Re: Cost of 1,000,000 gps modules + other bits?
- From: bigcat@xxxxxxxxxxx
- Date: 3 Jul 2005 05:33:32 -0700
Ian Stirling wrote:
> bigcat@xxxxxxxxxxx wrote:
> > Hi
> >
> >
> > I'm not about to buy these, so theres no point asking suppliers, but I
> > need to get a rough idea of likely costs of some kit. It would consist
> > of a GPS receiver to work out where it is, some kind of simple procesor
> > to work out which direction it wants to go in to reach its target
> > destination, using a simplified map to avoid a limited number of
> > impassable obstacles. It will need a small solar panel and battery for
> > power, and include a few beefy solenoids that it switches on and off at
> > upto 1Hz.
> Right...
> GPS in bulk will cost you on the order of $20 (us).
> Define map.
world map, but with minimal detail. Merely needs to distinguish betwen
go and no go zones, with low resolution. 200 yards per pixel would be
absolutely fine, with 1 bit information depth.
Since the go and no go areas are mostly very large, (mainly countries
and continents) this info could be heavily compressed.
It might alternately be possible to rely on GPS derived info.
> > Equipment life need not be very long, as the kit will be destroyed
> > after typically around a year. So if 99% make it to 1 year that would
> > be acceptable. Module repair or maintenance will probably not be an
> > option.
> >
> > This lot would be made in volumes of 1,000,000 ish...
> >
> > Where do I even start costing this lot up? No, I dont have a cirtcuit
> > design, nor am I about to build them. At this point just need to get a
> > rough handle on cost to know if an idae's worth continuing with.
> You cost the bits.
yes... was just hoping for the chance to save some time here, since I
probably only need a very approx figure. Only if it makes sense at tis
stage is it worth going as far as a real design and costing.
> GPS $20,
sounds good
> then work out how much power the solenoids use, and if they are
> really the overall cheapest way of doing it (if the aim is to move the
> device, then they are almost certainly the wrong thing),
theyre just for control
> now take that
> power number, and go to various solar websites to work out how the solar
> cells will perform in your target location and orientation.
target location: all over the world. Orientation: every which way. I
think I now have another method of powering that would be better and
cheaper.
> Now, that gives you the size of the solar array and battery, which
> lets you cost them, ...
Yep. I want to do it the lazy way first, to see if its worth finding
out the figures for real.
A floppy drive has a similar amount of and type of stuff in it,
excluding the GPS, and costs 10 retail, so about 5 at the factory
gates. It includes the power source (the stepping motor), or something
very similar to it, the tronics, connectors, skeleton housing, testing
etc.
Add gps @20, Looks good.
All that remains is to get a ballpark on the price of the big egg.
Thank you, NT
.
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- From: bigcat
- Re: Cost of 1,000,000 gps modules + other bits?
- From: Ian Stirling
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