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pacoliketaco
02-24-2007, 10:45 AM
I built this in only a few hours. it can pick up tubes just as fast and reliable as the other FRC teams' using this design can. with about 200 degrees of availible rotation, this is the best manipulator i have seen yet for the 2007 FRC game.

here is a link to a movie: http://s37.photobucket.com/albums/e82/pacoliketaco/?action=view&current=DSCN2714.flv

tell me what you all think:)

Ryan_Henneman
02-24-2007, 10:47 AM
Looks like it works well!:)

pacoliketaco
02-24-2007, 06:38 PM
well, a couple hours later, i have completed a driving base and a mechaism to be able to rotate this arm up/down. it picks up tubes better than our FRC robot:p, although it can only score on the first level of the rack.

tuelbox12
02-24-2007, 06:51 PM
that is sweet

tuelbox12
02-24-2007, 06:52 PM
do they have competions with tubes

tuelbox12
02-24-2007, 06:53 PM
wat size of chassie are you going to put that on

nonother
02-24-2007, 07:48 PM
I built this in only a few hours. it can pick up tubes just as fast and reliable as the other FRC teams' using this design can. with about 200 degrees of availible rotation, this is the best manipulator i have seen yet for the 2007 FRC game.

here is a link to a movie: http://s37.photobucket.com/albums/e82/pacoliketaco/?action=view&current=DSCN2714.flv

tell me what you all think:)

It looks like if put on a maneuverable enough arm it would work very well for picking up the ringers, but i'm not so certain how easy it would be to reliably get the ringers onto the rack. Either way, it's quite neat.

chewy
02-24-2007, 07:49 PM
hey pacoliketaco, i really like the look of that manipulator.
Just wondering, can you use vex parts on a FRC bot?

BTW: are you going to be at the NJ regional next week?

Ryan_Henneman
02-24-2007, 09:25 PM
well, a couple hours later, i have completed a driving base and a mechaism to be able to rotate this arm up/down. it works better than our FRC robot:p, although it can only score on the first level of the rack.

That's good!

Blake Ross
02-24-2007, 11:18 PM
hey pacoliketaco, im from FRC 1676 and i really like the look of that manipulator.
Just wondering, can you use vex parts on a FRC bot?

BTW: are you going to be at the NJ regional next week?Chewy - Read the FRC rules - They tell you what is and isn't a legal compoent - If you are wondering whether a Vex motor is compatible with the FRC electronics suite supplied by FIRST, the answer is Yes - Blake

Stonebot
02-24-2007, 11:26 PM
I built this in only a few hours. it can pick up tubes just as fast and reliable as the other FRC teams' using this design can. with about 200 degrees of availible rotation, this is the best manipulator i have seen yet for the 2007 FRC game.

here is a link to a movie: http://s37.photobucket.com/albums/e82/pacoliketaco/?action=view&current=DSCN2714.flv

tell me what you all think:)

impressive:D :D

MarkO
02-25-2007, 04:32 PM
Chewy - Read the FRC rules - They tell you what is and isn't a legal compoent - If you are wondering whether a Vex motor is compatible with the FRC electronics suite supplied by FIRST, the answer is Yes - Blake

Also the Victor High Amp Motor Controllers (http://www.ifirobotics.com/victor-884-speed-controller-robots.shtml) supplied with the FRC robot kits are compatible with the Vex Controller.

Another note, the PIC Microprocessors in the Vex are identical to the FRC Robot Controllers for the 2004-2005 competitions. The 2006-2007 PIC Microprocessors have more Flash program space, but are otherwise similar. Also the IFI down loader is identical for both the Vex and the FRC.

pacoliketaco
02-25-2007, 04:45 PM
thanks guys!

It can very easily score on the bottom level of the rack (24") but the next level is too far away. i put on a tank tread chassis using the medium chassis kit. i used a 35:1 gear reduction to be able to lift his heavy arm.

I am going to the NJ Regional and i will be bringing this robot. :) :) i can't wait! ill see you chewy and the rest of your team there.

more pics and a video to follow.

chewy
02-25-2007, 05:37 PM
thanks guys!

