Robots can be used in almost any situation and are primarily intended to help humans in some way, shape or form. If you are unsure of what you want your robot to do or simply want to concentrate your efforts on specific tasks, here are some ideas:
Building a robot in and of itself is fun and exciting. Robotics incorporates aspects of many disciplines including engineering (mechanical, electrical, computer), sciences (mathematics and physics) and arts (aesthetics) and users are free to use their imagination. Amusing others with your creations (especially if they are user-friendly and interactive) helps others to become interested in the field.
Knowledge & Learning
In order to build increasingly complex robots, most professionals and hobbyists use knowledge they have acquired when building previous robots. Instead of building one robot, you can learn how to use individual components with the objective of building your own "knowledge library" to use to undertake a larger, more complex design in the future.
Competitions & Contests
Competitions give the project design guidelines and a due date. They also put your robot against others in the same class and test your design and construction skills. Although many competitions are specifically for students (elementary to university), there also exist open competitions where adults and professionals alike can compete.
Autonomous life form
Humans are natural creators and innovators. The next great innovation will be to develop a fully autonomous life form that rivals or surpasses ourselves in ability and perhaps creativity. This goal is still being accomplished in small steps by individuals, research organizations and professionals.
Domestic or Professional tasks
Domestic robots help liberate people from unpleasant or dangerous tasks and give them more liberty and security.
Professional and Service Robots are used in a variety of applications at work, in public, in hazardous environments, in locations such as deep-sea, battlefields and space, just to name a few. In addition to the service areas such as cleaning, surveillance, inspection and maintenance, we utilize these robots where manual task execution is dangerous, impossible or unacceptable. Professional and Service Robots are more capable, rugged and often more expensive than
domestic robots and are ideally suited for professional and/or commercial use. RobotShop’s lineup of professional and service robots is always expanding.
http://www.youtube.com/watch?v=ExHgc9VIfE8
Most mobile robots are used to venture into areas where humans either should not or cannot go. Robots of various sizes (either remote controlled, semi-autonomous or fully autonomous) are an ideal choice for these tasks.