[Al Skierkiewicz]

Under the current rules, you can feed a custom circuit through a small breaker on the PD under R46 with a smaller fuse on the custom circuit. You may not use the power supplies on the PD for anything other than the cRio, radio and camera. A small three terminal regulator and a few components on a small, insulated, custom circuit is an appropriate method of supplying 5 volts to another custom circuit.