4915 Spartronics | 2024 Build Thread | Open Alliance

Spartronics

Welcome to the Spartronics 4915 Build Thread!

This is the first year our team will be part of Open Alliance :partying_face:. We are very excited to be a part of this great community!

A Bit About Us:

Spartronics 4915 is the First Robotics team of Bainbridge High School in Bainbridge Island, Washington. We are student-led with six awesome student captains this year. This is our 11th year competing as a team in the PNW district. We are looking forward to a great season of building robots and having fun.

Schedule:

Our team meets once every two weeks during the off-season, and MWF Sat during the build season. We will try to make at least one post October, November and December. During build season we will aim for two to three times a week.

Team Links:

GitHub
Website
Facebook
Instagram

First Update!

In the past couple of years, we have done a five sub-team approach: Mechanics, Marketing, Programming, Electronics, and Design. This year, however, we are combining Design with Mechanics and creating a “Design Group” as we have had in years past, where students (not just from mechanics) gather together to design the robot during build season. The idea behind this approach was to get more people to have skills in both CAD and machining and to keep training good designers for the years to come.

That’s all folks :wave:. Another update will come soon after our next few meetings!

- Joseph

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10/18/23 and 11/1/23

This update is for the meetings on October 18th and today (November 1st).
All of the team signup forms were submitted and our team is 43 strong including both students and mentors! The split between the four subteams is:

  • 9 Business/Marketing
  • 8 Electronics/Pneumatics
  • 18 Mechanics
  • 8 Programming

All of the subteams have been meeting together and preparing for the season.

Business/Marketing

Just today the Marketing subteam did the sponsor walkabout. They went about checking in on sponsors and trying to find potential ones. They were successful! Multiple businesses have said they will consider sponsoring and some of our existing sponsors would like to extend their sponsorship! :partying_face:

Programming

With a new batch of programmers this year, the Programming has been hard at work teaching Java and the FRC libraries to the new members. Programming this year is revamping the swerve code too. This year is our second year on swerve drive. Least year the swerve drive code was all custom, but this season Programming is migrating to YAGSL so we have a maintained package with more advanced features.

Electronics/Pneumatics

Electronics has also been introducing the new members to what Electronics does. The last two meetings were devoted to learning about the different motor types (Brushed and Brushless), learning how wiring works, and organizing the Electronics tool drawer.

Mechanics

As this year mechanics and design is combined, the time during the meetings have been split between tool training and design training. These last two meetings mechanics got in groups to make drill bit organizers (more on those later) with the bandsaw and drill-press. Next meeting mechanics will take the certification test.

In past seasons, the team has suffered from misplacing simple tools (drill bits, hex keys, etc). We have three drill bit sets, yet there is only about one of each commonly used size between the three. This adds a lot to the time required to manufacture parts. Every time a 10-32 hole needs to be drilled a bit has to be hunted for. Over the summer our Design mentor Chris came up with this ingenious organization system.


Each type of drill bit (10-32 pre-tap, 8-32 close fit, 1/4-20 free fit, etc) is assigned a color, as are the tools for each bolt type (head hex key, wrench for nuts). The tools are taped with the color and the drill bits are painted in the flutes. This organization system lets us put all of the tools we use for 99% of operations into one easy-to-access place. When a bit or tool is taken from the trays the color-coding tells the user where to put it back to cut down on losing bits and tools.
The aluminum tubes on the left were made by mechanics for the training. Each one has the three common drill bits (pre-tap, close fit, free fit) for 8-32, 10-32, and 1/4-20. These blocks go in the shop so you don’t need to go digging in the drill bit sets whenever you need to cut a simple bolt hole.

These sheets were also printed out, explaining what each bit is for and when and where we use them.

That should be everything we did during those two meetings. Time to go do homework. :wave:
- Joseph

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While I worry a bit about the upright drill bits on the edge of a table, that is a very nice organization system.

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Kickoff!

Yet another year passes without a water game :pensive:.

In this post I am going to sum up what strategy and design has done these past two days. Enjoy!

Strategy

Strategy + Design Group met first as big Strategy and worked on learning the rules. We created a document of all of the game-specific rules and requirements.
After that strategy created a needs/wants list. I am sure most of you are familiar with it. If not, the list is comprised of things (abilities, features, attributes) that are needed to use our strategy during the match, and things we want but do not absolutely need to play our strategy.

The Needs:

  • Vision
  • Ground Intake
  • Auto that crosses line and scores pre-loaded piece.
  • Drive everywhere except under stage.
  • Play defense.
  • Score amps.
  • Score speaker from subwoofer.
  • Be able to score the trap.
  • Be able to park, climb the chain, and harmonize.

Wants

  • Intake directly from source.
  • Multi-piece auto.
  • Score speaker from far away.

We want a robot this year that can do all of the actions in the game, but if one has to be cut off, the first one would probably be the trap.

Design

Design got together after strategy ended on day 2 to discuss the robot constraints this year and brainstorm ideas. While we are still in the process of brainstorming, we have nailed down a few things.

  1. Chassis size: We have chosen the dimension to be 28x28 inches. The reason was to give us room to work with the frame perimeter, and do just have a little bit of a smaller bot in general.
  2. Over-the-bumper intake: We are using normal Mk4i’s this year, so over-the-bumper intake is pretty easy to design and build, and should work very nicely.

Another post will come out tomorrow after our meeting. We hope to get some prototyping done.

Homework time!
- Joseph

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4915 2024 Robot Cad: “Nemesis”

First off, apologies for not posting this season. School and robotics have been hectic and I have not been on top of documenting what we have been doing. However, one thing I do believe strongly in is releasing robot cads, so here it is:

Robot Full Cad

Elevator + Indexer Cad

Intake Cad

Chassis Cad

Shooter Cad

(Climber Cad is still unfinished)

Our goals with this robot is:

  • Fast, reliable shooting from many positions.
  • Ability to easily dump in the amp.
  • Be able to ground intake and source intake.
  • Climb.

Trap is not on our priority list. Maybe we can do it, and maybe it will happen one day. Right now we are focusing on just making a good bot for all of the other points.

An Explanation on the Funny Inner Workings of Nemesis

First off is a ground intake that will pull the note into the intake, but not through (yet).
The intake will rotate up and hold the game piece in the intake.
This allows the driver to decide between the two options:

  1. Shoot: The Note feeds through the intake, through the polybelt conveyor, and into the shooter.
  2. Amp: The elevator extends up and drops the note back out the intake into the amp.

I will post images and a more detailed explanation when I have time later.

See you later,
Joseph
Untitled

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