We’re looking forward to the chance to continue making great resources for the FRC community!
Live stream: https://www.twitch.tv/umnrobotics
Videos: Youtube
Updates: Twitter , Instagram
Github: https://github.com/GOFIRST-Robotics/Ri3D-2025
White papers: In this thread
CAD: In this thread
Thanks to our generous sponsors for helping us make this happen!
Resources for teams on Chief Delphi (not managed by us): REEFSCAPE Resources
Check out our current idea brainstorm and day 1 mid-day update for REEFSCAPE:
Day 2 recap of the 2025 RI3D season is out! We had a blast building our subsystems and seeing our chassis move. Check it out here:
The day 3 recap of the 2025 RI3D season is out! We made major strides in our systems and programming. We got our parts cut out on the water jet, and they are now being assembled! Check it out here:
Link to our full robot CAD here: Onshape
I am on the team and one thing I’d like to mention that wasn’t covered in any of our update videos or walkthrough was our idea for this robot to complete the deep climb - we came up with a similar idea to the one Penn State Ri3D ended up implementing, where we would lower our intake all the way to the lowest point in order to knock the deep cage into the bay of our robot through and into the gap in our algee ramp, and then push down on it to pull it down through the center of the robot. The main reason we didn’t end up pursuing this idea and implementing it was due to the amount of time we estimated it would take as we had already installed all of our electronics in the area we would have done this, and programminig needed that to stay implemented for mecanum drive testing.
Do you think that skipping a game specific mechanism for mecanum drive was a worthwhile trade off for you as a robot in three days team?
Introducing the UMN Robotics 2025 Ri3D Robot, Poseidon! Thank you to our sponsors, Medtronic, Earle M. Jorgensen Company, NASA MN Space Grant, the University of Minnesota Student Services, and the University of Minnesota College of Science and Engineering Anderson Labs! We appreciate all the support!
Check out the robot reveal here:
Check back later for our walkthrough!
Good question, in this case we had actually just considered deep cage to be out of scope for our robot within our first 2 hours of deciding the initial robot vision, and thus didn’t see this as a tradeoff with mecanum drive and proceeded with that drivetrain change. I’d like to clarify that we absolutely could have done both macnum drive and this deep climb idea at the same time mechanically, but it was much more the timing - we only had this idea at the beginning of day 3 iirc and didn’t think that was enough time remaining to change the electronics and develop the mechanical side as well.
We beleive mecanum drive was very useful to the design of our robot in this case when swerve wasn’t available to us, the extra menuverability was super helpful for the reef. I think in most cases you don’t have to trade off this drivetrain change for deep cage, but mecanum drive definitely didn’t help us score 12 more points during teleop so maybe consider that the biggest factor here
Do you guys have a basic BOM or list of materials that was used?
Here’s the official 2025 UMN Robotics Robot in 3 Days Walkthrough Video showcasing our robot, Poseidon! Thank you to our sponsors, Medtronic, Earle M. Jorgensen Company, NASA MN Space Grant, the University of Minnesota Student Services, and the University of Minnesota College of Science and Engineering Anderson Labs! We appreciate all the support!
Check out the robot walkthrough here:
How well did the Robomaster mecanum wheels end up holding under the forces of an FRC bot?
We are currently working on a BOM and hope to post it here by the end of the week!
The RoboMaster Mecanum wheels held up very well. As far as I know, we only drove on carpet, and the robot was only driven for around 1-2 hours.
Here is a link to our BOM: UMN Robotics Ri3D 2025 BOM
BoM has been released