On 5/31/05, Jinx <joecolquitt@clear.net.nz> wrote:
> > interesting project, but at some point an accelerometer seems better
> > suited cost and size-wise.  It would be interesting to compare the two
> > methods side-by-side, though.
> 
> Well, I did some ringing around this morning. Could possibly do a little
> better than this but can't say if it's worth it until I get a sample of each
> 
> Freescale MMA7260Q, NZ$17.78, MOQ 75 (choke splutter)
> 
> Analog Devices ADXL202JE, NZ$18.45, MOQ 6
> 
> The prototype's UGN3503 is only $2
> 
> Not saying an accelerometer couldn't be used, wouldn't be ultimately
> better, and probably absorbable into the retail cost, but if the UGN3503
> idea can be tweaked for optimum performance it should be adequate

Memsic MXA2500GL is $8.90 buying single pieces through the
manufacturer's website.  It does not measure static acceleration
(e.g., gravity), but that isn't necessary for your application.
http://www.memsic.com/memsic/products/product.asp?prodid=56

You have to figure the time involved in cutting your ping-pong ball
and the failure rate and the insurance claims for when you slip and
cut your finger to really compare cost. :-)

Bradley

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