todd rathier – mentor leominster high school devil dawgs robotics
TRANSCRIPT
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Starting a VEX team
Todd Rathier – MentorLeominster High School Devil Dawgs
Robotics
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Credits:
Adapted from Carnegie Mellon’s Robotics Academy
Pictures and prices from VexRobotics.com
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Step by Step – Step 1oWhy become involved with VEX?
• Reinforce or teach math concepts• Engineering concepts• Programming• Teamwork• Problem solving• Competition
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What is Vex?
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Structural
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Motion
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Motion - Pneumatic
Sing
leD
oubl
e
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Sensors
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Power
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Logic
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Control – Accessories 75mhz
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Control – Accessories VEXnet
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Software
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Equipment
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Step 2A - HardwareoWhat do I start with?
• Autonomous versus Driver Control• Types of controllers
Signal Splitter – no controller requiredPIC Controller – older versionCORTEX Controller – brand new
• Types of controls75 MHz Transmitter & ReceiverVEXnet Joystick – brand new
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Signal Splittero No programmingo Takes 7.2V VEX batterieso Runs up to 6 PWM devices
o Motorso Servos
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Protobot Robotic Kit = $199.99
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PIC Controller• Wireless with the 75MHz receiver and
transmitter • Microchip user processor • (8) Motor ports • (16) Digital I/O, Analog In • (6) Interrupt I/O • (1) Serial Port • Programmable
• easyC• ROBOTC or MPLAB
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Starter PIC Bundleso Radio Control Starter Bundle - $299.99
• Driver mode only – no PIC controller• Includes 75 MHz Transmitter & Receiver
o Autonomous Control Starter Bundle - $319.99• Autonomous mode only – PIC controller• No 75 MHz Transmitter & Receiver
o Dual Control Starter Bundle - $419.99• Autonomous and driver mode• 75 MHz Transmitter & Receiver included• PIC controller included
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• (1) Protobot Robot Kit (1) PIC Microcontroller V0.5 • (1) Transmitter & Receiver (1) Servo • (1) Bumper Switch Kit (1) Limit Switch Kit • (1) Advanced Gear Kit (1) Tank Tread Kit • (1) Sprocket & Chain Kit (1) 3-wire Cable Bundle • (1) Inventor's Guide • (1) Booster Kit w/ Additional Metal, Gears & Hardware • (1) 7.2v Robot Battery and Charger • (1) 9.6v Transmitter Battery and Charger • (1) Autodesk VEX Curriculum
• (1) Full License of Autodesk Inventor (4 – pack or 8 pack)• (1) Crystal Set A* (4 pack only)• (1) Crystal Set B* (8 pack only)
Classroom LAB PIC Bundles
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Classroom LAB PIC Bundleso Base Kit - $699.99
• 4 pack - $2999 or $749.75 each• Includes one seat of Inventor• Includes Crystal Set A
• 8 pack - $5799 or $724.88 each• Includes one seat of Inventor• Includes Crystal Set B
o Add Programming• EasyC - 1 seat - $74.99 10 seats - $250.00• RobotC - 1 seat - $74.99 12 seats - $500.00
o Programming Bundle – only 1 required• Cable and adapters - $49.99
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(1) Metal & Hardware Kit (1) Tank Tread Upgrade Kit (1) High Strength Sprocket & Chain Kit (1) High Strength Gear Kit (2) 4" Omni-Directional Wheel (2) Linear Slide (1) 3-Wire Motor (2) Rack Gear Brackets (1) Latex Tubing (20) Rubber Band (4) Rubber Links (2) Hinges
Competition Upgrade Kit $269.99
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CORTEX Controller• STMicroelectronics ARM Cortex-M3 user processor • Wireless with built-in VEXnet technology • (8) Standard 3-wire Motor ports • (8) Hi-res (12-bit) Analog Inputs • (2) 2-wire Motor ports • (1) I2C "smart sensor" port • (2) UART Serial Ports • (12) Fast digital I/O ports• Programmable
• easyC v4 for Cortex• ROBOTC for Cortex & PIC
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(1) Protobot Robot Kit (1) Cortex Microcontroller (1) VEXnet Joystick (1) Servo (1) Bumper Switch Kit (1) Limit Switch Kit (1) Advanced Gear Kit (1) Tank Tread Kit (1) Sprocket & Chain Kit (1) 3-wire Cable Bundle (1) Inventor's Guide (1) Booster Kit w/ Additional Metal, Gears & Hardware (2) VEXnet USB Adapter Key (1) VEXnet Backup Battery Holder (1) USB A-A Tether Cable (1) 7.2V NiMH Robot Battery (1) Smart Charger w/ North American Power Cord (1) 8-Bay AA/AAA Smart Battery Charger (1) AAA NiMH Rechargeable Battery 6-pack
(1) Autodesk VEX Curriculum (1) Full License of Autodesk Inventor (CAD) *
Classroom LAB Cortex Bundles
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Classroom LAB Cortex Bundleso Base Kit - $849.99
• 4 pack - $3599 or $899.75 each• Includes one seat of Inventor
• 8 pack - $6999 or $874.88 each• Includes one seat of Inventor
o Add Programming• EasyC - 1 seat - $74.99 10 seats - $250.00• RobotC - 1 seat - $74.99 12 seats - $500.00
o Programming Bundle – only 1 required• Cable and adapters - $49.99
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VEX Classroom Competition School Bundle
"What should I buy?
