I wanted to build a 'quick and easy' little chassis to try out software and sensors with my $50 robot board.
I wanted to create as small a chassis as I could. So I got the inspiration by putting 2 servos side by side and thought - 'I wonder if I could Velcro all of this together?'. Being a total anarchist: I wanted to do this without any 'heavy design' - ie no Google SketchUp, Eagle etc and just using every day tools - and as few screws as possible. Not that there is anything wrong with more advanced principles- I just wanted to build something 'quick and dirty'. Velcro is very cool for this kind of proto-typing. Maybe we should call it 'plug-play-and-rip' !!
For now we will concentrate on building the chassis and then talk about software later.