Star Wars FIRST GAME CHANGERS REV User manual

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2020-2021 FIRST® Tech Challenge
Basic ‘Bot Guide for REV
Part 2- Armature

2 | FIRST®Tech Challenge Basic ‘Bot Guide for REV- Part 2
Revision 1: 10/29/2020
Sponsor Thank You
Thank you to our generous sponsors for your continued support of the FIRST®Tech Challenge!

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Revision History
Revision
Date
Description
1
10/29/2020
Initial Release
Contents
Introduction........................................................................................................................................................5
What is FIRST®Tech Challenge?..................................................................................................................5
FIRST Core Values........................................................................................................................................5
Gracious Professionalism®................................................................................................................................5
Introduction to this Guide...................................................................................................................................6
History of this Guide........................................................................................Error! Bookmark not defined.
Introduction.....................................................................................................Error! Bookmark not defined.
Parts..............................................................................................................................................................6
Tips and Tricks...............................................................................................................................................6
Armature ...........................................................................................................................................................7
Tower Base....................................................................................................................................................7
Step 1: Prepare Upper Brackets (Make 4)..................................................................................................7
Step 2: Add Upper Brackets to Beams (Make 2) .......................................................................................8
Step 3: Prepare Cross Brace Support Brackets (Make 4)...........................................................................9
Step 4: Add Brackets to Cross Brace........................................................................................................10
Step 5: Add Screws to Cross Brace..........................................................................................................11
Step 6: Add Cross Braces to Beams ........................................................................................................12
Step 7: Prepare Tower/Chassis Brackets (Make 6) ..................................................................................13
Step 8: Add Tower/Chassis Brackets to Tower Base................................................................................14
Step 9: Add Tower Base to Chassis.........................................................................................................15
Tower Gear Assembly..................................................................................................................................16
Step 10: Prepare Brackets (Make 8).........................................................................................................16
Step 11: Add Brackets to Beam (Make 2).................................................................................................17
Step 12: Add Beams to Base....................................................................................................................18
Step 13: Assemble Gear Motor.................................................................................................................19
Step 14: Assemble Motor Gears...............................................................................................................20
Step 15: Prepare Motor Bracket ...............................................................................................................21
Step 16: Mount Motor to Bracket..............................................................................................................22
Step 17: Add Gears to Motor....................................................................................................................23
Step 18: Add Motor To Tower...................................................................................................................24
Step 19: Prepare Pillow Blocks (Make 4)..................................................................................................25
Step 20: Assemble Mid Gear Set..............................................................................................................26
Step 21: Add Mid Gear Set to Robot.........................................................................................................27
Step 22: Prepare Upper Gear...................................................................................................................28

4 | FIRST®Tech Challenge Basic ‘Bot Guide for REV- Part 2
Revision 1: 10/29/2020
Step 23: Assemble Upper Gear Set..........................................................................................................29
Step 24: Add Upper Gear Set to Robot.....................................................................................................30
Step 24: Continued - Final Positioning of Gear Train................................................................................31
Tower Arm & Gripper...................................................................................................................................32
Step 25: Prepare Servo Bracket...............................................................................................................32
Step 26: Assemble Gripper Servo ............................................................................................................33
Step 27: Add Servo Horn..........................................................................................................................34
Step 28: Prepare Rod End Bracket...........................................................................................................35
Step 29: Attach Rod End Bracket to Servo...............................................................................................36
Step 30: Prepare 90 Degree Brackets......................................................................................................37
Step 31: Add Servo to Beam....................................................................................................................38
Step 32: Prepare Ring Release Assembly................................................................................................39
Step 33: Add Ring Release Assembly to Servo Beam..............................................................................40
Step 34: Add Servo Bracket to Arm..........................................................................................................41
Step 35: Prepare Ring Holder Support Bracket ........................................................................................42
Step 36: Add Corner Bracket to Ring Holder Support Bracket..................................................................43
Step 37: Add Motion Bracket to Ring Holder Assembly............................................................................44
Step 38: Add Second Motion Bracket to Ring Holder Assembly...............................................................45
Step 39: Add Second Corner Bracket to Ring Holder Assembly...............................................................46
Step 40: Add Ring Holder to Arm..............................................................................................................47
Step 41: Add Arm/Gripper to Tower Gear Assembly.................................................................................48
Step 42: Add Battery Mounting Plate........................................................................................................48
Step 43: Plug in Motor and Servo.............................................................................................................50
Step 44: Add Battery to Robot..................................................................................................................50
Final Steps ......................................................................................................................................................52
What’s Next? ...............................................................................................................................................52
Visit the FIRST website for programming instructions and game rules............Error! Bookmark not defined.
Appendix A –Resources.................................................................................................................................53
Game Forum Q&A.......................................................................................................................................53
FIRST Tech Challenge Game Manuals........................................................................................................53
FIRST Headquarters Pre-Event Support......................................................................................................53
FIRST Websites...........................................................................................................................................53
FIRST Tech Challenge Social Media ...........................................................................................................53
Feedback.....................................................................................................................................................53

