Content in “Arduino”

would it be possible to have an arduino use led's as sensors?  like this ---> http://letsmakerobots.com/node/272

 If so how would I code it ?

now that I got my pololu controller how do i use it with arduino? (as in coding)

 thanks

~Matt

Sweetness my pololu controller came,(Dang that thing is small :)

I just finnished my SAT test  (I am home schooled so that means no more school untill september!! :),

and I just  got a summer job, this week is so awesome !!!!! :P

 so here comes the hard part, coding :)

~Matt

I need some help with driving dc motors with arduino. I have already looked at the arduino site and all I found was this http://www.arduino.cc/en/Main/ArduinoShields and no guide or parts list.

I have gone thru all of the lessons here http://www.ladyada.net/learn/arduino/  and ithas been really fun so far but I WANT TO BUILD ROBOTS! NOT BLINKIE LIGHTS! :)

I just got my arduino diecimila today and I am trying to figure out what to do as my first project.

What do you guys think I should do?

I am a little tight on money untill this summer so my projects are sort of limited :(

Should I go for Arduino or Picaxe for my next robot?

Let´s compare:

Scalability:
******************
Picaxe run on many different chips, all from the company called Microchip.
They range from 8 to 40 pins, and is available in surface mount as well as ordinary housing
Many different pre-made project boards are available, and not only those made by "The Picaxe-people"; Control 3 servos and some ins- and outs on something smaller than a machbox, at a very small price, and up to large 40 pins projects.