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VEX Robotics Design System Sensors A Brief Overview. VexLabs’ Sensor Robot. Off the Shelf Sensors. Bump Sensors bumper switches limit switches Ultrasonic Range Finder Line Tracking Kit Optical Shaft encoders * Light Sensors * We’d have to get these (we don’t have any). Touch Sensors.

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VEX Robotics Design System Sensors A Brief Overview


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Presentation Transcript
off the shelf sensors
Off the Shelf Sensors
  • Bump Sensors
    • bumper switches
    • limit switches
  • Ultrasonic Range Finder
  • Line Tracking Kit
  • Optical Shaft encoders
  • * Light Sensors

* We’d have to get these (we don’t have any)

touch sensors
Touch Sensors
  • Bumper Switches
    • designed to run into walls…
  • Limit Switches
    • designed to detect mechanical arms…
ultrasonic range finder
Ultrasonic Range Finder
  • Detects the time it takes sound waves to return
  • Used to measure distances from 3 cm to 3 m
line tracking kit
Line Tracking Kit
  • Detects reflected infra red light
  • Used to follow lines
optical shaft encoders
Optical Shaft Encoders
  • Detects 90 ticks per shaft rotation
  • Useful for measuring speeds

*Old encoders (they only have one PWM cable) can’t tell direction of rotation

*

potentiometers variable resistors
Potentiometers(Variable Resistors)
  • Resistance depends on shaft rotation
  • Useful to accurately measure angles
  • Limited range of rotation
light sensors
Light Sensors
  • I haven’t got a chance to play with these yet.