----- Original Message ----- From: "Youda He" To: "Microcontroller discussion list - Public." Sent: Sunday, May 02, 2010 9:29 PM Subject: Re: [EE] Find a Switch >This is a redesign of existing product, used in dusty environment, for >ramping up/down current and voltage setting. >The existing design use a roller switch for this (so you don't have to >click on up down arrow thousands of times) >Very much link the stereo equipment volume dial, the existing roller >goes bad easily... >I am trying to find a better replacement. I think that kind of switch is called a Rotary Pulse Switch, or Pulse/Rotation Sensor, but I may be wrong. These links might be of interest for a direct replacement (sounds like a non mechanical version would be ideal for dusty environment though if you can find one) : http://www.alps.com/cgi-bin/WebObjects/catalog.woa/wa/keyWordSearch?language=english&country=jp&top_mode=2003&key=SRBM1L http://www.mikesflightdeck.com/switches+indicators_1.htm (Where the top link came from, see under Heading An Alternative to a Rotary Encoder) -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist