Add a demo Arduino file
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/**
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* Prototype
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* Arduino Duemilanove
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* L298N shield V03
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*
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* Pin 13 = motor A or coil A +
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* Pin 12 = motor A or coil A –
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* Pin 11 = motor B or coil B +
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* Pin 10 = motor A or coil A enable
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* Pin 9 = motor B or coil B enable
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* Pin 8 = motor B or coil B –
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**/
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#define Apos 13
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#define Aneg 12
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#define Aenable 10
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void setup() {
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pinMode(Apos, OUTPUT);
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pinMode(Aneg, OUTPUT);
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pinMode(Aenable, OUTPUT);
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}
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void loop() {
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clockwise();
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set_speed(50);
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delay(5000);
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brake();
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delay(2000);
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counter_clockwise();
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set_speed(100);
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delay(5000);
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brake();
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delay(2000);
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}
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//input value from 0 to 255
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void set_speed (int val){
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analogWrite(Aenable, val);
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}
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void clockwise(){
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digitalWrite(Apos, HIGH);
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digitalWrite(Aneg, LOW);
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}
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void counter_clockwise(){
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digitalWrite(Apos, LOW);
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digitalWrite(Aneg, HIGH);
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}
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void brake (){
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digitalWrite(Aenable, LOW);
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}
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/**
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* Vex = higher voltage that can power the motor and/or the shield as well as the Arduino if wanted
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* 5V = Must be a clean 5V that can power the Arduino and shield, and if wanted also the motor itself
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* GND = ass always, the ground of everything
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* B- = Connection of the first motor or first winding of the stepper motor
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* B+ = Connection of the first motor or first winding of the stepper motor
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* A- = Connection of the second motor or second winding of the stepper motor
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* A+ = Connection of the second motor or second winding of the stepper motor
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**/
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