Quote:
Originally posted by Jnadke
He's not really referring to omniwheels, but the Killough drive platform. It's a 3-wheeled drive that can be assembled in any number of ways. It basically looks kinda like a peace sign or a Y. Usually, you'd use omniwheels and the wheels are perpendicular to the ends of the Y, so that 2 wheels would drive the robot and the third would follow (slide across the floor).
http://dec1.wi-inf.uni-essen.de/~ast...C2000/s_9.html
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thats it. But I had to make omni wheels first.
I was going to make four omni wheels and put em 90 degrees apart (much easier) but I couldn't find the pieces for the fourth (as it is I barely finished three) and the RCX and my control pad only have three outputs.
I haven't programmed it yet, because I need to find something that will let me program the RCX using trig. I know I heard of a more powerful program some techie made for programming it, but I haven't found it yet ( i haven't looked that hard either).
It is ugly, but it works. It works well, too, I was surprised. I need to find 18 little tires to make it work better though. God, I hate searching for little pieces. Pics sometime. Maybe now. I'll see. gotta motivate, and stuff.
Edit: Okay, i motivated myself. Pics are pending mod approval (i don't THINK there is anything obscene in there) and are in the 2003 robot gallery (or will be soon).
I think it was fun. I really am a big nerd. But thats why I built robots.
about the drive base . . . . if you drive the wheels at different speeds you can have it go in any direction, and with more complex math (hence my need for a trig programming language for the RCX) you can have it go in any direction and rotate at the same time while following a straight line. It really is too cool. We plan to do something like it next year but with four wheels instead of three.