It can very easily score on the bottom level of the rack (24") but the next level is too far away. i put on a tank tread chassis using the medium chassis kit. i used a 35:1 gear reduction to be able to lift his heavy arm.

I am going to the NJ Regional and i will be bringing this robot. :) :) i can't wait! ill see you chewy and the rest of your team there.

more pics and a video to follow.

Yup, our team is bringing down our FVC bot for demos as well.

pacoliketaco
02-25-2007, 06:10 PM
nice:)

video: http://s37.photobucket.com/albums/e82/pacoliketaco/?action=view&current=DSCN2724.flv

pics:

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2728.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2721.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2730.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2725.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2720.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2719.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2717.jpg

here are different pics of my robot.

chewy
02-25-2007, 07:10 PM
nice:)

video: http://s37.photobucket.com/albums/e82/pacoliketaco/?action=view&current=DSCN2724.flv

pics:

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2728.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2721.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2730.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2725.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2720.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2719.jpg

http://i37.photobucket.com/albums/e82/pacoliketaco/DSCN2717.jpg

here are different pics of my robot.


Nice Design, is it similar to your FRC teams design?

pacoliketaco
02-25-2007, 07:19 PM
not at all really. i just saw pictures of this kind of claw and wanted to build my own. our FRC robot uses a claw where the bottom part is fixed and the top piece closes around the tube. the arm is also on a 180 degree pivot

video: http://s25.photobucket.com/albums/c82/nalbonec/AHSFIRST-Build-19Feb2007/?action=view&current=DSCN2691.flv

pics: http://s25.photobucket.com/albums/c82/nalbonec/AHSFIRST-Build-19Feb2007/

and me: http://i25.photobucket.com/albums/c82/nalbonec/AHSFIRST-Build-19Feb2007/DSCN2694.jpg

chewy
02-25-2007, 07:36 PM
Nice, that robot looks solid :D

Blake Ross
02-25-2007, 11:15 PM
thanks guys!

It can very easily score on the bottom level of the rack (24") but the next level is too far away. i put on a tank tread chassis using the medium chassis kit. i used a 35:1 gear reduction to be able to lift his heavy arm.

I am going to the NJ Regional and i will be bringing this robot. :) :) i can't wait! ill see you chewy and the rest of your team there.

more pics and a video to follow.I wish we had a couple more weeks before the NJ and VCU Regionals. I'll bet we could combine your gripping approach with a modified version of the lift/extension system you can see in this picture http://www.vexforum.com/gallery/files/7/5/7/PICT0955.JPGand be able to score middle and low ringers as fast and as well as 90% of the FRC bots out there.

The reason I am experimenting with the rack-&-pinion approach in the picture is that I am trying to overcome the horrific leverage disadvantages of an arm that pivots on an "elbow" and the annoyance of arms that move in circle instead of up and down along a straight line.

If we could figure out how to get FVC equipment to survive collisions with FRC bullies, we could start a team. At the least, the Vex bot could be used as the equivalent of a rodeo clown in the lulls between FRC matches. :-)

Blake
PS: Whoops, I think I misspelled "pinion". I was thinking of the Spanish word piņon. Doh!

pacoliketaco
02-26-2007, 02:11 PM
great ideas! after seeing that rack and pinion, i might be willing to try and add the second level of the rack scoring ability to my vex robot. :) i just have to put like a 5 pound counterweight on the bottom.

Tmaxxguy
03-02-2007, 07:34 PM
Well after going to the FRC competition taody and seeing the Rack and Roll game I got to thinking about an FVC version. Then someone got out a 1/3 scale rack and the tubes that were also scale. They built it 1/3 scale and their robot 1/3 scale so they could see the effects of things(their FVC robot and FRC robots were identical) before wasting their time trying on a larger scale. In about 45 minutes I had modified our FVC robot to pick up the rings and score with them without having to change anything more than the arm. I'll try to get some pictures up, it may not look as cool as Pacoliketacos arm but it works and only took 45 min.

gamerfrEEk
03-02-2007, 08:33 PM
Personally, I thought the replaceable arm you put on there did better than the NASA team's! We had alot better handling on those rings. Their VEX 1/3 scale ones were not doing too great. We would have done better on that if we did not have the interferance in the frequencies, it reall messed us up when wew were doing the VEX Rack n' Roll.

