Power supply to robot components

I am assembling a robot that needs power for the following components:
1. VIA EPIA MII10000 Mini-ITX motherboard that requires
+/-12vdc, +/-5vdc, and +3.3vdc (in total 5-10W I guess)
2. OOBOT40 PIC controller http://www.oricomtech.com/oobot41.htm that needs 8-15vdc
3. Futaba S148 4xServos need 4.8-6v
(1) I think to use 12V battery with 70W dc/dc power converter ( http://store.ituner.com/ituner/pw70.html ) that makes 12v,5v and 3.3v for VIA EPIA. (2) OOBOT40 will probably work with 12V directly (3) servos?
Questions: -What battery would you recommend? Power, size, model? -How to feed servos from 12v? Do I need any converter? What would you recommend? -Does it make sense to have a separate 6v battery for servos? -Is any other solution (another voltage from battery, etc) to provide power to the components?
Thanks. Ek
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Ek wrote:

Got it. I like this board.
It's more like 20+ watts plus the power for the hard drive.

Well, you need something.

If servos are supposed to be used as the drive motors for this, I think you'll need something a bit stronger in the motor department.

I'd go with Logic Supply (http://wwww.logicsupply.com /) for a suppler. I've had a lot of trouble with iTuner.
The PW70 will supply power for the board and a small hard drive. I use flash cards.

I use a separate 12V -> 5V switching power supply that I got from Jameco.

I use a separate set of batteries for my servos.

I use 12V wheelchair batteries around 9-12 amp-hours.

I'd suggest a second 6V battery.

In my opinion, yes.

I always try to use separate batteries for the motors and the electronics. -- D. Jay Newman http://enerd.ws/robots /
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Jay, thanks for quick response. I am canceling order for S148. I guess you use linux on mini-atx?
What servos (or torque) would be approximately sufficient for the robot with additional 5 pounds on it?
Ek

needs
for
power
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Ek wrote:

I use fairly strong gear-motors in the 300 in-oz range. -- D. Jay Newman
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