FIRST®Tech Challenge Basic ‘Bot Guide for REV-Part 2 | 5
Gracious Professionalism®- “Doing your best work while treating others with respect and kindness - It’s what makes FIRST, first.”
Introduction
What is FIRST®Tech Challenge?
FIRST®Tech Challenge is a student-centered program that focuses on giving students a unique and
stimulating experience. Each year, teams engage in a new game where they design, build, test, and program
autonomous and driver operated robots that must perform a series of tasks. To learn more about FIRST®Tech
Challenge and other FIRST®Programs, visit www.firstinspires.org.
FIRSTCore Values
We express the FIRST®philosophies of Gracious Professionalism®and Coopertition®through our Core
Values:
•Discovery: We explore new skills and ideas.
•Innovation: We use creativity and persistence to solve problems.
•Impact: We apply what we learn to improve our world.
•Inclusion: We respect each other and embrace our differences.
•Teamwork: We are stronger when we work together.
•Fun: We enjoy and celebrate what we do!
Gracious Professionalism®
FIRST®uses this term to describe our programs’intent.
Gracious Professionalism®is a way of doing things that encourages high-quality work, emphasizes the
value of others, and respects individuals and the community.
Watch Dr. Woodie Flowers explain Gracious Professionalism in this short video.

6 | FIRST®Tech Challenge Basic ‘Bot Guide for REV- Part 2
Revision 1: 10/29/2020
Introduction to this Guide
About This Guide
The Basic ‘Bot Guide is designed to be a resource for teams looking for a step-by-step instructional for building
a robot and a basic armature for the FIRST Tech Challenge competition. There are multiple versions of this
guide, previously called the “Push Bot Guide”.
This version the Basic ‘Bot Guide for REV-Part 2 has been created to use the new and differing parts in the
2020-2021 season’s REV kit of parts and builds upon the 2020-2021 Basic ‘Bot Guide for REV- Part 1 which
was released earlier in the season.
Parts
•REV FTC Competition Set
oTools included with the REV FTC Competition Set
•Electronics Modules and Sensors set
•Control & Communication Set 1 or 2
•(Optional) Only the tools included in the FTC Competition Set will be needed to build the chassis. The
screws and nuts are a standard size and having more tools may allow more students to participate at
the same time.
•(Optional) A ruler is not needed to build this robot, but it is necessary to make sure that the robot is
competition ready
Tips and Tricks
•Make sure that set screws are installed in every axle hub, motor hub, and axle collar.
•Refer to the legend provided in the Kit of Parts, if any parts are unfamiliar.
•Make sure that all assemblies are square. It is hard to drive a crooked robot straight!
•The drive wheels are powered by two DC motors located on the back of the robot, which are relatively
heavy. This weight is needed to help the wheels grip the surface better.
•Omni wheels should be located on the front of the robot, which allows the robot to turn more easily.
The omni wheels can slide sideways with very little friction due to the rollers.
•Unless otherwise noted, the top image in each step shows the necessary parts; the lower image shows
the completed assembly.

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Armature
Tower Base
Step 1: Prepare Upper Brackets (Make 4)
Figure 1- Unassembled View Figure 2- Assembled View of One
Figure 3- Assembled View of All Four
Parts Needed:
REV-41-1480 - metal 90 degree bracket (1 x 4)
REV-41-1359 - M3 x 8mm screw (4 x 4)
REV-41-1361 - M3 nyloc nuts (4 x 4)

8 | FIRST®Tech Challenge Basic ‘Bot Guide for REV- Part 2
Revision 1: 10/29/2020
Step 2: Add Upper Brackets to Beams (Make 2)
Figure 4- Unassembled View
Figure 5- Assembled View
Parts Needed:
REV-41-1430 - Extrusion, 150mm - 45 degree ends (4)
Assemblies from previous step

FIRST®Tech Challenge Basic ‘Bot Guide for REV-Part 2 | 9
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Step 3: Prepare Cross Brace Support Brackets (Make 4)
Figure 6- Unassembled View Figure 7- Assembled View of One
Figure 8- Assembled View of All Four
Parts Needed:
REV-41-1320 - plastic inside corner bracket (1 x 4)
REV-41-1359 - M3 x 8mm screw (4 x 4)
REV-41-1361 - M3 nyloc nuts (4 x 4)

