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Unread 15-01-2009, 23:30
Travis Hoffman's Avatar Unsung FIRST Hero
Travis Hoffman Travis Hoffman is offline
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FRC #0048 (Delphi E.L.I.T.E.)
Team Role: Engineer
 
Join Date: Sep 2001
Rookie Year: 2001
Location: Warren, Ohio USA
Posts: 4,047
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Vid - Team 48 Practice Robot and Trailer

http://www.youtube.com/watch?v=537Qi2C57x4

Stock wide frame. Stock wheels. Stock Toughbox transmissions. Trailer with stock wheels. "Real" regolith. 1 CIM per side. 4WD. No additional joystick programming or other "intelligence". Tank-style 2-joystick steering. This is an absolute bare bones bot in action.

Bot weight was base + battery + 85 lbs. of free weights. Definitely a little light. We're putting a 2nd level on the bot tomorrow so we can set an accurate bot weight and more easily test different weight distributions.

We did locate some old '06 bumpers after this vid, which we will install on the back of the practice chassis to provide more realistic and constrained trailer pivoting.

All in all it was fun to drive. I enjoyed throwing the trailer around - start a turn, let go of the sticks, let the trailer spin the bot around and complete the turn, then accelerate. Perhaps not the most efficient turning method but it was fun.

Just from a few minutes of driving, I can see how much we'll have to adjust the joystick and drivetrain code on the actual bot to limit wheel slip.
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Travis Hoffman, Enginerd, FRC Team 48 Delphi E.L.I.T.E.
Encouraging Learning in Technology and Engineering - www.delphielite.com
NEOFRA - Northeast Ohio FIRST Robotics Alliance - www.neofra.com
NEOFRA / Delphi E.L.I.T.E. FLL Regional Partner
 


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