contribute/help me designing a robot.

[osamapai]

i am planning to design a robot using pic controllers. A robot will have following features.
4 wheel controlled by Dc motors.
bumper switches to avoid or sense walls.
recording voices. ( planned)
record video and take snaps (planned)
detect metals.

things that are mentioned as planned are features that i will look forward to once my robot is in working condition that is wheels controlled. bumper switches installed. metal detector working.
i will programme it with C language. So if you people can contribute or post any help to me. i will be very grateful to you.

 

[kinjal.parmar]

you may try this : ww.hobbyprojects.com/pic_tutorials/cybot_page.html
www.picrobots.com