Actually this project for exhibit is for our Senior Year Design Project in Computer Engineering. The preliminary project defense is the next week of the exhibit week. I am the Leader of the 3 man group and I chose this project proposal because I love robotics and same as with my members. I really find remote controlling robots cool so I really suggested this to my groupmates.
Ronv, Bryan and Andy thank you for your replies. We would like to save money and we decided to use rechargeable batteries. The problem is that we don't know yet what type of batteries we will use and what's the size. We're asked by the panel of judges to design carefully our voltage source. Ronv, I'll try to familiarize my first for LiPo batteries. Bryan, I don't think we can use stepper motors because the judges agreed already to use DC motors. I don't know if I'll be changing our L293D to L298 since it can't handle a lot current.