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Show HN: High school robotics code/CAD/design binder release

chiefdelphi.com

21–28 of 28 posts

Re: Show HN: High school robotics code/CAD/design binder release

#22
post #9

I'm not even that old but the phrase "high school robotics" would've been pure daydreaming back then. Incredibly exciting that you can do this!

Back in the days of personal computing, an administrator at my high school managed to secure funding for a robotics course despite there not being anyone at the school who knew more than basic wiring.

We wound up buying an Apple ][ and a Rubbermaid trash can and an early voice recognition module (Cognivox) which we then mounted on a set of wheels and put the monitor on a lazy susan on top and the opening was made into a drawer for the computer/keyboard, and the bottom was opened up to have a latchable door where an extension cord and other accessories could be stored.

We called it CTC-1 (Computerized Trash Can, Mark 1) --- always wondered what happened to it and the lab of TRS-80 Model IIIs...

I still regret not over-ruling the finance committee and buying my kids a Lego Mindstorm set when they first came out.....

Re: Show HN: High school robotics code/CAD/design binder release

#24

Why OnShape? Why not Commonwealth Robotics Studio or some other opensource CAD option?

Super easy for collaborative work. As good as some opensource CAD options are, there isn't really anything out there in terms of OnShape for collaborative CAD work.

Re: Show HN: High school robotics code/CAD/design binder release

#25

You left your credentials in the open on your github site. Please change them post haste!

If you're referring to the obfuscated ghp_ token, it's a read:packages token, documented here: https://github.com/Mechanical-Advantage/AdvantageKit/blob/ma...

Re: Show HN: High school robotics code/CAD/design binder release

#26

Why OnShape? Why not Commonwealth Robotics Studio or some other opensource CAD option?

Commonwealth robotics studio doesn't seem to be suitable for designing typical FRC robots. It looks like it's meant to design and simulate robots that mostly consist of servo-driven legs around a central body.

The only open-source CAD option I've seen that might be suitable for doing this kind of design work is FreeCAD, or its Ondsel fork. There are not many people available to FRC teams to teach them how to use these programs, and there's a high risk of them running into serious bugs or limitations.

Most FRC teams use professional CAD packages (like Autodesk Inventor and Dassault SolidWorks). These packages are offered to teams for free. Many teams have mentors with professional experience using one of these programs. OnShape has taken over in the last couple of years as the most popular, because it is easier to license, doesn't require installation permissions, works on any device with a web browser, has an easy to understand and administer way for multiple people to collaborate on a model, and has a critical mass of community scripts, part collections, and tutorials.

Re: Show HN: High school robotics code/CAD/design binder release

#27
post #26

Why OnShape? Why not Commonwealth Robotics Studio or some other opensource CAD option?

Commonwealth robotics studio doesn't seem to be suitable for designing typical FRC robots. It looks like it's meant to design and simulate robots that mostly consist of servo-driven legs around a central body. The only open-source CAD option I've seen that might be suitable for doing this kind of design work is FreeCAD, or its Ondsel fork. There are not many people available to FRC teams to teach them how to use thes…

Just to add, FreeCAD still doesn't ship with a way to do constrained assemblies of parts. You can arrange multiple parts together without any constraints on them, but if you want them constrained together then you have to pick an external workbench (there are 3 choices!) and install it separately.

https://wiki.freecad.org/Assembly

SolveSpace has the capability built-in, but its constraint and geometry solvers are not robust enough for designing full FRC robots. It either gets very slow, or start saying that constraints are unsolvable (even though they are), or starts generating geometry with extra or missing faces.

Re: Show HN: High school robotics code/CAD/design binder release

#28
post #25

You left your credentials in the open on your github site. Please change them post haste!

If you're referring to the obfuscated ghp_ token, it's a read:packages token, documented here: https://github.com/Mechanical-Advantage/AdvantageKit/blob/ma...

Yes, that is it. Seemed fishy so I posted... post haste :)
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