599 Vex Round_up Mentor Bobcat: Autonomous Low Hang Test.AVI

[vamfun]

Full time Vex/FRC with Robodox 599 in Granada Hills Ca.

Part time with Grant High School Vex team in Van Nuys, Ca.

Sponsor of Yehabots in Madrid, Spain.

[Zepp710]

oh also for u're hanging thing did u use stand offs or what did u use to actually get it to hang?

[vamfun]

@Zepp710 Beam with a bearing block to help grab.

[vamfun]

Well, the robot uses 4 linear slides. Two are on the lower lift portion and two are on the upper. The racks of the upper and lower slides are tied together. Some small extensions are needed on the racks to get the whole 18 in extension. (9 in per slide ). There is lots of torque... 2 393 motors per stage working on a 36 tooth drive gear. This gives speed and enough torque for a fast high hang. This robot never competed... just a summer project for me. Check out my blog for new stuff.

[Zepp710]

oh btw. we've been trying to get a good system for linnear motion that can score as well. currently we have it on a four bar link and we are thinking of doing a dual stage four bar linkage with linear slides. it looks like you did a triple stage linear slide mechanism is that correct? if so does that work well? also are you in the college competitions or the regular ones? and what area are u from and are u going to the world championships? wow thats a long message.

[Zepp710]

sh** that robot is huge. how do u hang with tha much weight? also how do u program the line sensors in robot c? i've been wanting to know that. also have u done the battery mod for the controller?

[vamfun]

@Zepp710 The code is posted on the vex forum code section as "RobotC Mentor Bobcat Scripting during driver operation" , or you can find links on my blog. Google: vamfun,RobotC,programming challenge. The code has the line sensor tracker.

[Zepp710]

@vamfun thanks dude i got the programming working. my autonomous is much better now? Do u mentor a team that is competing?

[Abtein1]

couple thousand on a robot and you should get this

[mike5454ful]

Is team 599 going to the Carson vex compeition. 10/16/10. At CAMS.

[fierwall5]

the a frame is at angle could not tell if was tilted or not because it might cause some problems.

[Hootization]

nicely done, and I am not certain if you purposefully used (or lack of better camera) a camera with low focus, but I am glad you did - prevents the overborrowing of ideas, something that was quite apparent last year. With warm regards...good luck in this year's vex game!

[vamfun]

@vooboo13 Best I have right now. Maybe when I get the high hang working, I'll another do with better light.

[vamfun]

@vooboo13 Best I have right now. Maybe if I get the high hang working, I'll do another with better lighting.

[a2304]

Which sets did u combine for this robot?

[vamfun]

@a2304 Not sure what you mean by set? 

[robotloverify]

i like that wish i had the parts to do that!

[lil7upboy]

Very VERY nice! I was just wondering what your plan was for picking up tubes that are slanted at an angle (maybe your robot already can). Say if someone knocked over a set of tubes, none of the tubes' holes would be facing upwards; how would you plan to pick those up?

[vamfun]

@lil7upboy

Good question...should not be a problem for the programming challenge which this is optimized for. The plunger pickup does make it tougher in the operator challenge. The robot would need a reworked centering guide to lessen the maneuvering when plowing into several tubes that are tilted to get the plunger aligned. The idea is to pick up one, raise the lift slightly, and drop it onto another one and repeat the process until you have 3 or 4 on the plunger and then go score.

[vamfun]

@vamfun

6 hours ago

Contd: The sequence of actions involved could be automated with a mini script and commanded with a Vex joystick button. The lift would have to have a potentiometer or a few more limit switches to do this to create more positions.. The driver would only have to maneuver to get the single tube centered and then just press the automated pickup switch to do the stacking. Also an omni wheel drive scheme might help.

[elloello94]

@vamfun Sounds good ,I'm going to keep a eye on your channel and Blog :)

[elloello94]

Real nice! Do you build the bots for your team?

[vamfun]

@elloello94

No...the kids always build their own. Occasionally, I build an advanced programming robot which uses more complex control functions to expose them to more challenges. I did this to teach myself RobotC which I haven't used before and get some experience with the new Cortex and 393 motors.. We might take some of the scripting concepts and use them as a template for the programming challenge.