Let's Make Robots!

what do the numbers below the author mean ie, 14:31 on the robots page

 i asked in the shout box but ehh...

 

there isnt any website based forums...

Couple "First Robot" Questions

how is the sensor able to turn side to side in your beginners robot without a motor, you would reccommend picaxe over adruino, and where did you get the tracks for the wheels on your 2nd first robot, the one that resembles a tractor?

 

does it automatically start when u connect the power source, may seem dumb to you :P or is there a switch?