I have told you in one of my posts that I was building a robot to patrol my property and for that reason it had to be able to navigate most any terrain. I have decided that it needs to be robust so that means it will have larger electric motors than most robots out there. Also, it would need a pretty large amount of energy to be able to operate for long periods of time. That is why I have decided to use car batteries for power. I am using two electric motors for this robot, one for moving the rack and pinion gears to steer the front wheels and the other for driving the rear wheels. If I were to use a single car battery, how could I safely draw power from the battery for powering the wheels, steering, and powering the microcontroller? What would I have to use to lower the voltage so that the microcontroller and other small electronic components do not get fried? Any suggestions will be greatly appeciated, thank you for your time.