Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!samsung!uakari.primate.wisc.edu!dali.cs.montana.edu!milton!ron@vicorp.com From: ron@vicorp.com (Ron Peterson) Newsgroups: sci.virtual-worlds Subject: Re: Power Glove Interface Message-ID: <8131@milton.u.washington.edu> Date: 25 Sep 90 20:35:49 GMT References: <7992@milton.u.washington.edu> Sender: hlab@milton.u.washington.edu Organization: V. I. Corporation, Amherst, Massachusetts Lines: 32 Approved: hitl@hardy.u.washington.edu In article <7992@milton.u.washington.edu> totty%flute.cs.uiuc.edu@usc.edu (Brian Totty) writes: > > We have a hacked-up PowerGlove interface to generate some clocking > signals approximately compatible with the Eglowstein Byte article. > After some trouble, we think we might be getting some real data out. > Does anyone have any more detailed specs about clocking requirements, > data packet formats, etc. We are also worried because the centering > systems doesn't seem to work as in the glossy "Adventures of > Glove Master and Little Digit" instruction manual. The sensor > LEDs are either all on or all off. We are not able to get individual > LEDs to turn on/off based on glove motion. Is this a clocking > problem? If we get the clocking scheme working, we are going to > convert the data to RS232 and hook it up to a workstation. Anyone > want to share some wisdom? > I just recently hooked my PowerGlove up to my Amiga and was able to get all the LED's to light appropriately based on glove motion and finger flexing. All the programs described in the book (which determine how the motions are interpreted) work also (like the training mode that beeps when you go off center.) The Center button works too. The Byte article mentions that the length of the pulse is important (3-8 microseconds I think) so that's one thing you might try varying. I used pulses of about 7 microseconds. The article also says it is important to clock data out of the glove quickly and you can get a rough idea of the speed required from the photo they show of a logic analyzer screen showing the relationship of the clock, reset and data pulses. (Assuming the top pulse length is 4 us, it looks like they are sending out clocks every 20 us or so.) ron@vicorp.COM