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Need help for IR remote control

Former Member

for eg. this is a code for switching leds on off with ir remote

 

 

in this when i press Forward button led light up

when i press Reverse button led1 light up

and when any thing else is pressed all go off

it act as a on off switch

i have to press some thing to turn led off

but i want it to act as a push button when Reverse button is pressed it light up and as soon as i release the reverse button it should go off

i tried to use while statment but using that nothing happen

on youtube there are many who have made ir cars but they press one buton to move it and again some other button to stop it

 

#include <IRremote.h>

 

 

int IR_Recv = 3;   //IR Receiver Pin 3

int led = 9;

int led1 = 10; 

int led2 = 11;

int led3 = 12;

 

 

IRrecv irrecv(IR_Recv);

decode_results results;

 

 

void setup(){

  Serial.begin(9600);  //starts serial communication

  irrecv.enableIRIn(); // Starts the receiver

  pinMode(led, OUTPUT);      // sets the digital pin as output

  pinMode(led1, OUTPUT);      // sets the digital pin as output

  pinMode(led2, OUTPUT);      // sets the digital pin as output

  pinMode(led3, OUTPUT);      // sets the digital pin as output

}

 

 

void loop(){

  //decodes the infrared input

  if (irrecv.decode(&results)){

    long int decCode = results.value;

    Serial.println(decCode);

   //switch case to use the selected remote control button

   switch (results.value){

      case 16722135: //when you press the Forward button

    

       digitalWrite(led,HIGH);

       digitalWrite(led1,LOW);

       digitalWrite(led2,LOW);

       digitalWrite(led3,LOW);

       break;

      

      case 16754775: //when you press the Reverse button

        digitalWrite(led1,HIGH);

        digitalWrite(led2,LOW);

        digitalWrite(led3,LOW);

        digitalWrite(led,LOW);

        break;

      

      case 16730295: //when you press the Mute button

           digitalWrite(led2,HIGH);

           digitalWrite(led3,LOW);

           digitalWrite(led1,LOW);

           digitalWrite(led,LOW);

        break;

      

      case 16724175: //when you press the Power button

          digitalWrite(led3,HIGH);  

          digitalWrite(led2,LOW);

          digitalWrite(led1,LOW);

          digitalWrite(led,LOW); 

      default:

      {

        digitalWrite(led,LOW);

        digitalWrite(led1,LOW);

        digitalWrite(led2,LOW);

        digitalWrite(led3,LOW);

      } 

  }

    irrecv.resume(); // Receives the next value from the button you press

  }

 

}

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  • 0

    What you need is a time-out for any command, IR only sends when you press a button and some but not all will repeat the command or send a repeat command that is not the same as the original command

     

    so you may need an additional case statement to account for a repeat cmmand (This is easily detected as you have a debug Serial.Println already for every command you receive.

     

    As you will not want the LED to go out immediately after you receive the command you need a delay

     

    this is best achieved using a statement like this

     

    const delayTime 1000 // command delay before LEDs are rest to off

    in timeoutLED = millis() + delayTime // setup the first timeout to ensure the LEDs will extinguish

    ....

    in the loop whenever you receive a valid command

     

    timeoutLED = millis() + delayTime // reset the delay as we just got another valid command

     

    now somewhere outside the case structure have this

     

    if (timeoutLED <= millis())

    {

    // turn off all the LEDs

    }

     

    as long as you keep getting a command the selected LED will remain on

    if no transmit is received for the time-out period then all the LEDs go off.

     

    You can shorten the delay by adjusting the cont value above. You want it to be a little longer than the repeat time of the IR remote so the command seems continuous, you should be able to get away with close to 100mS (My sample above has it at 1000mS (1Sec) right now)

  • 0 in reply to Robert Peter Oakes

    iif I don't want to use switch case in program is there a ankther way to do this

    like insted of switch can I use while loop for ir control

    if yes

    can any one show me how will it work

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