The article is in the August 1997 Popular Electronics Mag.

At 04:27 AM 7/9/97 +0200, you wrote:
>eric naus wrote:
>>
>> Hi there again,
>>
>> The article uses the 1490 digital compass IC.
>> Further it states  that it contains a miniature rotor on jewel bearings
>> surrounded by 4 solid state Hall effect IC's.
>> Also the device must be held in its verticle position.
>> Cost of the IC is $15.00.
>>
>
>can anybody tell an exact parmunber ?
>I'm very interested in building such a project .
>
>bye
>charley
>