This is a multi-part message in MIME format. --------------080802050800080306050200 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Hi, PICfighters! I'am thinking about building a sort of simple but reliable joystick with maximum endurance. Today I found in my garage a variable aluminium capacitor, old thing bearings-based with 2 sections. What if I rearrange second section so, that it would lose capacitance when first section gain it when rotating. Then why not use those capacitor sections in PIC's main oscillators. Have look at attached .gif scheme. Why not then get this PICs connected Fosc/4 of each to Tmr0 of another for example. To count a frequency difference is a matter of programming technique.(Any ideas how to do it?) One of PICs may be attached to PC Com port or via programmable potentiometer to Game port. It seems, thermostability of the device should be quite tolerable, since odd harmonics of non-stability vanished due to a scheme symmetry. We have 16F870 for $3 each and MICROCHIP MCP42100-I/SL Digital Potentiometer, 256 steps, SPI, 100kohms, dual channel for 1.69$ (retail) here in the Ukraine. Plus $1 two-days delivery inside the country (microchip.com.ua). I've some doubt they can send abroad. To Olimex chaps: If the idea is new, get it work! :-) Please, any comments to the idea. How to build a simple & reliable vandal-proof joystick with maximum endurance? What other ideas about connecting to PC something in commercial purposes. Thanks. 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