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  #16   Spotlight this post!  
Unread 06-03-2002, 13:56
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Let me expandon or correct my good SW friend, Mike Soukup:
1) It depends. 2001 rampbot was way more complex mechanically - it required more engineering analysis for strength vs. weight versus power than we have ever done. Electrically, this year's is more complex since we can now monitor current to all our high load motors.
4) We also are not using the small Johnson,and no pneumatics
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Unread 06-03-2002, 16:13
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Crab steering and Control

Hey Mike and Raul,

Your scheme for crab vs monster steering is very similar to ours. BTW, monster steering is 4 wheel steering, like a monster truck. We decided (or shall I say the students decided) that it would be cool to do all of this with 1 joystick. We do basically the exact same thing as you, but we have the students push the top joystick button to switch between monster and crab.

P.S. - I like the way you guys get the balls from the floor.

Hope to see you at Chicago again this year.

-Paul
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Unread 06-03-2002, 22:21
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drive train

I really like your robot. You did a great job in designing it. I'm wondering if I you could tell me what you use to make the wheels turn like they do and how you did it. Also is the software to make the robot drive in the 360 degrees of motion complicated?
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Unread 07-03-2002, 08:01
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Paul,
We will see you at Great lakes and Midwest regionals. We use the botton on the joystick to control two ranges of speed.

SSwaszek,
I was just going to ask you to stop by and see us and I would explain. Unfortunately, your team will not be at any of the events we will attend unless we see you at Epcot.
We use the globe motors to control the angle of the wheels with a chain drive in pairs. Mike explained the feedback controls in a previous post above. The SW is not that complicated unless you attempt to incorporate non-linear response to the joysticks. In 4-wheel steering mode (vs. crab mode) the response is touchy at high speeds unless you use a non-linear response to reduce the sensitivity at low angles.
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Unread 07-03-2002, 13:23
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Another Cool Wildstang Robot. Can't wait to see it in a few weeks in IL.
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Unread 07-03-2002, 14:25
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sswaszek

I posted our code for four wheel steering the the Programming forum it should help you get a basic idea of how to calculate the angle and how to apply speed to the steering motor. The worst part of it is calculating the inverse SIN or COS
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Unread 07-03-2002, 18:49
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Cool How fast is Team 111?

Hey! Awesome modular design. I was just wondering how fast your robot goes (feet per second)? Do you have only two speeds or more ...? Hope we get paired up with you guys again this year! Thanks for all the awesome memories at Ypsilanti last year.
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Unread 07-03-2002, 20:50
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Only 7 feet / sec.

I guess we are conservative when it comes to running our motors on the low torque side of the power curve. We prefer to be safe and not blow a fuse or burn out the motors.

I am amazed some teams can get away with going more than 10 feet/sec. I guess thats what CVT's or other shifting does for you. Crab or swerve do not mix well with shifting.

Engineering - it's all about compriomises.
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Unread 09-03-2002, 22:45
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Raul-

Looks nice, you guys have some stuff similar to ours and it should be an interesting competition in a few weeks in IL. Hopefully we both can perform as well as last year.
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Unread 14-03-2002, 08:05
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Whoever made that video

Whoever did that video with tthe half life music:

THat is one kick a$$ video and i congratulate whoever worked on it.

P.S. Your bot looks awesome and i hope to see you at nationals(hopefully as your partner)
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Unread 14-03-2002, 11:14
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You guys make excellent videos. I enjoyed it entirely (not to mention d/ling it in 3 seconds. I still don't know how I did that). We still watch it in the animation studio, 'cause it never gets old.
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  #27   Spotlight this post!  
Unread 09-04-2002, 23:46
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I really like the Wildstang's vids...It was a lot of fun watching the bot in action at EMU.

As for speed, our bot we had geared for 10fps...and we had enough pushing/pulling power for sure...But If we had to do it agiain we might slow it down to 8.5 or so, and get that little bit more power.

Getting to the goals quickly seemed to be as important as being able to get in a tug-of-war...10 seemed to fit that balance for us well enough...Afterall 4th aint bad...lol
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Unread 10-04-2002, 21:48
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Wildstang

How many balls can you get in one "basket"(or whatever the thing is called) full?

also, how many can you gey in like the first 30 sec? minute?
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Unread 10-04-2002, 21:52
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My teams bot doesn't have ball pick-up...

We're just goal grabbers.
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Unread 11-04-2002, 00:28
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Realistically we can fit 10-12 balls in our chute. I'm not sure how many we can grab in 30-60 secs, but if I recall correctly, we usually scored 8-15 balls from the floor during our qual matches.

Mike
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