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Vex Robotics Pro VersaChassis Mini User Manual

Vex Robotics Pro VersaChassis Mini User Manual

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217-6327-751
VersaChassis Mini User Guide
VersaChassis Mini
User Guide
vexpro.com
Copyright 2018, VEX Robotics Inc.
1
2018-08-16

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Summary of Contents for Vex Robotics Pro VersaChassis Mini

  • Page 1 217-6327-751 VersaChassis Mini User Guide VersaChassis Mini User Guide vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 2: Table Of Contents

    VersaChassis Mini User Guide Table of Contents VersaChassis Mini Introduction ................................3 Power-to-Weight Ratio (PWR) ................................4 Configurations ....................................... 5 Motor Compatibility ....................................18 Maintenance....................................... 19 VersaChassis Mini FAQ ..................................21 Support ......................................... 22 vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 3: Versachassis Mini Introduction

    Weight is an important factor in the design of the VersaChassis Mini system. However, lightweight does not mean low strength. Many of the components used in the VersaChassis Mini system have been battle tested by FIRST® Robotics Competition, FIRST® Tech Challenge and VEX Robotics Competition teams for years. VersaFrame The use of 1”...
  • Page 4: Power-To-Weight Ratio (Pwr)

    VEXpro wheels on your VersaChassis can be found in the VersaChassis Mini Tips & Tricks Guide. Star Drive Screws Stripped screws are a fact of life in competition robotics. Many VEX Robotics Competition (VRC) teams use Star Drive Screws to combat this issue. These screws have many advantages over tradition Hex Drive Screws.
  • Page 5: Configurations

    Teams should consider the pros and cons of each drivetrain and how they factor into their robot’s strategy. These configurations are meant to give teams a starting point that allows vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 6 4 Wheel Drive Out of the box, the VersaChassis Mini can be used to make 4 different types of 4-wheel drivetrains: vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 7 • High traction to push robots or climb over obstacles • Cheapest option for a drivetrain Cons: • Less agile than other types of drivetrains • Higher current draw when turning compared to other drivetrains vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 8 • Balance of traction and agility • Harder to ‘T-Bone’ than 4 Traction Wheels Cons: • Less traction for pushing robots or climbing obstacles • Easier to push at the end of the robot with omni-directional wheels vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 9 ‘T-bone’. Pros: • Very agile • Hard to ‘T-bone’, pin or entrap Cons: • Less traction for pushing robots or climbing obstacles • Can easily be pushed side to side vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 10 • Not as easy to push sideways as a 4 Omni-Directional Wheel drivetrain Cons: • Requires at least 4 motors to implement correctly • Requires additional software to keep tract of positioning during autonomous mode vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 11 217-6327-751 VersaChassis Mini User Guide 6 Wheel Drive A 6 Wheel Drive Upgrade Kit is available for the VersaChassis Mini. This kit allows teams to make 3 different types of 6-wheel drivetrains. vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 12 However, if your wheel width is too small it can make your robot too difficult to control. Since the wheel base on the VersaChassis Mini is smaller, there’s no need to drop the center wheel (like you would on a larger FRC robot). vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 13 • Harder to get high centered on field obstacles • Added stability Cons: • Less agile that other types of drivetrains • Heaviest 6-wheel drivetrain • Requires the use of roller chain to power some wheels vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 14 • More agile than 6 traction wheel option • Harder to get high centered on field obstacles • Added stability Cons: • Less agile that other types of drivetrains • Heavier than a 4-wheel drivetrain vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 15 • Most agile 6-wheel drive configuration • Harder to get high centered on field obstacles • Added stability Cons: • Easier to push from the side, especially at the front and back of the robot vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 16 5 wheel perpendicular to the other 4. This 5 wheel can propel the robot left and right. In addition, the all 5 wheels be used to propel the robot diagonally. vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 17 Cons: • Less traction than a Mecanum Drive • Less power in your drivetrain, but more power available for other systems • Requires more complicated software than most other 4 and 6-wheel drivetrains vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 18: Motor Compatibility

    “Preparing FTC Motors for the VersaPlanetary” guide. Picture Motor Compatible AndyMark NeveRest REV Core Hex Motor REV Hex Motor Tetrix 12V Motor Tetrix TorqueNADO Motor vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 19: Maintenance

    If they are, replace immediately. A $0.10 screw isn’t worth the headache of dealing with that stripped screw at a competition. During an Event Check set screws on the VersaPlanetary output shafts vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 20 Loose or improper wiring can rob your robot of power. This means that motors might not be running at their full potential and your sensors could be providing incorrect data. Check for cuts along a wire, loose connections, and potential shorts. vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...
  • Page 21: Versachassis Mini Faq

    Any 1” x 1” tubing will work. In addition to the 1” x 1” x 0.040” wall tubing included with the VersaChassis Mini, VEX Robotics also sells a 1” x 1” x 0.100” wall aluminum tubing and a 1” x 1” x 0.100”...
  • Page 22: Support

    217-6327-751 VersaChassis Mini User Guide Support Please send any questions, comments, or concerns to VEX Robotics: Sales: sales@vex.com Support: prosupport@vex.com Phone: 1-903-453-0802 Fax: 1-214-722-1284 Office Hours: 7am – 5pm CT vexpro.com Copyright 2018, VEX Robotics Inc. 2018-08-16...