[linux-elitists] inside MS Bluetooth keyboard (fwd)

Eugen Leitl eugen@leitl.org
Sat Jan 18 03:34:11 PST 2003

---------- Forwarded message ----------
Date: Sat, 18 Jan 2003 11:04:58 +0100 (CET)
From: Ralf Ackermann <rac@KOM.tu-darmstadt.de>
Reply-To: wear-hard@haven.org
To: Wearable Mailing List <wear-hard@haven.org>
Cc: bluez-devel@lists.sourceforge.net, rac@iptel-now.de
Subject: inside MS Bluetooth keyboard
Resent-Date: Sat, 18 Jan 2003 05:08:23 -0500
Resent-From: wear-hard@haven.org


i put infos and links on using the MS Bluetooth Optical Desktop under
Linux on
(Many thanks to Peter Klausler for his page and the recent Linux driver!)

The page also shows 2 pictures of the PCB in the keyboard - it's
relatively small and i guess it has potential for reuse in other context
(e.g. in a wireless Twiddler or Twiddler-like chording keyboard that uses

The "Optical Desktop" is far from "cheap" - but at least at the moment
it's less expensive then serially attached BT modules (at least from what
i know).
Does anybody know more on that topic:
 - BT modules that easily interface with uCs (and are not to expensive)
 - uCs with USB host functionality that easily interface with the
     relatively cheap USB BT modules

Also - does anybody know more about the uC (Winbond W78LE812F-24) / BT
module cobination in the mentioned keyboard?
I'm hoping to collect some more info.

best regards

 Hosting the IP Telephony Field Trial for the Darmstadt Region
Ralf Ackermann                _         rac@KOM.tu-darmstadt.de
Multimedia Communications |/ | | |\/|           Merckstrasse 25
                          |\ |_| |  |  64283 Darmstadt, Germany
Tel.: (+49) 6151 16-6138                Fax: (+49) 6151 16-6152

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