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Subject: Re: [ltp] IBM HDAPS Someone interested? (Userspace accelerometer
	viewer)
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Paul Sladen <thinkpad@paul.sladen.org>
Cc: Alejandro Bonilla <abonilla@linuxwireless.org>,
       Vojtech Pavlik <vojtech@suse.cz>, Pavel Machek <pavel@suse.cz>,
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Date: Mon, 11 Jul 2005 15:26:57 +0100
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On Llu, 2005-07-11 at 10:42, Paul Sladen wrote:
>   theta = (N - 512) * 0.5
> 
> provides a surprisingly good approximation for pitch/roll values in degrees
> in the range (-90..+90) so I think the sensor can do ~= +/-2.5G .
> 
>   http://www.paul.sladen.org/thinkpad-r31/aps/accelerometer-screenshot.png (9kB)

Is the quality good enough to use it DEC itsy style as an input device
for games like Marble madness ?