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Dc motor problem

e14 Contributor

Hi all just started with programming an Arduino UNO - I have no previous programming background!!

 

I started with Evil Genius book and I want to make a table feed for my milling machine, but right now im just experimenting with dc motor control.

 

What I have set up is a H Bridge (HMD-02)  2 buttons and 2 potentiometers and 1 dc motor

What i want it to do is 1 Nothing until I press 1 button then Turn forward at speed set by pot 1  , stop when i let go of button and turn backward at speed set by pot 2 when I press button 2???

 

MY sketch starts the motor running as soon as I compile and I cant find the problem??????

 

Please any help??

Many thanks.

Attachments:
dc_motor1.ino.zip
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  • 0 in reply to e14 Contributor

    Hi I tried to attach it as a file!! Copy and paste did not work!

    What is the best way??

     

    Gerhard

  • 0 in reply to e14 Contributor

    /*

    * dc moto with h-bridge and 2 potentiometers and 2 buttons

    * 1 button for forward at speed set by pot 1

    * 2 button for bacward at speed set by pot 2

    */



    int pot1 = 0;          // potentiometer to pin A0

    int pot2 = 1;          // potentiometer to pin A1

    int enable = 11;       // to enable on h bridge

    int motorPin1 = 9;     // to In1 on h bridge

    int motorPin2 = 10;    // to In2 on h bride

    int redBut = 12;       // button to 12 pull-down

    int greenBut =13;      // button to 13 pull-down





    void setup()                    // run once, when the sketch starts

    {

      Serial.begin(9600);           // set up Serial library at 9600 bps

      pinMode(pot1, INPUT);       

      pinMode(pot2,INPUT);

      pinMode(enable, OUTPUT);

      pinMode(motorPin1, OUTPUT);

      pinMode(motorPin2, OUTPUT);

      pinMode(greenBut , INPUT);

      pinMode(redBut , INPUT);

      digitalWrite (motorPin1 , LOW);

      digitalWrite (motorPin2 ,LOW);

      digitalWrite(enable ,LOW);

    }



    int getPot1() {

      int v;

      v = analogRead(pot1);

      v /= 4;

      v = max(v, 90);

      v = min(v, 255);

      return v;

    }





    int getPot2() {

      int w;

      w = analogRead(pot2);

      w /= 4;

      w = max(w, 90);

      w = min(w, 255);

      return w;

    }



    int motorFoward() {

      analogWrite(motorPin1, getPot1());

    digitalWrite(enable,HIGH);

    digitalWrite(motorPin2,LOW);

    }



    int motorBackward() {

      analogWrite(motorPin2, getPot2());

      digitalWrite(enable,HIGH);

      digitalWrite(motorPin1,LOW);

    }



    int allStop(){

      digitalWrite (motorPin1 , LOW);

      digitalWrite(motorPin2 , LOW);

      digitalWrite(enable ,LOW);

    }





    void loop()                     // run over and over again

    {

      if (greenBut = HIGH){

      motorFoward();}


      else if (redBut = HIGH){

      motorBackward();}


      else{

      allStop();}

    }





  • 0 in reply to e14 Contributor

    Don't have time to look through it at the moment, but to post it just add <code>....</code> within the html editor.

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