Let's Make Robots!


remote control

Since I started messing with robotics that I wanted to build a tank, and finally that moment arrived when two Tamiya thread kits and a Twin Motor Gearbox arrived.

Everything started with a sketch:

And as soon as I decided what I want, the assemble process has began.
I have some plastic sheets laying around and I thought they would be perfect to hold all the hardware.

The chassis:


Meanwhile the replacement motors from Pololu arrived and I soldered the caps to remove motor noise.
The ones that came with the twin gear box are very noisy (electrically speaking)

This is the design in an almost final phase:

Later I replaced the plastic things for wood, and I used polymorph for the first time, it´s the best material I have seen in the last decades.

The brains (Xbee, Arduino and my custom motor driver with L293D):

When all the things got in place it was time for a test drive through some obstacles..
I figured that it needs some kind of stabilizer.. otherwise it won´t climb more difficult obstacles, OR it may flip around… (I think i´m just having an idea for another bot)

and… this was what the solution I came up with  :D

I placed an “arm” on the back, it stops the tank from flipping over when its climbing stuff.

It works like a charm  :-)

It´s a lot of fun to drive this thing!! :-)

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Great, nice fat base there. Do you lower the arm on the back as a stabilizer to stop it flipping over when its climbing stuff?_
yes! you will see it in action as soon as I finish editing the video  :-)
If you added more plastic sheets to the underbelly that would help it from bottoming out. In effect it could act like a ramp and help propell the bot over the object. Very cool robot. Anything with tracks gets a coolness factor +1.
I don´t understand exactly what you mean by adding more plasic sheets to the underbellt..   but you will see the 'performance' of the arm, its really cool
Make it so that the bottom is flat and smooth from where it angles to the bottom that is parallel to the floor. This way if you run over something it will push the robot up instead of running into the object and getting stuck. I could show what I mean a lot easier if I was decent at sketchup.
I though in something similar, but that could lead to another problem, it would increase the length of the robot and would be difficult to maneuver in short spaces.. this is the same thing but it goes up when you don´t need it and low when you need  ...   besides, its cool to see things movin..  :-)

now I REALLY understand what you mean  :D
and I haven't thought on that.. :D

you mean the flat thing below the tank  ;)


Yes but also add some to the wood sticks so it doesn't run INTO something, but runs OVER it.

nice work

please explain me what is that polymorph ( a sort of white paste ?)

never seen it before