1699 Robocats | 2025 Build Thread

Welcome to our second build blog!

Who are we?

  • Team 1699, the Robocats
  • Founded in 2005, this is our twentieth year!
  • 2024 CT State Champions
  • Roughly 24 students and 10 mentors

Links

Website
CAD (coming soon)
GitHub

What’s the plan for our blog?

  • Weekly updates from each active subteam
  • VERY short content, focus on major breakthroughs/progress
  • Asking for community input

Hopefully we are able to meet these goals!

Kevin
1699 Captain

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Preseason

We had a very productive preseason!

Accomplishments

What we learned

  • Don’t reinvent the wheel! Shout-out to many teams including 6328 and 3005, we may have borrowed your presentations. :slight_smile:
  • Learning CNC takes time! This was our fourth year in a row acquiring a new CNC machine and once again we underestimated how long it would take for us to get comfortable with it.

Questions for the Community

  • Thoughts on carbon fiber 3D printing? We just purchased a Bambu P1S and intend to upgrade it to work with carbon fiber filament, but aren’t sure how much we’ll actually use it vs PLA or other filaments, and what parts we should use it for.

  • What do you prioritize with a new swerve base? Paths? Tuning controls? Vision?

  • Thoughts on having CAN test points? I was inspired by 5940’s release and am curious if anyone has thoughts on the benefits and potential issues with exposing CAN test points.

Thanks for reading :slight_smile:
Kevin
1699 Captain

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I’d say tuning the modules and controls. Without well tuned controls, you may see path errors and can’t correct everything with vision. Too often we see kids adding “fudge factors” in places because they never spent the time to fine tune PID controllers for their modules.

From there you can retune at full weight once the rest of the robot is on the base.

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I have never done anything like that… certainly not… no arbitrary variables…
I am curious to see how the sysid works for the modules (I think that’s the tool that helps tune them?). We are intending to use the CTRE swerve generator and I believe it’s built in but I’ve never worked with sysid before.

Kickoff Summary

Saturday


After watching the reveal and eating lunch, we broke into small groups and then merged to form our primary strategy:

  • 4 pieces of coral including preload during auto, from “lollipops” or human station
  • Deep climb in endgame
  • Complete two algae cycles for co-op and then cycle 5 coral L4, 5 L3, and so on until the game is over
  • If we somehow can independently complete all 15 or 20 required cycles for the reef RP, or more likely when our teammates complete it with us, we will focus on filling the reef, L4 down



Then, a group of students especially interested in design worked on coming up with alternative strategies while others:

  • Programmed swerve with the 2024 CTRE generator
  • Worked on getting photos on our bulletin board
  • Mounted rails to a new cart for the new robot
  • Played around with the gamepieces

Sunday

On Sunday we developed design requirements for our robot based on our strategy. We sorted these into must have, should have, and would like to have.

Must:

  • Score in all levels
  • Somehow manipulate algae to get it into the processor
  • Drive
  • Intake from the coral station
  • Climb deep
  • Park

Should:

  • Intake from the ground

Would be nice:

  • Score in net
  • Shallow climb

Then, we developed good design principles including:

  • Low center of gravity
  • Fast, light if possible
  • Compact
  • Efficient movement
  • Simple if possible

Then, we split up into groups and came up with 4 different designs.


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Designs

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(VERY low detail CAD, not all dimensions are accurate as you might guess)
Link to Slides with CAD Links

  • Most of these designs take inspiration from Michigan Tech’s intake, which we will prototype ourselves before committing to

Donut Climb

An exciting design was the donut climb, featured in Group 1’s design. The premise is putting the cage in the center of the robot and then climbing up. Right now we are exploring the idea of doing this without needing a hole in our robot, but I hope we still call it the donut climb anyways. :slight_smile:

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Questions for the CD Community

  • Are we ignoring the potential of algae? Do other teams find it more valuable to be able to score directly into the net?
  • How many coral cycles do you think the average team will be able to complete? We guessed 10-12 in teleop.
  • How much more time is scoring L4 going to take compared to L3 v L2 v L1?
  • What temp field elements are you building? We are going to decide this Thursday and I’ll provide our answer.
  • How often will co-op be activated? We are guessing more often than not. Will it become advantageous to not hit it at high levels of play?

Happy processing!
Kevin
1699 Captain

4 Likes

“no buenos” :laughing:

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These are the agendas for our Tuesday and Thursday meetings this week. Feel free to ask any questions!

Tuesday Meeting Google Doc

Thursday Meeting Google Doc

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Big thank you to Team 3182 for taking our materials and welding a cage for us!!!

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Temp Field

This year we had a very efficient temp field manufacturing process. This can probably be credited to a few factors:

  • We didn’t spend much time debating what we needed to build as we knew what tasks our robot should do by the end of weekend 0
  • We had all of our materials purchased before weekend 1 so that we could start building immediately
  • We got all of our students safety and tool certified before the season so that our manufacturing team could be at full capacity

This year we are building:

  • One robot’s worth of barge, no net, just for climbing and interacting with cage
  • One processor, reusing some of the structure from our amp
  • One half of a coral station (DONE!)
  • One reef (HALF DONE!)

As Chase mentioned, huge thank you to Team 3182 for the cage!

3DP Reef

This year we purchased a new 3D printer, and decided to CAD up some reef joints, rather than using PVC fittings or metal plates.


As you can see, the reef was a little bendy. To resolve this, we reprinted tighter fit pieces and taped the pieces in place as well. It will be very interesting to see how robust this is.

More updates coming out soon hopefully, but for now enjoy these photos!






and some insightful strategy

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