Tmaxxguy
03-02-2007, 08:35 PM
Has anyone other than GamErfrEEk, me and Pacoliketaco built a Vex Rack' and Roll' robot?

gamerfrEEk
03-02-2007, 08:38 PM
Has anyone other than GamErfrEEk, me and Pacoliketaco built a Vex Rack' and Roll' robot?
We should really get some people together to have a mini competition with it.

Blake Ross
03-03-2007, 01:10 AM
We should really get some people together to have a mini competition with it.I agree, using the 1/3 scale RNR will be a great Potomac Vex League off-season event for this summer (or sooner).

Blake Ross
03-03-2007, 01:13 AM
Has anyone other than GamErfrEEk, me and Pacoliketaco built a Vex Rack' and Roll' robot?Check the Chief Delphi discussion forums. Team 40 (an FVC and FRC team) held a 1/3 scale scrimmage very early in this year's build season.

Blake

Blake Ross
03-08-2007, 10:34 PM
Paco,

How was NJ; and did your Vex bot get a chance to show off???

pacoliketaco
03-10-2007, 01:40 PM
NJ was great! during our first 3 matches on friday, we kept up rank #1!!! then we lost our fourth, placing us into rank 11 after day 2. with three more qualifying rounds, we won two more and tied the last. this score of 5-1-1 put us into rank 8th, which enabled us to choose our alliance partners in the elimination rounds. we choose 522 and 637, both of whom will be attnding NYC with us. although we lost our two matches in the quarterfinals, we lost to 25, 103, and 1302 :( 25 has won at least the past 2 years and 103 has one the past three:p but we were very happy to make it into the elimination matches by ourselves this year, last year we were picked.


As for my VEX robot, i did get to show it off a very little bit in the pits, but people did see it. last night i brought it to science night at my town's elementary school. i configured it so that a toggle switch can make the robot controlled by 1 or 2 drivers. i let the younger kids drive it, while I operated the arm. i had no mechanical problems (yay).

Blake Ross
03-10-2007, 04:31 PM
This score of 5-1-1 put us into rank 8th, which enabled us to choose our alliance partners in the elimination rounds. we choose 522 and 637, both of whom will be attending NYC with us. although we lost our two matches in the quarterfinals, we lost to 25, 103, and 1302 :( 25 has won at least the past 2 years and 103 has one the past three:p but we were very happy to make it into the elimination matches by ourselves this year, last year we were picked.Congrats!

At the always tough NASA/VCU regional down here, our Team 1885 Robocat Ramp+Arm robot (I'm starting to call it the FlatCat - maybe the name will stick) wound up 16th (a little trouble with the grasping part of the arm...). But, the FlatCat's extremely dependable ramps and heads-up operation by the four folks on the field got us drafted into the eliminations.

Like you we were edged out in the quarters. In our case, our alliance didn't hang enough rings compared to the more agile bots opposing us - but it was close.

I and most of us were very pleased that our 15 month old team did that well; and we get to refine our both our machinery and tactics at LV and the Atlanta World Championships.

I'm guessing that you have a pretty good eye for machinery and tactics. During NJ, did you have any ah-ha! moments when your realized something about how the game is played or how the robots are operated? If you would like to share, I would love to hear. Another mentor and I have been analyzing what we saw at VCU and I am curious if your NJ experiences were similar.

