Jee Labs Talk

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1. yaba
   

   Hi guys,
   So I bought this Chacon power outlets, working at 433,92Mhz, 4 chans, ON and OFF, no Dimmer option in this model. I've researched a little and found no description of the protocol.
   Ref: 54656; Type: EMW200TC
   Having few resources; just a bus pirate, jeenode v4, and some gadgets, I can't do a good reverse engineering of the protocol.
   So, I picked up Alinco DJ-X3 scanner, tunned on 433,92Mhz and recorded the audio burst.
   Note: I'm not using discriminator output :|
   Is it possible to decode from here?!
   I've uploaded a sample:
   http://uploading.com/files/7f82c2ff/chaconsamplech1OFF.wav/
   If someone could help, -> I'm not asking to do it for me <-, but give some enlightment, some tips. I already know Chacon is using this:
   http://www.rfxcom.com/descr433X10Oregon.htm
   and saw this post: http://www.domoticaforum.eu/viewtopic.php?f=27&t=4741
   But I don't understand what does this means:
   "To control the Chacon devices with program buttons you have to use the AC codes (also used for KAKU and HE UK) To control the Chacon devices with address wheels you have to use the ARC codes in the RFXCOM transmitter."
   Note: I have the second version; devices with address wheels, So... No KAKU for me :(
   

   Thank you so much.

   Posted 04/07/2010 14:37:09

2. yaba
   

   Well, just disassembled the remote control. Funny, the status LED is in the Data Out line of SC2262 :) Now I can study what does this send out, without receiver :)

   Posted 05/07/2010 19:24:36

3. yaba
   

   Using this:
   http://news.jeelabs.org/2010/04/13/an-ook-scope/
   and the remote control digital out as if it was a receiver
   I was able to get what the remote sends, however... I've tried to replicate, and doesn't work.... timing issues?!?!? help :|

   Posted 07/07/2010 00:46:43

4. jcw
   

   Are you sending the signal with rf12onOff() ?

   There is some asymmetry involved in turning things on and off, see the notes in the fs20demo sketch (RF12 lib). Note the +150 and -200 corrections.

   Maybe that can help you improve the emitted signal timings?

   Posted 07/07/2010 00:58:41

5. yaba
   

   I based my code on loomi's code as in this post:
   
   Yes, it has those corrections, and 3 variables so that I can adjust the timing in real time via serial. Maybe this is the problem? the cpu cycles that the jeenode needs to read the input?! I don't know, i'm really new to Arduino :|

   Posted 07/07/2010 08:13:09