Analysing the code of radiocontrolled power outlets

Other Hardware Home Automation
1

I bought some radiocontrolled power switches(bauhaus voltomat) here in sweden but they are with german writing, rc-switch does not support these switches yet, i managed to record the handremote and now i wonder which tools i should use next to get further information about the used protokoll, would be great if it lead to enough information so these could be supported in other librarys in the future.

I used an SDR strick to record the signal of the first on button three times and now i have no clue how to go further and or which other outlets might use the same kind of encoding, so far i only had switches with 10dips which are well supported. These learn the code in the first 5 seconds after connecting them to electricity from the transmitted code.

Here my recording with 2,4mhz samplingrate, i noticed the signals are also more chopped then the ones of my 5dip remotes:

thx!

Yaku

2

there is a german page that deals with decoding and analyzing.
http://www.dserv01.de/howtos/funksteckdose-fernsteuern-mit-arduino/

this picture (taken from there) shows how to decode a recorded signal:

some more great links regarding RF decoding:
http://tinkerman.eldiariblau.net/decoding-433mhz-rf-data-from-wireless-switches-the-data/
http://blog.sui.li/2011/04/12/163/

3

yes, well i am not really happy with the manual counting of the bits but that´s just lazy me, i have one of my switches working on and off through counting the activation times of the 433mhz.
Actually i think you might be interested in buying an SDR stick because it´s much simpler and better then using a soundcard, there is a very good 6-6,50€ offer at the moment:

http://www.ebay.de/itm/AGH-Chic-Hot-RTL-SDR-FM-DAB-DVB-T-Dongle-Stick-RTL2832-R820T-SPC-0155-/131114030555?pt=US_Video_Capture_TV_Tuner_Cards&hash=item1e870155db&clk_rvr_id=600794326272

Then you also see what´s wrong with the transmission in comparison to the original remote and a lot less noise, at least for me.