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Unread 01-28-2018, 07:37 PM
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FRC 319 - Public CAD 2018

Team 319 is proud to release our public Onshape CAD model for the 2018 season!



As some of you may have noticed*, we're developing our CAD in a 100% open format using Onshape this year. This is a living and breathing CAD file, so you'll see it change daily, maybe even hourly. The model is free to copy and borrow ideas from, we simply ask that you reach out to us and let us know if you found it helpful. If you have any questions or suggestions, please ask below. We're hoping to learn as much as we can.

NOTE: We're still working on many collector prototypes, so we've allocated approximately one bench grinder's worth of space and weight. This is reflected in the model. The prototypes aren't secret, they're in the CAD, but they're ugly ducklings right now.





*Looking at you 971 and 190.
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Unread 01-28-2018, 08:21 PM
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Re: FRC 319 - Public CAD 2018

Bench grinders are heavy
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Unread 01-28-2018, 09:04 PM
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Re: FRC 319 - Public CAD 2018

Looks like a solid design Ty! 4 motor 775 shifting gearbox for your lift, thats a lot of power.

As much as I love this game strategically I worry that so many of the robots are going to be structurally designed very similar. I'm looking forward to the designs that prove me wrong
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Unread 01-29-2018, 07:49 AM
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Re: FRC 319 - Public CAD 2018

This is such a cool way of working. I'd love to hear more about your actual experiences working as a team with Onshape as opposed to something like Solidworks or Inventor.
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Unread 01-29-2018, 07:56 AM
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Re: FRC 319 - Public CAD 2018

Looks great!
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Unread 01-29-2018, 09:07 AM
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Re: FRC 319 - Public CAD 2018

4909 moved to OnShape this year and it's been great. Making changes and having multiple kids work at the same time has been huge in our CAD development. It's been awesome to see 20 kids in the lab all working on CAD. It also allows us to work on the model anywhere as opposed to having a computer that has the CAD program installed.

The only issue we had early on was having 10+ users working on one model at the same time. It would hang up or slow down. Quick fix was to repeatedly re-share the model. Better fix was changing the account to OnShape's EDU program. That has solved the issue.
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Unread 01-29-2018, 09:25 AM
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Re: FRC 319 - Public CAD 2018

Quote:
Originally Posted by Josh Goodman View Post
This is such a cool way of working. I'd love to hear more about your actual experiences working as a team with Onshape as opposed to something like Solidworks or Inventor.
Onshape is, without question, the best decision we've made in the past two years. I firmly believe it is the best CAD solution for a FIRST robotics team.

Think of it as the Google Docs for CAD:
  • Multiple people can edit the same document at one time.
  • No need to worry about saving files or losing changes if there's a crash.
  • Full version and history control.
  • Anyone can edit from anywhere without installing anything.
  • Amazing public library support.

It also has some features and tools that make it more powerful than conventional CAD systems.
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Unread 01-29-2018, 09:47 AM
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Re: FRC 319 - Public CAD 2018

Quote:
Originally Posted by Ty Tremblay View Post
Onshape is, without question, the best decision we've made in the past two years. I firmly believe it is the best CAD solution for a FIRST robotics team.

Think of it as the Google Docs for CAD:
  • Multiple people can edit the same document at one time.
  • No need to worry about saving files or losing changes if there's a crash.
  • Full version and history control.
  • Anyone can edit from anywhere without installing anything.
  • Amazing public library support.

It also has some features and tools that make it more powerful than conventional CAD systems.
I agree with the upsides, but currently it's just too slow for any serious CAD work...

I am very excited for when it's able to bridge that speed gap though. It can't be too far off in the future.
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Unread 01-29-2018, 10:01 AM
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Re: FRC 319 - Public CAD 2018

Quote:
Originally Posted by AdamHeard View Post
I agree with the upsides, but currently it's just too slow for any serious CAD work...

I am very excited for when it's able to bridge that speed gap though. It can't be too far off in the future.
On poor network connections it can get pretty frustrating. I haven't noticed any deal-breakingly slow performance, but it's probably because I'm not fast at CAD by any means. Teach me your ways.
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Unread 01-29-2018, 10:41 AM
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Re: FRC 319 - Public CAD 2018

Those electronics components look familiar . It's awesome that 319 has made their cad public in season and a really great resource for the community to learn from a top team like 319. Thanks for sharing!
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Unread 01-29-2018, 10:45 AM
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Re: FRC 319 - Public CAD 2018

Quote:
Originally Posted by AdamHeard View Post
I agree with the upsides, but currently it's just too slow for any serious CAD work...

I am very excited for when it's able to bridge that speed gap though. It can't be too far off in the future.
The strides OnShape has made already since I first saw it in Beta a few years ago to now has already been amazing. As soon as this gap is closed a bit more, it will be very hard to argue against using it.

Freeing students from 'good enough hardware' to run a CAD program is definitely a game changer for teaching students.


Ty, what kind of "CAD team size" is in and out of these parts everyday? Would love to add that data point to my headspace.

-Brando
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Unread 01-29-2018, 10:50 AM
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Re: FRC 319 - Public CAD 2018

Quote:
Originally Posted by Brandon Holley View Post
Ty, what kind of "CAD team size" is in and out of these parts everyday? Would love to add that data point to my headspace.

-Brando
We typically have 4/5 people logged in and manipulating the CAD on the build weekends and haven't run into issues, but we're a smaller team.

Loading times for models seem to depend on model complexity, network speed, and computer graphics/processing (in that order). I have no trouble whatsoever loading the full field with our full robot on my CAD station, but the same model can lag pretty significantly on the high school's 5+ year old classroom computers.

The important thing for me is the lower barrier for entry. Our students can just sign up for an account, join the Onshape tea, and boom, there's the CAD for them to start poking around on.
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Unread 01-29-2018, 11:17 AM
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Re: FRC 319 - Public CAD 2018

How does onshape compare to something like fusion 360? We've used fusion for the past 3 years and it has been much better than using inventor on the slow school computers we have. I played around with onshape many years ago when it came out and it's awesome to see that it's progressed far enough that FIRST teams are using it.
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Unread 01-29-2018, 11:20 AM
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Re: FRC 319 - Public CAD 2018

Next off-season, I will be interested in exploring new options for sharing CAD among our group. Currently we use GrabCAD and it usually works well enough, as long as people (me) remember to follow protocol in designing and saving parts and assemblies. This is a useful thread, I will continue to follow. Thanks!
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Unread 01-29-2018, 12:26 PM
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Re: FRC 319 - Public CAD 2018

Quote:
Originally Posted by Jonathan Norris View Post
Looks like a solid design Ty! 4 motor 775 shifting gearbox for your lift, thats a lot of power.

As much as I love this game strategically I worry that so many of the robots are going to be structurally designed very similar. I'm looking forward to the designs that prove me wrong
We'll probably cut down to 3 for the season, but it didn't cost any extra to put the mounting for 4 in there. If we can fit it in, and still want to after week 1, we're hoping to take another bot up with us in the end game.

I honestly feel like 319 is in the minority with an elevator, based off of the designs I've seen.
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