PSN-L Email List Message

Subject: Re: New Seismo
From: Brett Nordgren brett3nt@.............
Date: Sun, 31 Jul 2011 10:55:33 -0400


Actually it's Dave Nelson's (CA) invention.  Really cute with rather 
surprisingly good performance.

Details at:

I think there are a number of these in kit form with finished circuit 
boards that he's had around for a while.


At 09:40 AM 7/31/2011, you wrote:
>Boy, I'd like to see what you have inside of those little blue 
>boxes, and I bet I'm not the only one.  Do you have more information 
>on this design?
>On 7/31/2011 12:40 AM, Brett Nordgren wrote:
>>Just for laughs, here's the other end of the specturm in regards to mass.
>>They use an effective mass of 19 grams, and don't do badly at all.
>>Design by the 'other' Dave Nelson.


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