Unqualified Quokkas Ri3D: The First Ri3D Team in Australia

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Yep, we will be uploading the CAD file for the intake/shooter plates alongside the update for day 3 which is being written right now. So hopefully in the next few hours we will be uploading a STEP file of the intake/shooter assembly alongside some extra information.

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Congrats,
That’s a great build. We are still thinking about strategy and you guys have a fully built field with a working robot that completes just about everything.

Looking forward to seeing what is going to come out at Southern Cross.

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Thanks for the video!

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Right that I was tired lol

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Love the non buddy climb robot. Soo many teams would do really well copying this and practicing for the next 7 weeks.

How far away can you actually score notes into the speaker?

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Thanks!

I believe the third ring shot in auton is the furthest consistant shot we can hit. @FunkyRobotClub can tell you more in detail. Although he is probably asleep right now as its 1:20am here…

Nope!

tldr: we don’t know.

Our team unanimously decided to shoot from directly under the high goal very early on. We were not interested in finding out how far we could shoot (given the time constraints) but we knew that it was going to be easier to put power into the ring with top and bottom rollers than side rollers.

That said, I would not be surprised if, with some tuning, this shooter could score 50% from half-court.

During the build we considered that top level teams could possibly shoot from across the field by using top and bottom rollers, as well as imparting spin on the ring.

edit: it may be worth noting that from the final auto shot, variations of up to 3.6 degrees arm angle were very influential. This would only get more difficult the farther out you are.

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I’ve merged the three Unqualified Quokkas threads in hopes that it’ll be easier for folks to find all the amazing resources and designs that they’ve posted, along with the corresponding discussions!

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How reliable did you guys find the final auto shot to be ? I’m curious about the whole routine in general and if there was anything that could impact its reliability

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Hey Quokkas, looking into all the RI3D concepts today. Is your robot capable of getting a note into the trap?

Thanks!

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Hello there!! How’s going?!

We’ll be wondering to know if you guys are considering the new rules about the extension of 12 inches through the chassis according to the update on the 9th of the manual: Game manual update

I’d like to join others in saying that this is fantastic design, and your videos were very impressive. Personally I’d say this is probably the best Ri3D that I have seen so far.

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It is a very functional robot, thank you.
Will you share cad or software files with us to improve the robot? RI3D champ <3

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It appears it doesn’t go far enough up to score in the amp, plus the geometry is wrong. Theres also no method to open the trap.

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I really like what you have here.

Not sure what the frame dimensions are from looking at it, but do you think that the same core mechanism could be used as an under bumper intake if the frame was extended to create enough room for the intake to sit?

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Thank you :slight_smile:

Once we found a good arm angle, it was pretty consistent. Originally I tried to use the distance with the limelight, but it was easier to hard-code it. The limelight had some jitter with the 640x480 resolution at that distance, which wouldn’t have helped.

Another thing about our auto is that we had no drive encoders, movements were timed only. Using drive encoders, or localisation with AprilTags, lidar, etc. would help repeatability somewhat.

Teams with enough bandwidth would benefit from tuning their vision pipeline, filtering results, and having a solid control system for their shooter.

We considered the possibility of adding this functionality. It could be done fairly easily, we think. Exercise is left to the reader :wink:

Good!!

As we understand it, the 12” extension limit has not changed. Both robots are within the limits.

Yes! Check back in on this thread over this week.

IIRC, it’s square at 118” perimeter.

If we could do this again, we would have used a longer rectangle base.

Without having calculated it… I think so?

I didn’t work on the arm but I’m pretty sure the pivot point was chosen at random, and bolted on with wood blocks. If you raise the pivot point, you also reduce the required length of the arm to reach the amp — plus you may not need the sliding hook.

Thank you everyone for all the kind comments and questions! Keep the questions coming — we’re all so excited to share what we know, and the community response has been amazing. Cheers!

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Is the intake/arm cad coming earlier or will it come out with the rest of the info?

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Do you have any concerns about the intake/shooter being exposed to retain the low center of gravity? How is the center of gravity when the arm is up?

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So the intake/shooter cad will be coming in the next few hours with the day 3 brief update. Unfortunately we have all been extremely tired and so work on that post has been a bit slow.