Perhaps this might work at the core?=20 http://www.ti.com/product/ldc1614/description They have a tool on that page for designing a coil on a circuit board. *------------------------------ The LDC1612 and LDC1614 are 2- and 4-channel, 28-bit inductance to=20 digital converters (LDCs) for inductive sensing solutions. With multiple=20 channels and support for remote sensing, the LDC1612 and LDC1614 enable=20 the performance and reliability benefits of inductive sensing to be=20 realized at minimal cost and power. The products are easy to use, only=20 requiring that the sensor frequency be within 1 kHz and 10 MHz to begin=20 sensing. The wide 1 kHz to 10 MHz sensor frequency range also enables=20 use of very small PCB coils, further reducing sensing solution cost and=20 size. *------------------------------ On 31/07/2015 9:47 p.m., Mike Hord wrote: > Hi all- > > A complaint I've long had about video game joysticks is the relatively hi= gh > deflection > they have during use. I'm not much of a gamer, but lately I've been sucke= d > into the > re-release of the old Star Wars X-Wing series games. > > I'd *like* to try and DIY a low-deflection force sensitive (not The Force= , > mind you) > joystick, but I'm kind of having a hard time figuring out how to do this. > There are > commercial options but they are $200+. > > I've toyed with the idea of strain gauges but they tend to be both pricey > and finicky. > I'm kind of trying to wrap my head around a way to use a force sensitive > resistor to > get a measure of the force being applied, then some other means to > calculate the > vector. > > Any ideas? Bonus points if it uses mainly parts from SparkFun.com; I can > use it as > an excuse to write a tutorial or blog post and get the parts for free. ;-= ) > > Mike --=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 .