997 Spartan Robotics 2020 Build Log

First lets get the prerequisite CAD release, here you can find any CAD you would ever want (or don’t want) https://grabcad.com/delr1n-1/models

Now that we have that out of the way.

Welcome to day 0 of team 997s 2020 build log, here you will be able to find all of our strategy, prototyping, design, programming and manufacturing. Though we are not part of #openalliance we hope to achieve the same goal of helping others where we can.

Day 0
We have a preliminary drivetrain designed, just a simple 6 wheel west coast with 4 falcons the link can be found here. https://grabcad.com/library/4-falcon-west-coast-drivetrain-1
Of course we will have to make changes to the size and maybe gearing but its a start.

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Here is our Github repository for 2020:

(I thought I would have more time to do this.)

Day 1

On day one we picked our primary strategic goals, these consisted of climbing and shooting into the high goal

Day 2

On day 2 we decided mechanism design and what we wanted to prototype. For our shooter we decided to prototype a pneumatic catapult and a hooded flywheel. For our climber we decided to prototype a simple hook design, a latched hook and a powered roller hook to try and balance the beam.

Day 3

Day 3 we started our prototypes.


We also started work on modifying the drive train for 8x5in wheels(hoping to start manufacturing on Wednesday).

Day 4

Today we continued the drive train modifications and are on track to finish the drive train CAD tomorrow. A second more adjustable catapult prototype was made and a more rigid hooded shooter was made(I don’t have pictures). There was also talk of a spring powered telescopic lift as a delivery mechanism for the hook.
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Day 4

On day four prototyping was continued, both shooter prototypes made their first shots.

Day 5

The drivetrain was finalized on day five.


Drivetrain production also started, first with the wheel shafts

Day 6

A prototype telescopic lift that was able to support most of the weight of a robot was prototyped.

Day 7

Day seven started with a prototype review, this resulted in us deciding against a rotary hopper in favor of a linear belted feeder. The intake was also started and it was decided that we wanted to push it out the front of our robot linearly instead of the traditional drop down style, this decision was mainly made to conserve space for the feeder system and climber.
Drivetrain production also continued with the frame being started as well as the gussets.

Day 8

On day eight we decided to pursue the telescopic lift as a climber and design work started on it. Prototyping work started on a new hooded shooter with an integrated belt path to test feeding variables.

Day 10

Day 10 came with a host of surprises, first was the arrival of our falcons that we almost immediately put on our practice robot from 2019. The second surprise was the completion of all of our driverails a whole 2 days early. The last was the (almost) completion of the intake CAD

Day 11

Today we reviewed block CADs that some of the design members made, from these we decided that we wanted to pivot our feeder and shooter hood so we could make it under the trench run, give us theoretically second shooter position one for up against the wall and one from the line, and it reduces complexity in the climber and ball feeder. We also completed our practice robots frame and sent it out for welding.


We also completed the gearboxes for our competition robot.

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