> Perhaps this might work at the core?
> http://www.ti.com/product/ldc1614/description
> They have a tool on that page for designing a coil on a circuit board.
>=20
> *------------------------------
> The LDC1612 and LDC1614 are 2- and 4-channel, 28-bit inductance to digita=
l
> converters (LDCs) for inductive sensing solutions. With multiple channels=
 and
> support for remote sensing, the LDC1612 and LDC1614 enable the
> performance and reliability benefits of inductive sensing to be realized =
at
> minimal cost and power. The products are easy to use, only requiring that
> the sensor frequency be within 1 kHz and 10 MHz to begin sensing. The wid=
e
> 1 kHz to 10 MHz sensor frequency range also enables use of very small PCB
> coils, further reducing sensing solution cost and size.
> *------------------------------

Hey, those look like nifty devices, might have a use for them.

Thanks for the pointer.



--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.