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Topic: Project 10 - Zoetrope , The motor spin in only one direction (Read 1 time) previous topic - next topic

Hi at all, I got a little problem in the project 10, the enable button works, the potentiometer too but there is a problem with the direction... the spin only in one direction, in the other it stops. That's the code:
Code: [Select]

const int controlPin1=2;
const int controlPin2 = 3;
const int enablePin = 9;
const int directionSwitchPin = 4;
const int onOffSwitchStatePin = 5;
const int potPin = A0;

int onOffSwitchState=0;
int previousOnOffSwitchState=0;
int directionSwitchState = 0;
int previousDirectionSwitchState = 0;

int motorEnabled = 0;
int motorSpeed = 0;
int motorDirection = 1;

void setup()
  digitalWrite(enablePin, LOW);

void loop()
  onOffSwitchState = digitalRead(onOffSwitchStatePin);
  motorSpeed = analogRead(potPin)/4;
  if(onOffSwitchState != previousOnOffSwitchState)
    if(onOffSwitchState == HIGH)
      motorEnabled = !motorEnabled;
  if(directionSwitchState != previousDirectionSwitchState)
    if(directionSwitchState == HIGH)
      motorDirection = !motorDirection;
  if(motorDirection == 0)
    digitalWrite(controlPin1, HIGH);
    digitalWrite(controlPin2, LOW);
    Serial.println("Direction 1 (The motor turn)");
    digitalWrite(controlPin1, LOW);
    digitalWrite(controlPin2, HIGH);
    Serial.println("Direction 2(The motor doesn't turn)");
  if(motorEnabled == HIGH)
    analogWrite(enablePin, motorSpeed);
    analogWrite(enablePin , 0);
  previousDirectionSwitchState = directionSwitchState;

Arduino switch correctly between the and and else of the direction because on the serial monitor I see both the message(direction 1 and direction 2) but in the direction 2 the motor doesn't turn. I tried to reverse HIGH and LOW and I realized that the motor  never turn when the controlPin1 is LOW and the controlPin2 is HIGH. Where is the problem?

In the attached I there are the photo of the breadboard. Thank you in advance and sorry for bad language, I''m not english :D

I have the exact same problem.  Anyone, please help.


from my understanding, the buttons work as described and you can see that on the monitor. I would suspect there could be a wiring problem on your circuit. I hooked up the project last night and all works fine without any problem. however, I didn't have time to reproduce your problem... still think it could be a wiring issue. try rewiring the project.  8)

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