Kenwood Series 21

[Canavan, P. S \(UK - London\) <pca...@de...>]

Hi,
  I'm looking for some info on controlling my Kenwood Series 21 HiFi
from LIRC. I've searched the web and the mailing lists for anything
specific, and come up blank. I'll now explain why I've been looking for
"specific". There are two options:

1) IR sender. The system at least supports (?expects?) bi-directional
comms with its IR remote, and I've found info saying that Kenwood are
known to "sometimes" use an unusually high carrier frequency (455KHz
versus 30-40KHz). I know the system works with at least Kenwood's
GRC-150 (interactive LCD) and RC-S0506 (traditional) remote controls,
but I've not managed to open my RC-S unit to see what's in it (I could,
but I don't think I could close it again...).

2) There is a "remote control network" of some sort that interlinks the
only receiver, in the tuner\pre-amp, with the other components. It's a
3-wire connection, so if I get no better info I'm going to guess it's an
I2C link.


   Option 2, physically connecting to the "remote network", is preferred
if the main unit can accept as well as receive codes. Does anyone know
where I can get more info on either option? Has anyone else attempted a
hard-wired RC approach similar to (2), and\or an I2C control link? I've
found an I2C snooper that runs from a parallel port, and might also be
extensible for transmission, but have no idea how to tell which of the
wires on the HiFi is which without an oscilloscope (assuming it really
is I2C...).


Philip.


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address to use...
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