[Jared]

If you're just powering electronics, then a 12 volt supply good for a few amps should be just fine. I don't know exactly what type of power supply the PDB has for the cRIO, but I know some supplies designed for batteries don't like to be powered from another supply, so power your cRIO-II directly from the 12 volt supply.

If you're powering a drive base, then no, not unless you have a really expensive supply. At stall, you can draw a few hundred amps at 12 volts. Even if you did have a supply, it is likely that a robot's sudden current spikes could trip the typical 15 or 20 amp breaker that powers the wall outlets.