Why doesn't someone have an 'all-in-one' bundle that contains everything I need?"
This is the perfect bundle for those people. Everything you need to drop a turn-key STEM program into your class in one easy step.
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For $4999.00 this kit includes:• (5) Classroom Competition Team Kits • (1) VEX Classroom Competition Field
"Buy 5 kits, and we'll throw in the field for free."
• (1) Crystal Upgrade Kit
Everything you need to build five robots, and everything you need to play Swept Away.
Also includes special VEX for each of your five teams!
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Classroom Competition Bundles $999
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Step 2B - SoftwareoEasyC
Pros:• Many teams use it• Easy to learn, icon based• Supported by Vex Curriculum
Cons:• Difficult to debug• Complicated behaviors may be difficult
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Step 2B – Software (cont’d)oRobotC
Pros:• Good for high school or college students• C-based programming language• Windows based environment• Supported by Robotics Academy online site
Cons:• C-based language is more difficult to learn
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Step 3 – Research Resources
ohttp://www.education.rec.ri.cmu.edu
Contains the full VEX curriculum onlineAlso contains lesson plans
ohttp://www.vexrobotics.com/ohttp://robotevents.com/ohttp://hobbyvex.orgohttp://www.vexfan.comohttp://robomatter.com
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Step 4 – TeamsoDecide on size and number of teams
• All work should be done in groups of 2 or 4
• Odd numbers can lead to feeling “left out”
• Groups bigger than 4 have nothing to do
• Classrooms generally work best with 2 to a robot
• First time coaches do well with 8 on a team
• Recruit additional mentors for larger groups
• Establish a handbook and student committee
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Step 4 – Teams (cont’d)oDefine Roles• Engineer (Builder)• Software Specialist (Programmer)• Information Specialist (Info finder / Researcher)• Project Manager (Whip-cracker)
o To build leadership and management skills• Rotate students through roles• Assign students to all roles• Hold students accountable for team responsibilities• Unisex teams – boys are autocratic
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Step 5 – LogisticsoRobotso ComputersoRoom Size oPractice AreaoParts StorageoNetworkoProjector
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Step 5 – Logistics (cont’d)oRobotso Robotics Academy recommends 1 robot for
every 2 students. We use 1 to 4.o Computers
o Preferably 1 to a team. Teams will go through many design cycles during software programming especially during tweak time.
oRoom Size o Never enough spaceo Must have build room, programming room,
storage space and drive space
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Step 5 – Logistics (cont’d)oPractice Spaceo Standard playing field is 12 x 12 feeto Can make do with less
o Parts Storageo Static storage for parts and materialso Mobile storage for competition
oNetworko Software loaded and availableo Backup of programs is key
o Flash drives – multipleo Network backup
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Step 5 – Logistics (cont’d)oProjectoro Review programmingo Build instructionso Review game videos
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Step 6 – BudgetoPlan for expenseso Robots
o Software and Programming Hardwareo Curriculumo Materials and Toolso Parts Storageo Competition Feeso Team uniforms (optional)o Team building activities
o Rock Climbingo Laser Tag
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Step 6 – Budget (cont’d)oIncome?o Fundraisers
o School Districto Local Businesseso Local Non-Profit Organizationso Grants
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Step 7 – ConnectoConnect with other mentors/teacherso Visit robotic eventso Contact a local established team and see how
they do thingso Numerous forums and blogso Always include a few key students