>Andy Kunz said that the integration can be used for directional control. >I'd say that it can be used, but with great caution. This type of sensor >drifts a lot and it cannot really be relied on for direction control. A >compass module from Jameco will do this much better imho. It would also be >illegal to use it for this in some countries. Actually, the drift over a 15-minute flight (typical) is very little, especially if the pilot has taken the recommended precautions of putting the bird out on the flight line to get the temps up. He'd have a pretty tough time flying it if he pulled it out of his air-conditioned car and flew over a hot black runway, surely, but otherwise they are adequately stable. Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================