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Automated Mechanisms Help

Automated Mechanisms Help. Potentiometers. Potentiometer Check Analog Port 2 How they work Analog sensor Measures rotation of a shaft between 0 and ~265 degrees Cortex returns values 0 - ~4095 Look in the natural Language Library to see how to write code

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Automated Mechanisms Help

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  1. Automated Mechanisms Help

  2. Potentiometers • Potentiometer Check • Analog Port 2 • How they work • Analog sensor • Measures rotation of a shaft between 0 and ~265 degrees • Cortex returns values 0 - ~4095 • Look in the natural Language Library to see how to write code for use [ slides 40 & 45 until commands]

  3. Potentiometers • Other Properties • Internal mechanical stops prevent the potentiometer from turning a full revolution. • Limitations • Caution:Excess torque against the internal mechanical stops (can be caused by hand or by a VEX motor) will cause them to wear away. The potentiometer will continue to function, but will have a “dead zone” where the mechanical stops were, where no new values are sent. • Switching the direction the potentiometer is facing will also switch the direction it “counts”. For example: counter-clockwise turns will count 0 to 4095 on one side; on the other counter-clockwise turns will count 4095 – 0.

  4. Potentiometers • View the debugger window (under robot) and notice the value change as you turn the potentiometer.

  5. Using the ROBOTC Natural Language Library • The Natural Language is an additional Platform Type in ROBOTC:

  6. ROBOT Motion • Commands that cause the entire robot to perform a behavior

  7. Setup • Allows you to specify what type of robot configuration you have from pre-specified models (RECBOT, Swervebot)

  8. Movement • Commands that allow you to control individual motors

  9. Special • Commands that control the more unique VEX Hardware – LED’s

  10. Until • Commands that allow you to create behaviors where the robot acts “until” a certain event • Button Press • Line Tracker Value • Potentiometer Value

  11. Wait • Commands that wait for an elapsed amount of time in seconds or milliseconds

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