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VEX Optical Shaft Encoder

 VEX Optical Shaft Encoder

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  • Optical Shaft Encoder on a Robot

Optical Shaft Encoder (2-pack)

P/N: 276-2156

With the Quadrature Encoder's two output channels you can measure both the position and direction of rotation of a VEX shaft. This will allow you to calculate the speed of the shaft, as well as the distance it has traveled; these are very useful measurements for autonomous programming. A Programming Kit is needed to change the program in the VEX Controller to use the Quadrature Encoder.

  • Measure Angular Travel.
  • Determine Rotational Direction.
  • Calculate Shaft Speed.
  • Calculate Distance Traveled.
  • Increase Navigational Control.
  • More Autonomous Functionality.
$19.99

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Overview

Function: The optical shaft encoder is used to measure both relative position of and rotational distance traveled by a shaft. It works by shining light onto the edge of a disk outfitted with evenly spaced slits around the circumference. As the disk spins, light passes through the slits and is blocked by the opaque spaces between the slits. The encoder then detects how many slits have had light shine through, and in which direction the disk is spinning.

Applications: The optical shaft encoder can be used to track distance traveled, direction of motion, or position of any rotary component, such as a gripper arm.

Technical Specifications

Kit Contents
  • (2)Optical Shaft Quadrature Encoder
Downloads & Docs Documentation
Instruction Sheet - Optical Shaft Encoder
CAD File (STEP)
Compatibility All VEX Microcontrollers.
3-Wire Extension Cables.
Inputs
  • Type:Mechanical rotation
  • Rotation:Continuous
  • Size:Standard VEX 1/8in shaft
Outputs 3-Wire Cable
Connect to two interrupt inputs.
  • Black:ground
  • Red:+5V
  • White:control signal
Function
  • Sensor:Infrared light sensor and infrared LED, Encoder Wheel has 90 slits
  • Cortex Resolution:1 degree
  • PIC Resolution:2 degrees with ROBOTC
  •  4 degrees with easyC and easyC PRO
Weight
  • Optical Shaft Quadrature Encoder0.078 lbs (35.4 grams)
    • Actual weight one one item (no packaging)
 

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