FANGV Ri3D 2025! (FIRST Alumni Network of Grand Valley)

Welcome to the FANGV 2025 Ri3D Thread!

The FIRST Alumni Network of Grand Valley is thrilled to officially participate in Ri3D for the 2025 Reefscape season!

This year, we’re aiming higher with:

  • Thorough game analysis
  • Diverse prototyping
  • Enhanced sharing of our findings

Stay tuned and follow our journey:

  • Live Streams on YouTube
  • Progress reports and writeups on this Chief Delphi thread
  • Prototyping and testing highlights on Instagram and YouTube

We’ll be posting livestream links soon—don’t miss out!

We’re excited to tackle the challenges of this season and share our progress with the community. Join us as we DIVE into Reefscape! :ocean:


Written by:
@Freezer9401 - Media & Outreach Coordinator/Design Lead

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Livestream Links

FANGV is geared up and ready for kickoff! Follow along with our progress on our daily livestreams, links below:

Saturday 1/4 Livestream

Stream Schedule (times US Eastern)
~1:30pm Stream Start
10:00pm Tentative End Time
Stream Link!

Sunday 1/5 Livestream

Stream Schedule (times US Eastern)
8:00am Stream Start
10:00pm Tentative End Time
Stream Link!

Monday 1/6 Livestream

Stream Schedule (times US Eastern)
~3:30pm Stream Start (delayed start due to beginning of semester)
10:00pm Tentative End Time
Stream Link!

If you miss out on our livestreams, don’t worry! We will also be posting progress update and highlight videos on our YouTube, Instagram , and written updates on this Cheif Delphi thread

We all can’t wait for tomorrow’s game reveal! :ocean: :tropical_fish: :coral:


Written by:
@Freezer9401 - Media & Outreach Coordinator/Design Lead

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Protected Zones Video

FANGV has begun our Ri3D build. We began by diligently reading the game manual and doing some game analysis. Our first video goes over what zones on the REEFSCAPE field are protected allowing for restricted access. We will be posting more videos soon, please like and subscribe!

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REEFSCAPE Max Score Video

FANGV has done the math. The max score for one alliance in the 2025 FRC REEFSCPE game is 303 POINTS! See how we found this in the video below.

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REEFSCAPE Bonus Ranking Points

Were you wondering how to score extra ranking points in the 2025 FRC Game? Madelyn shares all of the bonus ranking points available in this years game.

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Coral Slide Testing

Hello, with day 1 of our Ri3D over we are sharing some more of our findings from today. Today we completed some testing with the game pieces including the Coral. The PVC surprisingly didn’t slide very well on uncovered polycarb, and we would recommend finding some material to cover any long slides with a material with lower coefficient of friction. See some of our testing in the video below! Look out for our day 1 recap coming soon!

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Day One Recap

First day check :white_check_mark: ! We can’t wait to do more work on our robot concept tomorrow, in the meantime enjoy a recap of the work we completed today.

Game Analysis

We started our process by reading through the game manual and doing a field and scoring analysis. Find shorts about these topics on our Youtube. We determined the max score to be 303 points! We continued reading and clarifying important rules and set goals for what we wanted to accomplish with our robot.

Robot Functions

After analyzing the game we determined which functions we believed to be the most important and achievable for us in our short timeframe. Our functions list was narrowed down to 4 main functions:

  • Recieve coral from coral stations
  • Score coral on L1, L2, and L3
  • Remove algae from reef
  • Score algae into processor

These functions were determined to be the minimum requirement to potentially earn the 3 bonus ranking points, and thus will be our goals for our robot!

Ideation

We then moved into our ideation phase, where we split into teams to come up with ways to accomplish the functions identified above. Once each group came to a consensus, ideas where presented and the best ideas were combined to come up with our desired robot concept. Our whiteboards can be seen below:

In this image you can see concepts for our coral station pickup. Taking inspiration from the Kitbot, our idea also consists of a ramp for the coral to slide down, but for easier delivery to the reef the coral must be oriented longways with a PVC opening facing the bottom of the ramp. Instead of somehow funneling/reorienting the coral, we came up with the idea to feed the coral into the robot horizontally and catch it with a ramp sloping perpendicular to the coral station. This way there is no reorienting needed, and thanks to our swerve drive, scoring out of the "side" of the robot is no issue. This ramp setup also takes up way less real-estate in the robot, allowing more space for a potential algae mechanism.

Group 2 also came up with a similar idea to modify the Kitbot. They proposed that a funnel be used to reorient the coral down the slope, and use a large pivoting arm with the final wheels and captured coral to gain enough height to spit out on the L3 branches. Our concern with this concept is that an arm of the required length would be quite heavy and difficult to rotate.

The final ideation group came up with a unique concept to also use a slanted ramp for the coral, but have the capability to extend the ramp with a motor and also to pivot the slope using a pneumatic cylinder.

Prototyping

After some ideas for mechanisms were presented a list of potential prototypes was discussed. Specific interactions/measurements we were interested in testing included the following:

  • Possible deposit angle of coral onto reef
  • Reorientin coral on a downward slope
  • Coral friction on polycarb
  • Removing of algae from reef
  • Trough drop height
We began testing some of these by the end of the night but will continue testing some more tomorrow.

Concept Selection

With some previous conceptualization of how to do an elevator with our current resources, we determined that a single stage elevator is more than possible. Combined with our perpendicular ramp concept we believe we will be able to receive the coral easily, as well score them in L1, L2, and L3.

This image shows our concept. The left half of the robot is the elevator mentioned above with the perpendicular ramp attached to the large carriage. There are 2 wheels at the end that allow us to control when the coral is released. The right side of the robot is currently being left open to potentially add an algae scoring mechanism after the coral mechanism is functional.
If you have any questions regarding our design feel free to ask us in this thread or in our live chat in tomorrows livestream!

Written by:
@Freezer9401 - Media & Outreach Coordinator/Design Lead

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Elevator CAD

After deciding on a concept at the end of day 1, our design team went to work on designing a single stage elevator that would be able to be manufactured with our machining capabilities and available materials, and accomplish our goals of scoring coral on L1, L2. and L3. Through some 2d sketching it was confirmed that a single stage is all that was needed to score on all the wanted levels, as seen below.

We then moved into 3d, using a combinations of 1-1/8" bearings and .5" thick blocks of HDPE to constrain the inner stage and allow for the upward motion.

We were proud to have it mostly finished before the start of day 2, and assembly on the elevator began that morning. After some unique challenges that were solved, the elevator is assembled. We will be providing some more details on it later this evening!

Written by:
@Freezer9401 - Media & Outreach Coordinator/Design Lead

3 Likes