoftwareSerial mySerial (2, 3);   //(RX, TX);
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21
22
23String  val = "No Data";
24
25String oldval;
26
27String newval = "No Data";
28
29int  i = 0;
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31
32
33void setup() 
34
35{
36
37 
38
39  lcd.begin();
40
41  mySerial.begin(9600);
42
43  Serial.begin(9600);
44
45  lcd.setCursor(0, 0);
46
47  lcd.print("    Digital    ");
48
49  lcd.setCursor(0, 1);
50
51  lcd.print("  Notice  Board ");
52
53  delay(3000);
54
55  lcd.clear();
56
57}
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59
60
61void  loop() 
62
63  {
64
65  val = mySerial.readString();
66
67  val.trim();
68
69  Serial.println(val);
70
71  if(val != oldval)
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73  {
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75    newval =  val;
76
77  }
78
79  val = oldval;
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81Serial.println(val);
82
83lcd.clear();
84
85lcd.setCursor(16,  1);
86
87lcd.print(newval);
88
89lcd.setCursor(16, 0);
90
91lcd.print("Notice:");
92
93for(int  counter = 0; counter < 24; counter++)
94
95{
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97lcd.scrollDisplayLeft();
98
99delay(500);
100
101
102
103}
104
105}