So coming back to where we started:

1) what type of robot static or moving 2) does something useful like make chappatis, vaccum the floor, fetch the booze or kill ur neighbour or some proof of concept gadget. 3) what platform x86 power hog or esoteric xilinx / altera sparc/nios cpu, or arm 4) what linux rtai, plane vanilla, uclinux

rgds jtd