RF Learning Remote Control

[Automate]

Over the years there have been lots of ways to "learn" IR remote commands and then be able to transmit them from a PC using devices such as the USBUIRT, GlobalCache etc.
 
Now, more and more devices are using RF instead of IR.
Many people have asked about a way to learn RF commands.
http://www.remotecentral.com/cgi-bin/mboard/rc-custom/thread.cgi?18759
http://www.avsforum.com/t/1374901/can-a-remote-learn-rf-signals
But no learning RF device for PCs is available.
 
I realize there are issues with RF devices where the antenna and everything has to be tuned for a specific frequency.  But for RF remotes most of the devices use either 315 Mhz or 433 Mhz.  So someone making a learning RF remote would need to sell at least two different models or give the user a way to select the frequency of their device but I don't see this as a major problem.
 
There is also the issue of rolling codes that are used for some security devices such as doors and alarms but many devices such as ceiling fans do not use a rolling code.
 
Here are some dirt cheap learning RF remotes 
http://www.rfcontrolsystem.com/index.php?cPath=281_394
Has anyone used something like this?
Why hasn't a company made a similar device with a USB/Serial/Ethernet connection that can be used for HA?
 
 
 
 
 
 
 
 

 

[az1324]

Rfxcom is probably the closest product, but I don't think it has any US certifications. There are lots of rules for operating at those frequencies, it is expensive to certify, lots of proprietary stuff across manufacturers to deal with for compatibility. One way systems are OK for remotes but not ideal for automation.

 

[Automate]

Yes, there is some cost associated with certification but even before there were commercial products there were DIY IR  solutions such as this.  http://www.engadget.com/2006/05/16/how-to-ir-remote-control-your-computer/
 
315 Mhz and 433 Mhz RF transceiver modules are available for $5 or less.  I'm surprised someone has not developed a DIY RF learning solution.
 
 

 

[Automate]

One way systems are OK for remotes but not ideal for automation.

 
Yes, its not ideal but many people have used one way IR reliability for years.
 
Also, when a Z-wave fan controller cost more than the whole ceiling fan, a cheaper solution is needed.

 

[az1324]

True, but IR is less prone to interference and signal issues especially when the emitter is stuck right up to the receiver.

There is certainly the opportunity for a DIY project. However most of the existing DIY projects are application specific and no need for a universal remote cloner since it would just be extra work. Most people opt for the easiest solution which is taking an existing remote and automating the buttons.

RF modules are easily and cheaply available and as long as antenna specs are followed & no amplification is added it is likely to not violate any regulations. However I believe even to experiment at these frequencies you are supposed to get a temporary FCC license until you can certify your product. Lots of ceiling fans operate at various unique frequencies between 300 and 310 MHz also.