Re: [Ri3D] BOOM DONE. We're not done...
 

I am still in awe as to how you guys pulled this off. This robot looks like it can compete with the best of them.

I really like the acquiring system and the consistent catapult. And Im baffled at the amount of electronic features this robot has built into it.

A sure winner of the Ri3D lot if you ask me.

Re: [Ri3D] BOOM DONE. We're not done...
 

Green Cord. It is the metric size solid core urethane round belt on this page from McMaster I use a ton of the 6mm (8112K33), but the 4mm stuff is also great. Run it around the pulleys to get a free length, cut the belt 3-6% short, use a lighter to melt the end (act like you are making a golden brown marshmallow), press together the ends, hold til cool, trim the joint with a side cutter. It is a REALLY useful way to spin something at a distance.

Pulleys are laser cut acrylic 1/8th thick. We cut a ton of these with a "FIRST standard" bolt hole pattern 1/2" increments. We then can stack up plates to make pulleys. These are not just good for actual robots but especial for prototyping.

Loop Gauge of wire is 1/4" steel. We had it laying around the shop.

Toro Horns. You are not going to believe it: Schedule 80 PVC (thicker wall than Schedule 40). I heated up some 1/2" hex shaft and melted it in place so that a Versaplanetary shaft fits tight inside.

Dr. Joe


* which roughly stated is (6) #10 holes on a 1.875" bolt circle with a 1.125" center hole.

Re: [Ri3D] BOOM DONE. We're not done...
 

Does Ri3D give an "Innovation in Control" award? If so, you nailed it.

Re: [Ri3D] BOOM DONE. We're not done...
 

Great job, I love how you all managed to innovate in such a short amount of time.

What was the final gear ratio for shooter?

Re: [Ri3D] BOOM DONE. We're not done...
 

Bravo, my new favorite RI3D team, i'd not be surprised to see this robot in the championship finals.
I really loved that bumper idea and you really innovated with the control stuff and sensors. Are you going to post the cad models and code you used? Where?

Re: [Ri3D] BOOM DONE. We're not done...
 

Working on a spec page but 15:1 is the short answer.

Re: [Ri3D] BOOM DONE. We're not done...
 

Will there be a vid on the youtube channel or twitter or something on robotin3days.com when you guys put up a cad? Right now each team's blog is just bios of you guys like its been for forever and the only place where you see new stuff is youtube and twitter. Also the only CAD for Ri3D that I found was team Andymark and it was on a CD post - Are there any more currently available?

Re: [Ri3D] BOOM DONE. We're not done...
 

How did you handle the Max RPM difference between the CIM and Minicim? Did you do anything or are they close enough to be interchangeable?

Re: [Ri3D] BOOM DONE. We're not done...
 

Is that gear ratio including the sprocket, or just the gear box?
Also thank you for what you are doing, your robot is really amazing.

Re: [Ri3D] BOOM DONE. We're not done...
 

I'm completely in awe of this "3 day robot", Amazing!!

We are planning on doing a similar process with a range finder + display, though it will be with our own twist of course.
We too plan on using a couple of onboard co-processors to do this work. Arduino for display and PCDuino for vision. This will eliminate the need for any additional WiFi bandwidth.

I would love to see the Arduino code you are using and any specs you might have on the US sensor you used.

What, if any, protocol are you using to communicate between the Arduino and the cRio?

Re: [Ri3D] BOOM DONE. We're not done...
 

Working on publishing this. Stay tuned.

Joe J.

Re: [Ri3D] BOOM DONE. We're not done...
 

Very Nice.
What is the reduction used for the macanum's?

Re: [Ri3D] BOOM DONE. We're not done...
 

What's the tooth count on the top drive sprocket??

Re: [Ri3D] BOOM DONE. We're not done...
 

I am assuming this is in the works as well, but we are really curious on the reduction used for the Toro Horns and if you feel that was the optimum reduction or would have used something else if you had access to it?

Re: [Ri3D] BOOM DONE. We're not done...