January 31, 2016 at 5:15 am #41422
I have a Somfy roller shuter system opperated with Somfy telis Rts remote 433.42Mhz. I was wondering it is possible to decode that remote with RF TOY like with Rf sockets and then operate the blinds remotely with Opensprinkler? That feature could be used for a lot of remotes on the market and could be a huge help for DIY home automation entusiasts .Somfy do have a lot off complicated programing and remote control systems but with Opensprinkler sounds more easy.
Same thing if you have garage opener with remote control is it possible to use the Opensprinkler to control the garage door?( or this is more complicated because some systems are using some kind of security codes)February 3, 2016 at 1:29 am #41449
Not sure about the RF protocol used in these remotes. If you search “arduino Somfy roller shutter” you can find plenty of DIY projects that used Arduino to control these roller shutters. Some of them are completely wired solutions, and some may be wireless (although the few I’ve seen are basically wiring Arduino to the remote buttons, essentially use digital pins to simulate clicking on the remote buttons, and none I’ve seen has decoded the signal yet).
About garage door: we are working (albeit slowly) to finalize OpenGarage (a WiFi-based garage door opener). I can share a few tips I learned about the security code: basically all garage door remotes use some sort of security code (rolling code), so it’s not possible to just sniff and reproduce the RF code to open the garage door. However, many garage door buttons are super simple: just a switch where when you short the two wires it toggles the door. So it’s very easy to use a relay wired in parallel to the garage door button wires, in order to trigger the same action. The only exception is security+ 2.0 (which is the new thing on more recent openers): in this case even the door button has a security chip hence it won’t work by just shorting the two wires. Instead, you can get s security+ 2.0 door button and solder two wires from the button, hence when you short those two wires it simulates a button press.
The more general option is to get a universal garage door remote, solder two wires to the button on the remote, and connect those wires to the relay. Again, shorting the two wires simulates a button click hence triggers the action.February 3, 2016 at 3:07 am #41453
Thank for the answer.
For the garage opener it works fine with the wires that i can connect also to the open close button,inside the garage.
With the blinds the idea was to use freguencies to comand the blinds because on telis4 remote you have to change channel for different blinds ,( one solution could be to asign all blinds to one telis1 remote and control them together and solder for the two buttons of the remote two channels of OS).
A point is that by using frequency control you don,t need this expansion module for Os, you can use the virtual expansion slots.
Decoding with Arduino is a ” little ” too complicated for me so for the time I am waiting maybe somebody finds a solution!
Thanks again and keep up with the good work!
StefanFebruary 16, 2016 at 11:32 pm #41527
A while back I published several blog posts about reverse engineer a number of wireless sensors:
It was a challenge but a really fun experience, and with it you can pretty much reverse engineer any fixed code (i.e. not rolling code like garage door remotes).
When I say solder wires, it’s soldering onto the remote, not the window blinds. If that still sounds messy, perhaps you can get a spare remote just to be used with Arduino. This way, you have one remote for manual control, and one soldered to Arduino for programmable control.
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