- Could I just run the tlc5940 signal lines to each lamp? or would the distance of >10ft degrade the signal too much?
- put an arduino inside each lamp and connect all arduino's with the spi bus and have the master send out commands to six slaves.
- Best bet is to try it and see as it won't cost anything to do so. Might need to slow the SPI clock speed to be reliable.
- Maybe you could use something like MAX232 chips on the SPI CLK/DATA lines at each end to extend the distance of the SPI and save expense of extra Arduino's.