From: "Virtual Worlds, Inc." Subject: Re: TECH: LCD Glasses Date: Fri, 10 May 1996 13:02:00 -0500 Dan Crevier wrote: >I do research on vision, and want to deliver a flickering stimulus. I >was thinking of getting some relatively cheap LCD glasses and >controlling them with a square-wave generator or other simple circuit, >but all of the cheap LCD glasses I've seen around are meant for >interfacing with a VGA signal. I was wondering if anyone knows the >specs to any of the glasses so that I could figure out how to control >the shutters directly. Any info would be appreciated. Yes, a square-wave generator with some simple circuit could probably be used to drive them. I took apart a StereoGraphics SimulEyes (TM) VR and looked at the signals with an oscilloscope. The signal to the glasses are square waves into the controller box and square waves to the glasses. So I imagine you can use another square wave to the controller box for you flicker stimulus. Let me know more details and I can help you further. If you want send them to my email to vworlds@vworld.com Have an Empowering Day! Paul Kilbride ============================================================ Virtual Worlds, Inc. for Virtual Reality on Your PC 290 E. Golf Road, Arlington Hts., IL 60005, USA phone: 847 290-9912 or 800 354-3659 fax: 847 290-9891 email: vworlds@vworlds.com web: http://www.vworlds.com/worlds/ ============================================================