SV: [sdiy] More on LVDT for keyboards...
dalenkarl at yahoo.se
Fri Feb 15 23:14:50 CET 2008
Forget all those special LVDT decoder chips, they cost a fortune,
you can implement a very effective multiplexed quadrature LVDT decoder
in any decent 8bitter MCU. Use one PWM as generator, AD or 2 Compare
channels as decoder. :-)
Well, there are a dirt cheap cap sensor chip like CS209. (On semi)
--- Jim Patchell <patchell at cox.net> skrev:
> In doing research...turns out there are chips for processing LVDT's that
> address the drift problems...
> The down side...
> Those chips cost ~$25 each...
> But...I think I can figure out something along those lines to cut costs
> (DIY solution of course)...
> Synth-diy mailing list
> Synth-diy at synth-diy.org
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