KFK-mpg

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• Sending Bits via Infrared.

  @KFK-mpg started

  • 12 comments
  • 4,050 views

  @Gordon replied
• Sending Bits via Infrared.

  in Projects • 9 years, 5 months

  

  Hey,
  i tested the other controller, on receiving data, and it is a little bit frustrating. Above, the description don`t works on this controller.

  For this pulse:

    var pulse = [0.6, gap, 1.0, gap, 0.6, gap, 1.0, gap, 1.0, gap];
  

  i get this console.log:

  1011
  

  I don`t know, where the problem is and which controller will be right....puh

  I used a normal IR LED and a vs1838b

  Sry, i don`t have an oscilloscope :(
  best regards

• Sending Bits via Infrared.

  in Projects • 9 years, 5 months

  

  Hey,
  thanks for your really good support. The LED is connected in right way. That was the first, what i checked. But it was a really nice thinking :)
  Yesterday, i tested a little bit and solve the problem. The solution is (for me) confusing and i don`t know the technical details.

  Sending a zero:

  [1.0, gap]
  

  Sending a 1:

  [gap, 1.0]
  

  and as last bit for end of transmitting:

  [gap]
  

  If you send no 'gap' as last, it won`t be shown the string in the console.

  Complete code for sending '101001':

  digitalWrite(B7, 0); // Set B7 to GND
  digitalWrite(A8, 1); // Set A8 to 3.3V
  // Because we're not using the module, we have to manually pull up the data pin
  pinMode(B6,"input_pullup");
  
  setInterval(function(){
    
    var gap = 0.5;
  //  var pulse = [0.6, gap, 0.6, gap, gap, 2.0, gap, gap, 0.6];
      var pulse = [gap, 1.0, 1.0, gap, gap, 1.0, 1.0, gap, 1.0, gap, gap, 1.0, gap];
  
    digitalWrite(LED1,1);
    
    analogWrite(A5, 0.9,{freq:38000});
    
    digitalPulse(A6, 1, pulse);
    
    digitalPulse(A6, 1, 0);
    
    digitalWrite(LED1,0);
  },1000);
  

  best regards

• Sending Bits via Infrared.

  in Projects • 9 years, 5 months

  

  Hi,

  thanks for your answer. It was very helpful. Now i tested with the follow code:

  Transmitter:

  digitalWrite(B7, 0);
  digitalWrite(A8, 1); 
  pinMode(B6,"input_pullup");
  
  setInterval(function(){
    
    var gap = 0.5;
    var pulse = [1.0, gap, 1.0, gap, 0.6, gap, 1.0];
    
    digitalWrite(LED1,1);
    
    analogWrite(A5, 0.9,{freq:38000});
    
    digitalPulse(A6, 1, pulse);
    
    digitalPulse(A6, 1, 0);
    
    digitalWrite(LED1,0);
  },1000);
  
  

  and Receiver code:

  digitalWrite(B7, 0); 
  digitalWrite(A8, 1); 
  
  require("IRReceiver").connect(B6, function(code) {
  
    console.log(code);
    
    if(code === '0010') digitalWrite(LED2, 1);
    
  });
  

  I get every time a '000' in the console and no LED will be switched on. Sometimes an '0001'. Is there way to transmit correctly or did i something wrong?

  Sry.

  best regards
  Daniel

• Sending Bits via Infrared.

  in Projects • 9 years, 5 months

  

  Hey,
  thanks for your reply. For correct understanding:

  If i use Gordon`s IRReciever (what i want), and sending a logical 1, i have to use at first:

  analogWrite(A5,0.9,{freq:38000});
  

  and than:

  digitalPulse(A6, 1, 1);
  

  and for a logical 0:

  digitalPulse(A6, 1, 0.8); //or less
  

  ?

  In my mind so i have to send '110':

  digitalPulse(A6, 1, [1,1, 0.8]);
  

  sry for my nooby question/post, but i only want to understand.

  best regards
  daniel

• Sending Bits via Infrared.

  in Projects • 9 years, 5 months

  

  Hi@all,

  i recieved 2 Picos and they are great. For Project, both have to communicate together over infrared. I have tested this tutorial . Receiving tv remote signals is no problem. But i have trouble with sending data. I want to send my own data like '10001111'. How can i do this? Have anyone an idea? I hope you can help me.

  best regards
  daniel