10 | FIRST®Tech Challenge Basic ‘Bot Guide for REV- Part 2
Revision 1: 10/29/2020
Step 4: Add Brackets to Cross Brace
Figure 9- Unassembled View
Figure 10- Assembled view
Parts Needed:
REV-41-1431 - Extrusion, 225mm - 90 degree ends (2)
Assemblies from the previous step

FIRST®Tech Challenge Basic ‘Bot Guide for REV-Part 2 | 11
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Step 5: Add Screws to Cross Brace
Figure 11- Unassembled View
Figure 12- Assembled View
Parts Needed:
REV-41-1359 - M3 x 8mm screw (16)
Assemblies from the previous step

12 | FIRST®Tech Challenge Basic ‘Bot Guide for REV- Part 2
Revision 1: 10/29/2020
Step 6: Add Cross Braces to Beams
Figure 13- Unassembled View
Figure 14- Assembled view
Parts Needed:
Assemblies from previous steps
Helpful Hint
•Upper cross brace touches metal bracket of support arm.
•Lower cross brace touches upper cross brace.

FIRST®Tech Challenge Basic ‘Bot Guide for REV-Part 2 | 13
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Step 7: Prepare Tower/Chassis Brackets (Make 6)
Figure 15- Unassembled View Figure 16- Assembled View of One
Figure 17- Assembled View of All Six
Parts Needed:
REV-41-1307 - plastic 45 degree bracket (1 x 6)
REV-41-1359 - M3 x 8mm screw (5 x 6)
REV-41-1361 - M3 nyloc nuts (5 x 6)

14 | FIRST®Tech Challenge Basic ‘Bot Guide for REV- Part 2
Revision 1: 10/29/2020
Step 8: Add Tower/Chassis Brackets to Tower Base
Figure 18- Unassembled View
Figure 19- Assembled View
Parts Needed:
Assemblies from previous steps

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Step 9: Add Tower Base to Chassis
Figure 20- Temporarily Remove Omni Wheels Figure 21- Add Tower Base Assembly
Figure 22- Assembled View
Parts Needed:
Chassis
Tower Base - assembly from the previous step
Helpful Hint
•Tower brackets should be against rear wheel brackets.

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Tower Gear Assembly
Step 1: Prepare Brackets (Make 8)
Figure 23- Unassembled View
Figure 24- Assembled View
Parts Needed:
REV-41-1321 - plastic lap corner bracket (1 x 8)
REV-41-1359 - M3 x 8mm screw (1 x 8)
REV-41-1361 - M3 nyloc nuts (1 x 8)

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Step 2: Add Brackets to Beam (Make 2)
Figure 25- Unassembled View
Figure 26- Assembled View
Parts Needed:
REV-41-1431 - Extrusion, 225mm - 90 degree ends (1 x 2)
Assemblies from previous step
Helpful Hint
•Lower brackets (brackets on right in image) are 20mm from the right end of
the extrusion.
•Upper brackets (brackets on left in image) are 90mm from the right end of
the extrusion.

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Step 3: Add Beams to Base
Figure 27- Unassembled View
Figure 28- Assembled View
Parts Needed:
Assemblies from previous steps
Robot (chassis plus new assemblies)
Helpful Hint
•There should be 40mm between the right beam and the inside of the
tower base (yellow arrow).
•There should be 60mm between beams (red arrow).

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Step 4: Assemble Gear Motor
Figure 29- Unassembled View
Figure 30- Assembled View
Parts Needed:
REV-41-1291 HD hex motor (1)
REV-41-1607 UltraPlanetary Mounting Plate (1)
M3 x 8mm button head screws (supplied with motor) (2)

20 | FIRST®Tech Challenge Basic ‘Bot Guide for REV- Part 2
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Step 5: Assemble Motor Gears
Figure 31- Unassembled View
Figure 32- Assembled View
Parts Needed:
Assembly from previous step
REV-41-1601 - UltraPlanetary Cartridge 3:1 (1)
REV-41-1602 - UltraPlanetary Cartridge 4:1 (1)
REV-41-1603 - UltraPlanetary Cartridge 5:1 (1)
REV-41-1604 - UltraPlanetary Output Stage (1)
M3 x 40mm screw (supplied in kit) (6)
Helpful Hint
•Note the order of gear ratio sets on motor.
•The highest ratio (5:1) is closest to the motor as
recommended by REV.