17-05-2010 19:15

Bjenks548

Re: pic: 548's 2010 robot

548 version 8ish robot
Four pneumatic tires for pushing power
Two Omni wheels that lift the back end of the robot up off the pneumatics for increased maneuverability
3 bar ball magnate able to hold a ball during reverse and turning
Linear kicker able to kick over one bump consistently and every once in awhile over 2 bumps
469 stopper (the ear looking things)
Able to cross bump and fit under the tunnel

Any questions, feel free to ask.

17-05-2010 20:55

548swimmer

Re: pic: 548's 2010 robot

Version ten.

17-05-2010 22:01

TEE

Re: pic: 548's 2010 robot

What do the 469 stoppers do?

17-05-2010 22:12

548swimmer

Re: pic: 548's 2010 robot

In autonomous we can drive into the tunnel one way and can't be pushed out that way. They're basically ratchets that prevent us from being pushed out in one direction, conveniently the way 469 would be coming in at full speed during autonomous.

17-05-2010 22:14

TEE

Re: pic: 548's 2010 robot

nice

17-05-2010 22:46

apalrd

Re: pic: 548's 2010 robot

1. Top speed in each gear?
2. More specs on roller. Material, surface speed, power, floating?, How fast did you back up with it? Any software managing roller?
3. More specs on kicker. Energy storage, recoil method, variable?, etc.

Nice underglow. We considered red/blue underglow corresponding to alliance color, but decided to use the lights for feedback indicators instead.

I like the 469 stoppers. However, we found at Troy in the finals that it is more effective to let them enter the tunnel and steal their balls then it is to block them from entering the tunnel. Those things probably weigh like nothing so they couldn't hurt to add.

17-05-2010 23:08

548swimmer

Re: pic: 548's 2010 robot

1. Only one "gear," but about average speed. I'm not sure about the FPS.
2. The double sided non-residue leaving sticky tape from GM. Window motor with slight reduction via belt drive.
3. Linear. Springs. Not variable. We used two one way bicycle bearings to prevent premature kicking, and some nifty programming stuff to stop the pull back just before it would release. We had a pretty neat display of it at the comp's we went to.

18-05-2010 15:12

Bjenks548

Re: pic: 548's 2010 robot

1. As 548 swimmer said theres only 1 gear, but i think it was geared more for torque then anything else.
2. The original top bar is covered in sicky tape is connected to a motor (not sure which) using surgical tubbing, this way the bar stops rotating when a ball is caught under it while still keeping pressure. The middle bar is also covered in sticky tape and was at first used as a pincher bar, but didn't work very well, so now it is just more sticky tape in contact with the bar. The bottom bar is more like a ramp, also covered in sticky tape. The bottom bar is spring loaded so it can bend back while we traverse the bump. The only software i think is managing the roller is making sure the one motor continues to run
3. Not a big expert on the kicker, however there is a pull back mechinism I think is powered by a window motor, a cable runs under the robot to a pulnger that has 75lbs of force when all the springs are fully compressed. It is angleds slightly upwards to get a little lift on the ball while never kicking over the goal.
Also with regards to the comment that not blocking 469 is the best strategy... we took it a step further. When we back into the tunnel, our ball magnet and kicker face our zone and balls comming off the ball return will get possesed by us and kicked under the tunnel into our own goal.

18-05-2010 16:29

548swimmer

Re: pic: 548's 2010 robot

It's more than 75 lbs. I think it may be around 150 or 200.

19-05-2010 21:40

Bjenks548

Re: pic: 548's 2010 robot

edit: not our own goal, our own zone...