connecting sensors for a line follower

[ungas45]

can anyone help me or give me a schematic for a lone following sensor using a photo transistor? or just tell me how to make a cicuit out of a phototransistor for a line follower.... need help asap thnks.....

[microbric]

try this link out.

http://www.cs.cmu.edu/~mobot/kit.shtml

they have a schematic link on the page.