my plans to re-build my r/c transmitter in a ps2 pad are starting to fall through. all my through hole parts are just to damn big to get it all in the case. ive got rid of a whole matrix row, moved the voltage regulators and filtering caps for said regulators off the board (and onto another small board that will fit in one of the grips), now im somewhat concerned that there is no room for the dip chip mcu (figure i will need an surface mount package instead). i figure i could drop the mcu voltage down to 3.3 (one regulator for everything instead of 2) and run it at 8 mhz on the internal oscilator to get rid of the crystal and its caps. i probibly have more filtering capacitance than i need, and can dictch some of those. i suppose i can do away with the i2c/analog expansion port and mode switch feature too, but i really wanted that. so parts is the only option. now i need new mcus, new regulators, etc. this project just got shelved.