2020:Power Cell Shooter

Team Leads:  Matt D. & Joe M.

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Prototyping 1/5/2020-1/11/2020

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Overview:  Based on initial team brainstorming and sketching, as well as the information from Strategy Subteam, we determined to prototype:

• A basic shooter roughly based on the 2451 PWNage design.
• To have the capability of switching to different types, diameters and duromiters of wheels.
• Change the geometry of the shooter to test what parameters produces the most reliable shooter

Calculations:  We computed the following

• We calculated the velocity and angle needed to score into the outer goal at various distances.  Calculations are saved as "Trajectory-RY" followed by what the calculations were for (eg "Trajectory-RY Lowbot")
• We calculated the needed velocity and time the power cell imnteracts with the wheel.  These are saved under the "Power" tab in the "trajectory-RY cp"

Observations:  We observed the following over the course of prototyping:

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Decisions:

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Need to do:

• Finish prototype 
• Test prototype and determine which wheels + motors to use.

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Design 1/11/2020 - 1/18/2020

Overview: After discussion regarding two different shooter designs, including a turreted shooter and a stationary shooter, we decided to go wiht the turreted shooter based primarily on the shooter made by team 2451 PWNage in 2017.

Discussion: There were several concerns regarding the design and execution of a turreted shooter. These concerns include:

• A need more more space and weight allocation to accommodate for the extra parts that would make the turret spin.
• There are more parts to fabricate and assemble.
• The turret offers difficulty for the programming team.

We also discussed the assumptions of what designing a shooter necessitate. This includes:

• We will require vision lock on so we can still maneuver the turret if defense is being played on us.
• There will need to be some form of angle adjustment for the trajectory. This enables us to shoot from different positions on the field. 
• We decided that it is ok to pin the turret into a fixed position if necessary. This is because the programming for the turret will be complicated, and therefore the last priority.

Decisions: We decided to design a shooter that is eqquiped with a turret similar to that of team 2451 PWNage's 2017 shooter design.

We confirmed this decision on the ideas that:

• Designing a turret into the design would not limit our capabilities, as we can fix the shooter in one postion if necessary.
• We have already built team 2541 PWNage's shooter before and we have the CAD. All we need to do is to scale up the drawings to accomodate for the Infinite Recharge game piece, the powercell.
• If we did not design a turret, then we would have to completely design a new shooter, ultimiately taking more time.

Need To Do: 

• Currently, we need to complete the scaling of the 2451 PWNage design to fit the powercell and the mechanism by which they are transported to the shooter.
• We need to complete the CAD parts and then the CAD assembly of the shooter. 
• Send part drawings to Harris for fabrication and then fabricate the parts that we have the recources to make. 
• Assembole the shooter!

The picture you see here is what the above notes are based upon. This is the result of the discussion about out choice to design and build a turret:

https://lh3.googleusercontent.com/uzJTCZ2zgjJXuuc17QtEed2Si5iY_prKAZ5TKGvfK6fnrdi-jsLD_FA8aqE1FBPsSkTARFW4m7vGers3ysHFsQGmwjoZOX6shzIMnGGvLyI4KQ5d5BHPdrd3Q-UFtxc2C1P4SNs4WQM-Oqs9MuWGoJkiqwUOArhdE29uMp42juKNSWR4E1wsna9NjcJemISWvq_bB3Zsnd6oPYImDwUMqNOqc824QKEWEcczXZvj9Zlu2taUW3ZKUcwt0PHirDRY4nFgxGZYFoyODzG1e1BG4WGAYuzD66PIbSMtnZQArOcgs6oIIusQlopUBNoWe9xESX5M4mk3EhgNCg4SnwcyoT2tA2ObDvammN0R1ZKKS1qCNOQInC08Vtc5basoYPYcNWgstIJnY-7a63fqJDfffmqTfQKMGvQwx-pUEzNCJz81cA6GZ7oGogk606CqfIBNorS4fd2fQ1Dbtg1MJLqZpYcA6BZvegWxUnGBQIuM3UrhlmE5La9tYqdo9eV6bRLWPm4sYquADUHgFMXLzHLhuq7qf3s1Aple6_T6orsNsNAAk9UdH6imdnx7ueZFGfMY1KOdejC16OW7aAv1dAV7isam37f16uBGCZO_uUm5mMwGenK56k9fHlwtzYdZbzqGBEfq9FBV1ZqykJoEyJ3A0C9mDM0sfPbLNAKOywcwHX-gzUQwwzPwThDK=w1250-h937-no

 

1/11/2020 

• Today we finished most of the design for the shooter and the turret. The shooter will rest on a turret attached to a base plate that will spin a planned 180 degrees.
• The design includes 2 NEO motors that control 2 thin colson wheels that launch the powercell. 
• The turret is comprised of a 3D-printed10 inch sprocket consisting of 130 teeth. Under that is an aluminum base plate that is the actual bearing.
• There is also a 3D-printed locking plate that keeps the base plate from shifting out of it's track.

 

 

 

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