Hit problem with REMOTE CONTROL SOCKETS 433hz tutorial

[espruino-discuss3]

Posted at 2014-06-28 by yayAdrian

Hi,
I've been following the REMOTE CONTROL SOCKETS tutorial, it was all going well.
Based on the photo in the tutorial I'm using the same remote and plug socket.
I was able to connect to pick up the remote controls "messages" (although I did use the transmitter with 4pins)

Having received codes (e.g. 0b1110010111111111000011100) I changed the setup to be a transmitter. (again using the transmitter with 4 pins only 3 pins connected)

This is where I get stuck.
I used the send code in the tutorial but none of my plugs turn on or off.
I double checked, and using the remote control it works fine.

I have recreated all of the wiring but still no luck.

Any tips on how I can go about debugging this or figuring out what is wrong?

[espruino-discuss3]

Posted at 2014-06-28 by Pumych

I have the same receiver and transmitter as on this image:
After some tests I found that left one on the image is the transmitter (3 pins) and right one is the receiver (4 pins)

I using the code from example, here are my exact code with connections:

/**
  On press button BTN1 send bits (CODE variable) from transmitter (A1) to receiver (A0) multiple times. Blue LED blinking on send data, green LED blinking on receive data.
  
  Transmitter:
    GND <-> GND
    VCC <-> Bat
    ATAD <-> A1
    
  Receiver:
    GND <-> GND
    VCC <-> 3.3 (If using Bat there are many errors that we get on input)
    DATA1 OR DATA2 <-> A0
*/

var t,n, counter = 0;

// When the signal rises, check if it was after ~5ms of delay - if so (and if we have a code) display it.
function sigOn(e) {
 // console.log('sigOn:', getTime());
  var d = e.time-t;
  if (d>0.005 && n>0) {
    console.log(counter++, ":0b"+n.toString(2));
    n=0;
  }
  t = e.time;
  LED2.write(1);
}

// When the signal falls, measure the length of our pulse. 
// If it was within range, record a 1 or a 0 depending on the length. 
// If it wasn't in range, zero it
function sigOff(e) {
 // console.log('sigOff:', getTime());
  var d = e.time-t;
  t = e.time;
  if (d>0.0001 && d<0.001)
    n = (n<<1) | ((d>=0.0004)?1:0);
  else
    n=0;
  LED2.write(0);
}

setWatch(sigOn,A0,{repeat:true,edge:"rising"});
setWatch(sigOff,A0,{repeat:true,edge:"falling"});

var TX = A1;
var CODE = 0b10100000111111101110;

function sendCommand(command) {
  LED3. write(1);
  var bits = (CODE & ~0b11111) | command;
  for (var i=24;i>=0;i--) {
    if ((bits>>i)&1) {
      digitalPulse(TX,1,0.9);
      digitalPulse(TX,0,0.3);
    } else {
      digitalPulse(TX,1,0.3);
      digitalPulse(TX,0,0.9);
    }
  }
  digitalPulse(TX,1,0.001);
  LED3. write(0);
}

function sendMultiple(command) {
  var n = 9;
  var interval = setInterval(function() {
    sendCommand(command);
    if (n-- < 0) clearInterval(interval);
  }, 50);
}

var socketOn = false;
setWatch(function() {
  socketOn = !socketOn;
  sendMultiple(socketOn ? 0b11110 : 0b01110);
}, BTN1, { repeat:true, edge:"rising", debounce:10 });


// A1 -> transmitter (3 wires) green
// A0 -> receiver (4 wires) yellow

Hope this helps, LMK if you need some help, I passed it before few days. :)

BTW, how did you checked the remote control that it works fine?

PS: Here is additional good explanation for the code if you need it.

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Posted at 2014-06-28 by yayAdrian

Thanks so much.
I had the transmitter and receiver the wrong way around.

Using your code I've now got a switch turning on and off! :)
Now I just need to figure out why only "channel 1" switches work and not 4.

Am I correct in thinking all I need to change is the CODE variable?

For channel 4 I get this output: 0b1110010111111111000011100
So I replace the current string in code with that but it still turns on channel 1.

Thanks again for your help.

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Posted at 2014-06-28 by Pumych

@yayadrian what do you mean "got a switch" and "channel"? Can you please add more details for what would be done? Thanks

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Posted at 2014-06-28 by yayAdrian

Sorry,
Switch = wall plug
channel = the buttons on the remote say 1, 2, 3, 4

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Posted at 2014-06-28 by Pumych

Still didn't tested the remote, it on it's way from Hong Kong , I sending and receiving the bits on the same board :)
But lets try to understand it.
Does each channel sends different code? just try to debug it with console.log()

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Posted at 2014-06-28 by yayAdrian

So I went back to basics with the code and found that

sendMultiple(socketOn ? 0b11110 : 0b01110);

Was causing me the problem. I replaced that by passing the full code (e.g. 4 = 0b1110010111111111000011100) and I am able to turn all of the channels/1,2,3,4 on and off.
Thanks for your help. Hope you get your remotes and switches soon.

---

Posted at 2014-06-30 by @gfwilliams

Glad you got it working eventually!

@yayadrian: Did you change the line 'CODE=' in the code that you put into Espruino? If you didn't it may explain why you had to put the full code into sendMultiple