L.C. Technology Servo Motor Control / Genie Software

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Presentation transcript:

L.C. Technology Servo Motor Control / Genie Software Professional Development for Teachers

Introduction to the Servo Servo offers smoothest control Rotate to a specific point Offer good torque and control Ideal for powering robot arms etc. However: Degree of revolution is limited Not suitable for applications which require continuous rotation

Servo Motors Contain motor, gearbox, driver controller and potentiometer Three wires - 0v, 5v and PIC signal Potentiometer connected to gearbox - monitors movement Provides feedback If position is distorted - automatic correction

Servo Motor Operation Servo Motor selected from list On programming block, pulse width and output pin must be set. Option for speed control in seconds Pulse width can also be expressed as a variable

Pulse Width Pulse Width Modulation (0.75ms to 2.25ms) Pulse Width takes servo from 0° to 150° rotation Continuous stream every 20ms

Genie E18 Motorboard Servo Outputs Motor board offers three servo outputs Outputs must be linked directly to PIC and not from transistor chip Designated outputs – Q0, Q1, Q2

Genie E18 Motorboard Analogue Inputs Inputs that have varying resistance Three designated analogue inputs- A0, A1, A2 Genie uses the variance and assigns values from 0-255