Domestic Robots Help

I have to present on domestic robots for my schoolwork.

THings I have to talk about are :
Input devices (Sensors, buttons)
The relationship between sensors, processor and actuators / motors
The feedback in the system

If anyone has some knowledge about the control systems in Robots, a reply would really help

Thanks,
Jeff66512

The following series of articles should give you a good start:
robotshop.com/blog/en/robots … ke-a-robot