From: Robin Hollands Subject: Re: TECH: A crazy Power Glove Date: 26 Feb 1996 11:45:10 GMT Message-ID: <4gs6g6$g9h@bignews.shef.ac.uk> Organization: Automatic Control & Systems Engineering, University of Sheffield From: Robin Hollands > > I bought a Power Glove some days ago and I am feeling that it >wants to make me crazy. I tried to use the Glove with REND386 and >WorldBuilder but had some problems. It seems to be crazy. It flies >very quickly on the screen WITHOUT any glove movement. I am using a >486 DX4 100 w/ 16Mb and Win95.I tried the same programs in a DOS windo >w and in the DOS Prompt. I also test the glove with some programs >that just read the glove moveme nts and print it on a text screen. The >problems didn't disappear. > Since your glove finger readings seem to be OK, it would appear that the environment that you're using the glove in is the most suspect. The glove position readings rely on timing the flight of ultrasonic pulses from the glove to the the receiver frame. If there is any surplus ultrasonic in the environment (e.g. from computer equipment, animals, keys etc.), then this could affect your readings and produce the effect you observed. Try positioning the receiver frame away from your monitor to avoid an ultrasonic interference from this. Putting cushions behind the frame will also reduce the ultrasonic pulses reflections off of any nearby objects. If these fail, try using the Powerglove in a completely different location. The interface to the glove uses some very odd timing algorithms, and getting these right can be tricky, hence the removal of support for the Powerglove in AVRIL. It's possible that using the glove on a relatively fast machine has caused timing problems (although this is unlikely since you can read the fingers), so try the glove on something slower. The Powerglove has always been peculiar so good luck! Here's looking forward to the new PC Powerglove :-) Cheers, Robin (UK VR-SIG Chairman)