Blake

pacoliketaco
03-11-2007, 03:12 PM
well, although there a a few really good ramp robots, i had the trouble of not seeing barely any actually work. and since a lot of teams seemed to try and make a ramp, it proved a big problem. another straytegy is to just get the robots that cannot score at all or score easily playing defense, while the stronger, more offensive robots are kept to scoring. also, i think when my team goes to NYC, we are going to have to start using spoilers a lot more.

corpralchee
03-11-2007, 04:39 PM
In addition to what paco said I noticed at the Great Lakes regional that the robots that were purely devoted to ramps didn't even have good ramps. Most of the ramps were poorly built and hard to get up on. If they were going to build a robot for just ramps you would think that they would make it robust and easy to get up on.

pacoliketaco
03-11-2007, 06:50 PM
EXACTLY my point. one of the better ramps was the Robowizards (522 - last year's champions)

Blake Ross
03-11-2007, 07:04 PM
Huh! - Paco & Corpral - Your comments are a big surprise.

Our Team-1885-Robocats robot (I like to call it the FlatCat) has ramps and an arm. The ramps worked first-time, every-time in all of our matches excpet for one time when one of the two ramps didn't deploy fully (I think a ringer might have gotten underfoot). During the elimination rounds we were as solid as a rock.

I'm surprised to hear you guys say that many ramp bots at NJ and GL were not very reliable. In the NASA/VCU eliminarion rounds we had eight very solid ramp bots; one per alliance. Across all the elimination rounds they all were nearly flawless.

Oh well, if you are in Vegas or Atlanta and get a chance to play with or against the purple FlatCat from Virginia, expect to see its alliance score 60 points if its allies can each climb their private, broad and gently sloped ramp to reach their spacious individual (12" high) deck areas. :-)

Blake
PS: Expect to see us also hang a few rings along the way.

corpralchee
03-11-2007, 07:20 PM
Yeah another thing we ran into at GL was allainces of 3 pure rampbots. Those generally lost since the rampbots couldn't get on each others ramps. Also the robots with both ramps and arms were generally pretty bad, although 1114 was great. They had focused time trying to do two things and ended up not doing well on either task.

pacoliketaco
03-12-2007, 02:24 PM
did you see 1114 with any doubles this year? last year three teams made three identical robots, starting with 1114

corpralchee
03-12-2007, 09:33 PM
I didn't see any extra robots in their pit but they could have had it in a second crate hidden off somewhere. I think the idea of having a backup robot is great and all but I also beleive that the money could be put to better use. For example GM dropped our team because of a lack of funding on their end when several of their teams were building multiple robots.

Jeremiah Johnson
03-12-2007, 11:19 PM
I didn't see any extra robots in their pit but they could have had it in a second crate hidden off somewhere. I think the idea of having a backup robot is great and all but I also beleive that the money could be put to better use. For example GM dropped our team because of a lack of funding on their end when several of their teams were building multiple robots.

They didn't have 3 robots for their one team. They had three robots, each on a different team. Three seperate teams with identical robots. 1114 didn't participate in the triplets this year. Only 1503 and the other team had identical bots, different from 1114.

pacoliketaco
03-13-2007, 03:08 PM
well, i knew that they were different teams, but still. i am annoyed by teams that cant design a robot on their own and use the knowledge of three teams to build three identical robots. i just dont think that is something FIRST would support. but i did see another team on chief delphi that built two robots. i dont see the point in that either. it just seems that if you have that much time, build a better single robot.

Blake Ross
03-13-2007, 08:31 PM
This is a perennial topic on Chief Delphi. Search the archives there and you will find strong arguments for and against collaborating with other teams to produce robots that are all clones of one design.

Blake

corpralchee
03-13-2007, 09:09 PM
My mentor has offered to purchase enough VEX parts for us to build a clone of our FVC robot anybody have any input on that? FYI we already have the money from our school, basically what we don't use gets given back to the general school fund at the end anyways?

pacoliketaco
03-14-2007, 01:48 PM
wow, lucky you. i would love to work with VEX on my FRC team. but we havent invested in a kit yet and our school doesn't give us any money. but you should seriously build a mini-FRC bot, they are really fun to build and also challenging.

proffesor92
09-16-2007, 11:18 AM
Actually...team 233, Pink Team used that same idea for their manipulator. exactly like that. Great job!