Evangelos Oulis
5 years ago
2 changed files with 2 additions and 80 deletions
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/*
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Stepper Motor Demonstration 1 |
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Stepper-Demo1.ino |
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Demonstrates 28BYJ-48 Unipolar Stepper with ULN2003 Driver |
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Uses Arduino Stepper Library |
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DroneBot Workshop 2018 |
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https://dronebotworkshop.com
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*/ |
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//Include the Arduino Stepper Library
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#include <Stepper.h> |
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// Define Constants
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// Number of steps per internal motor revolution
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const float STEPS_PER_REV = 32; |
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// Amount of Gear Reduction
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const float GEAR_RED = 64; |
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// Number of steps per geared output rotation
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const float STEPS_PER_OUT_REV = STEPS_PER_REV * GEAR_RED; |
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// Define Variables
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// Number of Steps Required
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const int stepper_motor_speed = 600; |
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int pos = 1; |
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const int StepsRequired = STEPS_PER_OUT_REV / 4; |
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// Create Instance of Stepper Class
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// Specify Pins used for motor coils
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// The pins used are 8,9,10,11
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// Connected to ULN2003 Motor Driver In1, In2, In3, In4
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// Pins entered in sequence 1-3-2-4 for proper step sequencing
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Stepper steppermotor(STEPS_PER_REV, 6, 8, 12, 13); |
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void setup() |
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{ |
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// Nothing (Stepper Library sets pins as outputs)
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} |
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void next_step() |
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{ |
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if(pos == 1) |
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{ |
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steppermotor.setSpeed(stepper_motor_speed); |
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steppermotor.step(StepsRequired); |
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pos = 2; |
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} |
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else if(pos ==2) |
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{ |
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steppermotor.setSpeed(stepper_motor_speed); |
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steppermotor.step(-1*StepsRequired); |
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pos = 3; |
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} |
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else if(pos == 3) |
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{ |
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steppermotor.setSpeed(stepper_motor_speed); |
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steppermotor.step(-1*StepsRequired); |
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pos = 4; |
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} |
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else if(pos == 4) |
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{ |
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steppermotor.setSpeed(stepper_motor_speed); |
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steppermotor.step(StepsRequired); |
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pos = 1; |
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} |
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} |
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void loop() |
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{ |
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next_step(); |
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delay(1000); |
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} |
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