Tommy Ogura INTRODUCTION Topic Basic parts of VEX

Tommy Ogura INTRODUCTION

Topic � Basic parts of VEX

Microcontrollers Brain of the robot � Input � � Digital Sensors ○ Bumper ○ Limit � Analog Sensors ○ Light � Output � Motor

Motors � Servos � Rotates 180 degrees � Precise programming � Used for camera, ultrasonic sensor rotation � Motor / Continuous Servos � Rotates in a certain direction and speed � Connects to a shaft

Sensors � � � Bumper Limit Switch Infrared � Detects reflection of infrared light � Light Sensor � Detects ambient light � Ultrasonic � Detects reflection of ultrasonic pulse � Distance detection � Shaft Encoder � Can calculate distance robot travels � Potentiometer � Detects angle and rotation of shaft � Used to detect angle of arms

Sensor Application: Bumper

Sensor Application: Limit

Sensor Application: Infrared

Sensor Application: Ultrasonic

Sensor Application: Shaft Encoder

Sensor Application: Potentiometer

Gears � Transfer motion �Direction �Speed �Force (Torque)

Different Gears � Rack Gear � Converts to linear motion � Worm gear & wheel � One-direction � Offset 90 degrees � Differential � Allows different gear speed on same power source � Bevel � Allows 90 degrees transfer

Tank Treads � Allow conveyor belt � Better for rough grounds � Also used to pick items

Sprockets & Chains � Transfer motion across distance � Compatible with Tread Kit

Wheels � Movement �Also to pick up items � Different size and friction �Leads to different acceleration, max. speed, etc.

Structure � Bar � Plate � Chassis � C-Channel

Other: � Shaft �Shaft Collar � Bearing Flat � Screws, nuts, standoff.

Competition Kit ($999) - Competition Team Kit - Metal - Adv. Tank - Strong Spro. - Strong Gear - 2 Omni wheel - Motor Classroom Kit ($699) Adv. Gear Tank Tread Starter Kit ($419) Sprocket Servo Game tools Booster Kit Batteries Microcontroller Limit & Bumper Switch Protobot Kit

Other Items � Sensor Kit (99. 99) �Line Track (39. 99) �Ultrasonic (29. 99) �Light Sensor (19. 99) � 2 Optical Shaft Encoders (19. 99) � 2 Potentiometers (12. 99) � Programming Hardware Kit (49. 99)

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