Wiki

Programming: Common Beginner Mistakes and FAQs

TBD

Note:

make process closed with exit code : 2 means ‘code could not compile, your code probably has errors’. When creating a thread for help, please attach the whole log with your code.

https://help.vex.com/article/120-how-to-use-blocking-vs-non-blocking-code

Force Compile of Files

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V5 Architecture and Troubleshooting

V5 architecture diagram (may need to move to advanced topics): The PROS of PROS

V5 Troubleshooting:

Tips/warnings for v5?

  • V5 mini USB Port / use magnetic cable
  • V5 Motor inserts / be careful
  • V5 ports and static

Make sure you have installed the latest VexOS firmware which could be found here:

Make sure that radio type is to VEXnet and not Bluetooth:

run your program. press the button on the V5 brain to toggle between the user program screen and the vexos screen.

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Engineering Design Process

https://www.google.com/search?q=engineering+design+process
TBD

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Engineering Notebook Resources

(Screen for redundant / duplicate topics)

Design Award Tips?
Starting the Engineering Notebook
2915A Engineering Notebook 2016
Notebook Tips
Engineering Notebook Tips Selection and Strategy
How should I start off my notebook? (Summer without teammates)
what are Some Tips to add to the Notebook?
Engineering Notebook Expectations At Worlds
Example of an award winning notebook?
What is the best piece of advice you could give for an engineering notebook to be successful?
Notebook setup/layout


engineering notebook 1575A 2015-2016.pdf (45.0 MB)

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CAD software: links, tutorials, tips

VEX w/ Fusion 360 Tutorials

https://www.autodesk.com/education/competitions-and-events/vex/recommended-software

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Preparing for the competition day

References (redundant?):

https://www.roboticseducation.org/resources-library/
101 Things I Wish I'd Known Before My First VEX Tournament
Advice for first competition?

https://www.vexwiki.org/robotics_competitions/101_things
https://www.roboticseducation.org/documents/2013/06/101-things.pdf/

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Tips on how competition works

To be expanded:

  • Qualifications
  • Scouting
  • Alliance selection
  • BO1
  • Skills
  • Judging
  • Who qualifies
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Beyond the competition

What else is there in VRC beyond going to competitions?

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School based vs independent team / fundraising

TBD

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Tips for organizing the team

Getting Started in Robotics (Tips and Advice)

https://www.roboticseducation.org/resources_library/how-to-start-and-organize-a-vrc-team/

List of products/items to purchase?
What parts should I not buy?

Should this be here or moved up to post 25?
Help motivating procrastinators to do their job
How to help combat un-involved team members

How many people on a team?

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Tools

Sort tools in order of importance…
Add pictures?

  • wrenches 1/4, 11/32
  • screwdrivers hex (5/64,3/32), star (T?)
  • pliers, needlenose pliers, diagonal cutters, etc…
  • tabletop grinder
  • dremel

Custom Tools:

Tips:

Don’t strip screw heads - sharpen Hex screwdrivers regularly!

Safety considerations:

Wear goggles!!!

Color coding screwdrivres and wrenches:
vex_tool_set1

Special tools

Insert puller:

insert_puller

Drilling template:

drilling_template_1

drilling_template_2

Bearing cutting template:

bearing_template_1

bearing_template_2

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Alternative part sources

https://www.robosource.net

VEX Cost Reductions
Vex Low Cost Identical Legal Parts Compilation
Cheaper Option for Nylon Washers

Cheap Alternative Tiles

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Reserved for all Omni tank drive

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Reserved for X-Drive wiki entry

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Reserved for H-Drive wiki entry

https://en.m.wikipedia.org/wiki/H-drive

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Reserved for Mecanum wheels drivetrain wiki entry

Code examples:

A Holonomic drive is free to move in any direction without having to rotate around its axis.

https://en.wikipedia.org/wiki/Holonomic_(robotics)

One form consists of 3 or 4 omniwheels mounted at angles to each other. It is good for lateral movement, and increases speed and power of turns. However, linear drive speed and power are decreased since some or all of the powered wheels run at angles to the bot’s motion. All wheels must be omni wheels in order for this drive to function. The 4-wheel version is referred to as " X-Drive".

Another omniwheel Holonomic drive is the “H-Drive”, where 1 omniwheel is placed at right angles to the other four conventionally mounted omniwheels.

Mecanum drive is holonomic drive where four mechanum wheels are placed in a tank drive format. The wheels should look like this when looking from top:
image
Like all holonomic drives, mechanum bots can strafe, and does so with a simple rectangular base. However, mechanum wheels have rollers that slip, reducing traction and pushing power.

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Reserved for additional drivetrain discussion entry

Kiwi:

Lynfield:

Swerve:

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Reserved for additional drivetrain discussion entry

Are tracked vehicles viable in Vex?

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Reserved for additional drivetrain discussion entry 1

Reserved for additional drivetrain discussion entry 2