I'm currently building a small bot, very classic: differential wheels, a ball caster, ir range finder and a servo to scan. The whole thing will be controlled by an Arduino board.
I'm still waiting for the electronic parts to arrive (I won't tell you from whom I ordered them but let's just say they are known for their delays...). In the mean time I started working on the chassis. Here is the plan (the front is on facing down, size is about 125mm by 175 mm):
It's not very clear but basically the big black boxes are the motor and the wheels. The proto board is in blue and goes on top of the battery pack.
I'm still not sure about the final layout. I would like to put the servo/ir sensor further back so the "dead range" of the sensor will not be right in front of the bot.
I will also add a few bumper sensors on the front and on the back.
What do you think?
As a material, I used polystyrene from a "food tray", the kind used to pack meat or fish. See what I mean ? I have one 4 mm thick, quite sturdy. Here is the current result:
My concern was ESD, but some people here say its probably not an issue. Hope they are right
Comments are welcome!
P.S.: I started a blog to report my progress and release documents and code. If you're interested, have a look!