pic: 2791 Starting Configuration

[TheOtherGuy]

Originally Posted by KleinKid

I'm very jealous and curious of your 7 victor controlers on your electronics board. 4 are probably for the CIM motors on your drivetrain but what are the other three used for other than controling the arm?

Looks like they've got 3 motors per side for the drive train, along with an arm and possibly the minibot deployment mechanism (haven't seen that yet, though). There's still another victor on there that isn't hooked up... maybe a quick spare?

Looks really awesome though, 2791! You guys just keep getting better

[Chris is me]

Originally Posted by Joe Ross

That's what we did in 2007. I think we missed only once in about 50 matches.

This is good to hear... though, you guys had more than Thursday at a regional to test

Originally Posted by KleinKid

Team 3735 is earliy similar to this but our system is a little more sturdy i think. We used 1" aluminum inside of 1.5" aluminum and instead of gravity for extension we rigged up a 1.5" bore pneumatic piston. Being able to retract the arm during the game makes driving around and placing tubes on the rack much easier.

We'd love to do something like that, but we wanted to keep it a little simpler and we didn't want to commit to pneumatics when we were designing it Congrats on your accomplishment! I'm sure your robot will kick our butt on the field.

I'm very jealous and curious of your 7 victor controlers on your electronics board. 4 are probably for the CIM motors on your drivetrain but what are the other three used for other than controling the arm?

As for our electronics board, we set it up before the design was finalized so it has 9 Victors. Plus one for a Spike for the compressor (we shouldn't need it at all with our single piston and 6.5 air tanks, but free ballast!). Originally we planned for 6 drive motors, 1 arm motor, and two motors for a roller claw, but we scrapped the roller claw with the success of our pneumatic. We're keeping the 8th and 9th on just as a spare.

I'm really proud of the extra mile we went to make a modular, removable electronics board this year. Every single plug is hooked up to an Anderson connector. Just one "click" and we're wired up.

[Sh1ine]

Originally Posted by KleinKid

Team 3735 is earliy similar to this but our system is a little more sturdy i think. We used 1" aluminum inside of 1.5" aluminum and instead of gravity for extension we rigged up a 1.5" bore pneumatic piston. Being able to retract the arm during the game makes driving around and placing tubes on the rack much easier.

I'm very jealous and curious of your 7 victor controlers on your electronics board. 4 are probably for the CIM motors on your drivetrain but what are the other three used for other than controling the arm?

Aluminum will definitely be more sturdy. We chose PVC so that if our arm would become tangled with another bot or element during the match the pipe would bend instead of break. And Theotherguy is right, we have a 6 motor drive train, the seventh is for the arm. We have two spares just in case we need them.

[robodude03]

Ha ha ha, you weren't lying Chris when you mentioned that our bots look similar! Great job on the robot Chris and looking forward to seeing it in action. Oh btw, we changed the way our bot looks

[Chris is me]

Video posted here:

http://www.chiefdelphi.com/forums/sh...69#post1029069

[biojae]

It looks like your radio is plugged into the camera power supply.
Make sure that gets fixed before competitions.

[Akash Rastogi]

How did I not see this thread before?

Thursday at WPI will be interesting with this bot Chris. Making any changes? btw awesome song choice.

[Chris is me]

Originally Posted by Akash Rastogi

Thursday at WPI will be interesting with this bot Chris. Making any changes?

We would not be Shaker Robotics if we didn't withhold 30.0 pounds of stuff.

Luckily, we are not rebuilding this entire robot this time. We withheld our claw and reinforced major parts of it to ensure that it stays in full working order.

We will hopefully have a minibot deployment system perfected which should allow us to deploy "instantly" onto the pole like 148 does. (If not, we have a backup plan)

We will be bringing a minibot "Plan A" and "Plan B" to the event. The first is a 3 second, 100% student designed and built machine that is not the fastest but is extremely reliable. The second is a 1.4 second wonder that might just explode.

Our electronics board is completely modular (inspired by 571) and was removed for making a dummy autonomous mode. We will have to take quite a long time to calibrate it as we have far less sensors than we need, but we will make it score in autonomous, somehow.

We also have plans to redo the belting in the drivetrain for a more stable, redundant system rather than the single belt loop we have running, but that depends on whether or not we can get a replacement hex broach in time.

[Vikesrock]

Originally Posted by biojae

It looks like your radio is plugged into the camera power supply.
Make sure that gets fixed before competitions.

Just wanted to make sure this didn't get missed. Your radio power must be rewired so that it uses the 12V-5V converter with the 5V side connecting to the DLink and the 12V side connecting to the dedicated 12V power on the end of the PD (the one currently empty in the picture).

[thefro526]

Originally Posted by Chris is me

The second is a 1.4 second wonder that might just explode.

None of mine exploded.... Yet?

[Chris is me]

Originally Posted by Vikesrock

Just wanted to make sure this didn't get missed. Your radio power must be rewired so that it uses the 12V-5V converter with the 5V side connecting to the DLink and the 12V side connecting to the dedicated 12V power on the end of the PD (the one currently empty in the picture).

We should probably write that down...

[Chris is me]

One positive this weekend: We weighed this robot, with a claw made of round 1/8" wall aluminium instead of the wood used here, along with a few other weight increasing parts.

The robot weighed only 100 pounds. 20 pounds under, and everything on this bot is 1/8" wall.

Minimalism is beautiful.

One thing that turned out to be no problem was arm retraction. We took a full speed hit to the end of the arm without a scratch. The PVC's give was perfect for this. All we had to do was drive with the arm up in the air to score, and with our freakishly low CG it was very easy to do.

We had a lot of bad luck at WPI, but at least some of the cool stuff worked the way we wanted it to.