Sony HiR Compatibility

[tbdombrosky]

I have a Sony steering wheel remote (RM-X5S) and I can't get the USB-UIRT to even recognize a command from it. My USB-UIRT works fine with every other remote I've ever thrown at it. I'm not sure what frequency it uses. Is there any chance of support for this? If not, can someone point me in the direction of one that does or how to build one? Thanks.

Tom

[jrhees]

Tom,

Try going through the 'Learn' procedure so that you can see what frequency it is using...

-Jon

[tbdombrosky]

It doesn't make the led blink and the learn procedure doesn't return anything. It works with other remotes. Here's what I found in the empeg FAQ for my remote:

"For example, it's suspected that the Sony RM-X5S remote will probably not work with the player because it uses a high frequency band."

My learning remote wouldn't learn any of the buttons either.

Tom

[jrhees]

Tom,

A little research reveals that the Sony HiR remotes use a 455KHz carrier frequency.

There *are* parts available to receive this frequency, so a specially-loaded USB-UIRT is feasible (which would also require special firmware) to pull something like this off...

-Jon

[tbdombrosky]

No need to modify it. Do you know of any other solutions that can receive this signal? I see the Actisys 320L uses that frequency. I don't mind using two receivers. Thanks for everything so far.

Tom

[jrhees]

Yes I saw the Actisys too. Unfortunately, your guess is as good as mine on whether any intelligent will spill out of the Actisys or not. It is not intended as a remote control receiver, but rather an Infrared serial link.

-Jon

[tbdombrosky]

Would you happen to know how to build one (maybe a modification to some of the ones on the internet already)? I'm a software developer so I'm not too worried about the software part. Thanks.

Tom

[tbdombrosky]

I saw that the TSOP7000 IR Receiver Module takes 455khz. Any idea on how to hook this up to a serial port? Thanks.

Tom

[jrhees]

Yes, that's the IR receiver designed for HiR. You could feasibly hook that up to a status line on a serial port -- but the real trick would be processing the resulting signal on the PC in real time (especially behind the standard Windows serial driver). That's what the USB-UIRT micro does is process that signal and creates a 'code' from it.

-Jon

[tbdombrosky]

I bought two the 455khz ir modules. I really wanted to use it with Lirc. I'm going to try this first:

http://www.lirc.org/ir-audio.html

And if that doesn't work I'm going to try the status line on the serial port. Thanks for the help. If you have any other suggestions, I'd really appreciate it.

Does the decoding have to be done in realtime? What does the data look like when it leaves the ir module? Thanks.

Tom

[jrhees]

You will see demodulated (carrier removed) data leaving the module. However, since I've never seen the HiR protocol, it could look like anything...

-Jon