I am planning on building a robot with wheels (later legs, if possible), that can move around the room and analyze certain things, using a couple sensors. In the later steps more functions such a grabbing are the things I want to add.
Could you recommend me a micro controller?
My concern about Arduino is that there aren't enough slots, Raspberry Pi seems like it constantly needs a screen for the user.
I am a complete amateur when it comes to robotics. However, I am quite familiar with the computer languages Java and Python. Since I wrote a fun app for Android for myself I would love the robot to be compatible with Android, too.