Two caveats to Dave's arguments: (1) is that Freescale, Atmel, and Microchip are making seperate microcontrollers from radios. You actually have to buy two chips to realize a mote/Zigbee solution. The CC2430, soon to be released, is the first single chip 802.15.4 radio/microcontroller solution.
(2) Zigbee is simply a protocol and could be implemented in TinyOS. Likewise, motes can run TinyOS, TinyOS with Zigbee, or embedded C with Zigbee. They're not constrained to any one technology. -Joe On Tue, 28 Dec 2004 22:59:09 -0500, David Bengtson <[EMAIL PROTECTED]> wrote: > Hi Dominique: > > If you are serious about developing some home automation product with a > Mote/TinyOS approach, you might want to seriously look at Zigbee. > (www.zigbee.com) There are several companies making integrated Zigbee > radio's with microcontrollers (Freescale, Atmel, Microchip come to > mind), with support and app's engineer's and volume pricing. > > As far as volume pricing, it's pretty reasonable that quantity 1 pricing > for something like a development board is order's of magnitude above > pricing for high volume production. Look at the digikey catalog, and see > how the prices roll off. I just priced an Atmel MEGA-128 > microcontroller, and here are the prices > > Quantity Unit Price > 1 $15.05 > 25 $9.45 > 100 $8.75 > > I'd guess that if you could get a serious, competitive bid price for > 100k/year, you'd be talking about $4.50 or so. > > Also, keep in mind that you wouldn't be paying these prices from Xbow, > you'd roll your own incorporated in whatever home automation product you > want. > > A decent target for pricing is 25 percent of you sale price is your > material price. If you are looking to sell something for $50, then your > material price should be no more than $12 if you want to have any hope > of making money at this. I suspect that the $1.00 price for the Spec is > based on a die size price only. It's a long way from where they are now > to a real product. > > Dave > > > Dominique Blas wrote: > > > Hi everybody, > > > > I'm new to tinyos and to the MOTES. > > My goal is to develop some kind of home automation with MOTES. > > > > By looking for the price of a single Xbow kit (802.15.4 for example) : I > > found this awfully expensive ! > > Berkeley claims that the latest generation mote - aka Spec - costs less > > that $1 in quantities. Fine, really fine. > > BUT, currently, a single MICAz module costs nearly $200 and a DOT sensor > > more that $100 ! > > > > Moreover the Stargate gateway (a simple PC board that costs between > > $100 and $200 and less that $100 if you choose the VIA processor > > family) is "offered" at nearly $3000 that is to say about 20x its price. > > > > Surely, it unuseful for me to try to market a product build with such > > MOTES : I will be well beyond the target market price for the kind of > > product I want to develop (a few dozens > > of dollars). > > > > Does anyone have any suggestion ? > > > > db > > > > > > _______________________________________________ > > Tinyos-users mailing list > > [email protected] > > http://mail.Millennium.Berkeley.EDU/mailman/listinfo/tinyos-users > > > > _______________________________________________ > Tinyos-users mailing list > [email protected] > http://mail.Millennium.Berkeley.EDU/mailman/listinfo/tinyos-users > _______________________________________________ Tinyos-users mailing list [email protected] http://mail.Millennium.Berkeley.EDU/mailman/listinfo/tinyos-users
