Date: Thu, 29 Jun 2000 20:24:18 -0400 From: Brandon Fosdick <bfoz@glue.umd.edu> To: freebsd-small@freebsd.org Subject: OT: Embedded system suggestions Message-ID: <395BE8B2.176EE0F3@glue.umd.edu>
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I'm an embedded newbie and I don't know what to buy or where to look. Can you guys help me out? Basically I started a great big project to try and wire my house that I'm building. Here's what I have to hook up: ~120 digital inputs (SPST Wall switches, security contacts, etc...) ~76 12V coil mechanical relays (for switching lights, etc...) All of the relays are wired back to a central control closet. The switch wiring is routed back to three separate places in the house (2 upstairs, 1 downstairs), but I could route those back to the control room as well. I was thinking about 3, 48 line digital input boards (don't know where to get those) and maybe some digital output boards that can drive relays. Where do I find this stuff? Does it even exist? What kind of processors do I use? What kind of power supply do these systems need? I found a 216 line DIO board at www.icsadvent.com but it can't drive inductive loads (i.e.. the relays). If all else fails I'll use this board and just make a separate board with diodes and resistors for the relays. Thanks alot, Brandon -- bfoz@glue.umd.edu "Lead, follow, or get run over" "In life there are those who steer, and those who push" "I'm not impatient, the world is too slow" "Life is short, so have fun, play hard, and leave a good looking corpse" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-small" in the body of the message
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