[sdiy] Ensoniq patent, was: distance meter for keyboard, was: Where to get special white keys?

[Kyle Stephens]

You can get Hall sensors for $0.50/a pop here, and at $0.45 for 100+ quantities:

http://www.allelectronics.com/make-a-store/item/SS-19T/HALL-EFFECT-MAGNETIC-POSITION-SENSOR/-/1.html


_Kyle

--- On Sun, 3/1/09, Ingo Debus <igg.debus at t-online.de> wrote:

> From: Ingo Debus <igg.debus at t-online.de>
> Subject: Re: [sdiy] Ensoniq patent, was: distance meter for keyboard, was:  Where to get special white keys?
> To: "Synth DIY" <synth-diy at dropmix.xs4all.nl>
> Date: Sunday, March 1, 2009, 12:43 PM
> Am 01.03.2009 um 21:00 schrieb cheater cheater:
> 
> > OK, I've done a search in online patents databases
> and couldn't find
> > the patent for ensoniq's hall sensor stuff..
> 
> Hmmmm, did Ensoniq use Hall sensors for aftertouch at all?
> I seem to remember it was something different. Rainer?
> 
> A linear Hall sensor costs about 1$ (I think). Add the cost
> for a small magnet. For poly aftertouch this would increase
> the cost of a keyboard significantly.
> 
> Ingo
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