Any links for opportunities to purchase the screens that are used on saws? Jim
-----Original Message----- From: Jon Elson [mailto:el...@pico-systems.com] Sent: Thursday, October 21, 2010 8:58 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Suitable touchscreen? Caner wrote: > Hi, > > Which is the best choice of touchscreen for industrial usage? > There are several kinds of vandal-proof, water-proof, dust-proof SAW > screens, also different which technology is more useful such as surface > acoustic wave, resistive or infrared? > > Infrared has very low resolution. No mouse-like action, you have a coarse "pixel" at the intersection of every V and H beam of light. So, the number of pixels is the number of H sensors x the number of V sensors. Resistive requires a pair of plastic resistive sheets that are held apart by a small air gap. When you press, you touch the sheets together, the resistive layers allow the circuits to measure where the touch is. These sheets can be damaged or just wear out. The SAW screens have a glass plate, so it is quite tough. Jon ---------------------------------------------------------------------------- -- Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
