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Tank Development |
| 10/21/07 |
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| I have finally finished the main piece of the tank, the body and treads.
The treads and wheels are from
Spark Fun. The body is made of an aluminum sheet.
It was cut into shape then folded to make the body, the corners were then brazed closed.
The motors are two bi-polar stepper motors, they were from
All Electronics, a surplus store. The motors have 200 steps per revolution.
A tutorial for stepper motors can be found
here. In the video the motors are driven with a basic stamp,
I don't really like them but it was my only option, my PIC programmer is acting up again
and my dsPIC board is to big. I am going to make a PCB for the dsPIC later on though. The power comes from six 2500mAh rechargeable AA batteries. Take a look. Here are the two stepper motors. 
Here is another view.  |
| 11/1/07 |
| The spool of wire I orded arived today. The spool is 750' of 22 AWG wire. This wire is mainly for the coil for the gun. |
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| 11/30/07 |
I ordered a Gumstix today. A Gumstix is a
small Linux computer. I ordered the Gumstix Verdex XL6P. It is a 600MHz processor with 128MB RAM and 32MB Flash. I also ordered the Robostix. I am now looking for a cheap RC tank to use as a base. I am not happy with my tank chassis. The stepper motors do not have a lot of torque and in the demo video showed the tank took over 1A. The tank will use a simplified version of SLAM (Simultaneous Localization and Mapping). A nice tutorial can be found here. Also see The Society of Robots. |
| 2/3/08 |
| I have worked a lot on the tank. The rest will be posted in the Gumstix section. |