im just confused, how can you mount a hub on that inner circle when there's no screw holes???

Hello friends!  I'm making a small 3 wheel drive bot with omni wheels but i just have no clue what hub size for these wheels.  Can anyone help me out? http://www.robotshop.com/productinfo.aspx?pc=RB-Nex-08&lang=en-US
 

Thanks for your time

Yeah, I'm talking about the already assembled boards that have the heat sink and all

I'll have a separate board for power distribution but other than that I would only need four pwm pins on the UNO right?  One for each motor.  What else would I need to plug in other than ground?

Hello friends!  Im building a little rover and i need at least 3 motor driver on an arduino uno.  Could i simply fit two L298 dual H-Bridges on there?? thanks for your time.

Thanks for all your help!  im starting to really iron out some details, heres a picture of what i drew up on sketchup.  http://s1302.beta.photobucket.com/user/amp6251/media/ScreenShot2012-11-27at60618PM.png.html?sort=3&o=0

But the link on ebay isnt a L9958 (the data sheet you sent me), and how do you daisy chain?  Does all the stuff from the data sheet apply to that bridge?  Thanks for all your time.  Also can you run brushless motors on it?

yeah i did mean pins, that clear up a lot thanks. also do you know how many amps those bridges can support per motor?  it wasnt on the description

Is there enough room on the uno to fit three?

can you controll speed and direction? with the transistor circuit?

Hello friends!  Im having a lot of trouble figuring this out.  Im building a small rover,   3 WD  with amni wheels, gunna be awesome,  but i cant seems to find a motor shield that will supply 3 DC motors.  I need at around 2 amps out of the motor and around 12 volts, i dont want it going insanely slow.  The adfruit shield is only good for very small motors and the L298 only supports 2 motors.  Can i make my own bridge.  Advice?   thanks for your time!

Hello friends!  I'm hammering out the details of a little rover im building that will run off an arduino uno, with an duo H-Bridge motor shield.  The shield maxes out at about 45 volts and 2 amps (per motor).  The bout is going to be relatively small, with tread not wheels for extra adaptability.  I will set it up with tank style drive.  I want decent torque to navigate the home, speed isnt really a priority.  Whats a good balanced motor for me???  Thanks for your time and responses!

Wow!  https://www.sparkfun.com/products/11002 ... This is perfect, no problems at all now!

Allright great!  and thanks for everyones responses!  I'm constantly running into one problem though.  Every H-bridge motor shield uses PWM pins 2 and 4.  And the Arduino ethernet shield uses 2 for the 4.0 model, and 4 for the 5.0 model.  What a pain!  Why can you just switch around the digital pins (1-7).

I was thinking this, but they are pritty much the same https://www.sparkfun.com/products/9670 .   And whats the problem with connecting a wireless router to my home network then just going from ethernet shield to router which wirelessly goes to my home router.  Has anyone had experience with that.  That would be the cheapest route.  Then i would just get a driver station app or something.  But ive been looking for a while and i can find what pins it takes.