1241 THEORY6 2016 CAD and Prototype Resources Release

[Shazzy]

FRC Team 1241, THEORY6, is proud to release the CAD for our 2016 robot, The Black Mamba, along with the prototype CAD and videos.

The final robot CAD, prototype CAD and prototype video links can be found below.

The final robot CAD is the exact model of the robot we used at the 2016 World Championship.

Along with the final CAD, we have decided to release the prototype CAD and videos to demonstrate our prototyping process. The prototyping this year was integral to our most successful season thus far. The prototype CAD was finished day 4 of build season leading to the completion of the fully integrated prototype robot on day 8. This meant a fully automated prototype with the ability to intake and shoot.

Final CAD: https://www.dropbox.com/s/8sa9qfshin...T.stp.txt?dl=0
Prototype CAD: https://www.dropbox.com/s/fk98bvub3w...embly.stp?dl=0
Conveyor Prototype: https://youtu.be/91ZqyVybQOY
Intake Prototype: https://youtu.be/_SuWmVsbzuw
Shooter Prototype: https://youtu.be/WuuOIn_LKXM
Integrated Prototype Robot: https://youtu.be/NEcI8RQc-y8

If you have any questions or want more specifications, feel free to ask!

[GeeTwo]

BOFFO!

We did a wooden prototype that we followed up in aluminum in 2013, but this is quite frankly over the top. (cue video of my brain exploding).

[bkahl]

That wooden prototype prolly could've won a few regionals this year.

[Sperkowsky]

Out of curiosity what was the reasoning behind using so many Bane bots wheels opposed to the more economical solution of rollers.

[bkahl]

Originally Posted by Sperkowsky

Out of curiosity what was the reasoning behind using so many Bane bots wheels opposed to the more economical solution of rollers.

The small wheels are actually relatively cheap in bulk, only about $2 ea in quantities of 50+.

I've also seen bulk banebots wheels on eBay for pretty cheap.

Cutting hex shaft to length and throwing wheels on it is also hella easy.

[C.Lesco]

Your prototype looks better than our finished product. You were a great team to play against in north bay and super friendly for a good team. Really excited to see what makes your robot ticks, thanks for the upload!

[Karthik]

Originally Posted by bkahl

That wooden prototype prolly could've won a few regionals this year.

Probably is an understatement.

Thanks to 1241 for putting these resources out there for the entire community. You had one of the best robots in the world this year; it'll be great for everyone to see how it all came together.

[Max Boord]

I cant seem to open it in Autodesk Inventor 2017. The file is named "000_ROBOT.stp" but is a text file.

[EmileH]

Originally Posted by Max Boord

I cant seem to open it in Autodesk Inventor 2017. The file is named "000_ROBOT.stp" but is a text file.

https://a360.autodesk.com/viewer/#id...designtype=stp

[AdamHeard]

Originally Posted by Max Boord

I cant seem to open it in Autodesk Inventor 2017. The file is named "000_ROBOT.stp" but is a text file.

It showed up as .stp.txt to me. I renamed it .stp and it worked.

[IG100MagnaGuard]

I loved your robot this year. I have to say it was one of my favorite tall shooters this year and an elegant intake to boot.
Thanks for these resources and I look forward to seeing you in the future.

[asid61]

I'll be rifling through the CAD later, but for now:
What changes were made between the wooden prototype and the real bot? Specifically, did anything perform significantly better or worse on one version? Was the wooden prototype better in any areas?
Will you be bringing the prototype bot to any offseason events?
How were you able to construct the prototype so quickly!?

[Kevin Leonard]

Can I ask how you decided what locations on the field to shoot from? While most teams selected either the batter or the Outer Works as their primary shooting location for protection, you tended to set from a variety of unorthodox locations in addition to some of the more common ones.

I'd love to hear the thought process that went into deciding those, or did those come after the robot was already functioning?

[pilleya]

Originally Posted by Sperkowsky

Out of curiosity what was the reasoning behind using so many Bane bots wheels opposed to the more economical solution of rollers.

I’m counting 15 medium sized BB wheels for each roller

At $2 each for bulk purchasing that’s only really $30 with probably $5-10 worth of spacers if using VEXpro ones

If you look at a decent alternative such as 1.5” OD Latex tubing stretched over an aluminium tube, you are probably going to be looking at $20-30( depending on what length you purchase) just for the Latex tubing, and $5 for the Al tube so there isn’t much of a price difference.

Plus a ½ hex shaft is much easier to interface with other COTS parts

[Jash_J]

Originally Posted by Kevin Leonard

Can I ask how you decided what locations on the field to shoot from? While most teams selected either the batter or the Outer Works as their primary shooting location for protection, you tended to set from a variety of unorthodox locations in addition to some of the more common ones.

I'd love to hear the thought process that went into deciding those, or did those come after the robot was already functioning?

After analyzing the game during the first weekend of build, we realized that there was only one protected zone - the outerworks. We also realized that shooting from the outerworks would be tough to do if we wanted to maintain a 95%+ accuracy rate which we set as one of our criteria. Therefore, we ensured that we had a multitude of locations to shoot from regardless of any defence being played.

Our primary shot requirement was the batter shot and the just off batter shot, where we would sit off the batter and shoot. We felt that this shot should be our primary shot because we would be closer to the goal, thus also increasing the accuracy of the shot.
Our secondary requirement was to ensure we could shoot from where we liked to call the "spy" box. It was in the far left corner of the courtyard where we could press up against both the side rail and opponent wall to shoot from. We did not use this shot come competition much but we felt like this shot would be slightly more accurate than the outerworks shot because we could not be moved once in that location and it was slightly closer than the outerworks.
Finally, our third requirement was to shoot from the outerworks. This was the last requirement because its distance to the goal was the farthest (and subsequently the hardest to nail).

Combining these shot ranges, we realized this allowed us to shoot from nearly anywhere on the field after doing some calculations and building the prototype. To ensure a higher degree of accuracy we designed a fixed shooter angle with only speed as the varying quantity. Our "diamond plate" shot became our most effective, but in reality it was the same as the just off batter shot. The turret just helped adjust for the angle difference.

TLDR: Shot locations were decided based on accuracy (the farther the shot location, the less accurate the shot would be). In addition, the turret helped increase our shot range.