Question

• Control the Arduino so it checks an entered pattern, if it is equal to"11112222", then the temperature value should be printed on LCD, and a signal with 50% duty cycle should be sent to LED.

i want an arduino code for this

Answer 1

ANSWER

Hi here is your answer. Here i am using follwing components

1)Aurduio UNO R3

2)LCD

3)Temperature Sensor TMP36

Here I created a device, when 11112222 is passed the temp value will print. Other Times it will show off.

Circute

Name 6 DIGITAL PWM 2 O UNO ARDUINO ghi POWER ANALOGIN

SKETCH

/*
  The circuit:LCD RS pin to digital pin 12,LCD Enable pin to digital pin 11,
              LCD D4 pin to digital pin 5,LCD D5 pin to digital pin 4,
              LCD D6 pin to digital pin 3,LCD D7 pin to digital pin 2,R/W pin to ground,VSS pin to ground

              VCC pin to 5V,10K resistor,ends to +5V and ground,wiper to LCD VO pin (pin 3)

This code available when simulate with TinkerCard(only for lcd)
*/

// include the library code:
#include <LiquidCrystal.h>
int outputpin= 0;
const int numRows= 4;
const int numCols= 20;


// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);



void setup() {
  Serial.begin(9600);
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
//goto first column (column 0) and first line (Line 0)

 //Print at cursor Location

 //Print at cursor location
}

void loop() {
  
  String len; 
    Serial.print ("\r\nPlease type something: ");  // this is used for read the value from serial monitor
    len=Serial.readString();
    Serial.print ("\r\nYou typed: \"");
    Serial.print (len);
  if(len=="11112222"){
int rawvoltage= analogRead(outputpin);
float millivolts= (rawvoltage/1024.0) * 5000;
float fahrenheit= millivolts/10;
  lcd.setCursor(0,1); //goto first column (column 0) and second line (line 1)

lcd.print("Temp F = ");
  lcd.print(fahrenheit);
    lcd.setCursor(6, 0);
    delay(3000);
    lcd.clear();
  }
  else if(len=="")
  {
    lcd.setCursor(0,1); //goto first column (column 0) and second line (line 1)
    lcd.print("off ");
    lcd.setCursor(6, 0);
    Serial.print("Please enter correct ssequence");
  }

}

Output

Temperature Sensor (TMP36) Text Name 6 DIGITALIPWM- O UNO ARDUINO POWER ANALOG IN } i 22 76 77 lcd.print("Temp F = "); 78 lcd.print(fahrenheit); 79 lcd.setCursor(6, 0); 80 delay(3000); 81 lcd.clear(); 82 } 83 else if (len=="") 84 { 85 lcd.setCursor(0,1); //goto first column (col 86 lcd.print("off "); 87 lcd.setCursor(6, 0); 88 Serial.print("Please enter correct ssequence 89 90 91 ] 92 93 Serial Monitor You typed: "Please enter correct ssequence Please type something: Please type something: You typed: "Please enter correct ssequence Please type something: You typed: "Please enter correct ssequence Please type something: You typed: "11112222 Temp F = 135.7

Temperature Sensor (TMP36] Text 1 (Arduinc Name 6 } DIGITALPWM O UNO { ARDUINO T POWER ANALOG IN } 76 77 lcd.print("Temp F = "); 78 lcd.print(fahrenheit); 79 lcd.setCursor(6, 0); 80 delay(3000); 81 lcd.clear(); 82 83 else if(len=="") 84 85 lcd.setCursor(0,1); //goto first column (column 0) 86 lcd.print("off"); 87 lcd.setCursor(6, 0); 88 Serial.print("Please enter correct ssequence"); 89 90 91 92 93 Serial Monitor Please type something: You typed: "Please enter correct ssequence Please type something: Please type something: You typed: "Please enter correct ssequence Please type something: You typed: "Please enter correct ssequence Please type something: off 11112222 Send

**** Please note Here we can add LED easily. Just add code in the if condition for , but before code please setup pin, and values.

any doubts please comment....and upvote too...

Thanks in advance