Build Blitz Robot Reveal - Team Copioli
 

After an intense 72 hours of designing, testing, and building, Team Copioli is thrilled to present their Build Blitz robot. Features include:

• 4-bar linkage combining the intake and launcher
• Gratuitous use of the VersaBlock for maximum adjustability
• VEXpro Single Speed Double Reduction gearboxes powering the kicker, allowing for custom shot strengths
• Built 100% from COTS parts, including design software available free to FRC teams (Inventor and SolidWorks)

Check out the official reveal video here: http://www.youtube.com/watch?v=8tJMiGBpWHQ

For more information on how this robot came to be, be sure to check out BuildBlitz.com, where you can find team bios and a full CAD assembly. The mission of Build Blitz is, and has always been, to educate teams on the process these designers went through when designing their robot. As such, check out the liveblogs on the homepage of BuildBlitz.com, and feel free to use this thread to discuss or ask questions about Team Copioli's final product.

Re: Build Blitz Robot Reveal - Team Copioli
 

One thing I noticed during the reveal was that the tusk/intake linkage seems to back-drive due to inertia when the robot accelerates quickly. This caused the drivers a bit of trouble when trying to launch the ball with a running start. What would the team plan on doing to fix this problem?

Re: Build Blitz Robot Reveal - Team Copioli
 

What does COTS parts mean?

Re: Build Blitz Robot Reveal - Team Copioli
 

Common off the shelf.

Re: Build Blitz Robot Reveal - Team Copioli
 

According to the 2014 FRC Manual, “Commercial, Off-The-Shelf”

Re: Build Blitz Robot Reveal - Team Copioli
 

Has it always been this? I've always thought it was common instead of commercial.

Re: Build Blitz Robot Reveal - Team Copioli
 

Its actually Commercial Off the Shelf.

Essentially, could any FRC team go buy it from a supplier?

Re: Build Blitz Robot Reveal - Team Copioli
 

http://en.wikipedia.org/wiki/Commercial_off-the-shelf

Re: Build Blitz Robot Reveal - Team Copioli
 

I call it "Zero PID". We could not get it tuned in time for the reveal, but one day of tuning and it would have held position.

Zero PID is simply this: Operator uses the controller to move the arm. When the arm is in the position the operator desires, then the operator releases the controller joystick. Once released, the microcontroller commands the arm to stay in that position using a potentiometer or encoder feedback. I have used this method successfully for every arm game since 2005. This would keep the four bar in position.

Paul

Re: Build Blitz Robot Reveal - Team Copioli
 

Great stuff Paul! I would be terrified to face off against this robot.

If this is the quality of the 3 day bots this year, what are the 6 week bots going to look like? What will champs look like? I'm excited!

Re: Build Blitz Robot Reveal - Team Copioli
 

I thought in the Build Blitz webcast he said that the polycarb cut pieces were "custom"?

Re: Build Blitz Robot Reveal - Team Copioli
 

I'm sad that you took the Elevation game piece (the blue foam cube) off of the guide arm. I have about 500 of them, and was looking forward to having a way to get rid of them!

Nice design, and I've also built robots with "zero pid" most notably the 2008 "fork lift" robot.

Re: Build Blitz Robot Reveal - Team Copioli
 

They are a drill press and band saw part made from 1/4in Lexan.

Re: Build Blitz Robot Reveal - Team Copioli
 

Not sure if I'm missing something but I was going through Team Copioli's CAD files, and it appears as if they are using a 15mm timing pulley (P/N 217-3230) to drive two belts out of the gearbox. The belts are not in the design, so I am trying to figure out how two would fit with what I'm assuming is a 9mm timing belt from vex pro. Are they using a different pulley/belt or would this be able to fit somehow?

I hope that more information on assembly will be released soon for teams looking into using Vex Pro's versa chassis system.

Re: Build Blitz Robot Reveal - Team Copioli
 

I am wondering this same thing. I looked at the CAD files and got very confused on what was going on with the belts.

Re: Build Blitz Robot Reveal - Team Copioli
 

I saw posted somewhere here on CD(maybe in the 2014 VEXPro product release thread) that the pulley is toleranced such that 2 9mm belts will fit on the 15mm pulley.

Unless I imagined seeing it.

Re: Build Blitz Robot Reveal - Team Copioli
 

The 15mm pulley is a bit wider than that, and the 9mm belts are a bit narrower than that, allowing for two "9mm" belts to fit on a "15mm" Vex pulley.

Re: Build Blitz Robot Reveal - Team Copioli
 

Ok, I found where this was discussed in the Versa Chassis thread. RC responded to a similar question - http://www.chiefdelphi.com/forums/sh...1&postcount=11

-The pulleys can be expanded with spacers.

Re: Build Blitz Robot Reveal - Team Copioli
 

The 42T and 60T pulleys can we widened with spacers. The 18T, 24T, 30T, 36T pulley come in two widths, the wider one can accommodate two 9mm wide belts. (we toleranced things to make this work).