Hi,
for a school project i am making a chewing gum dispenser. For this dispenser I am using an Arduino uno R3, a 28BYJ-48 stepper motor and an IR fork light barrier.
The goal of the setup is that a coin rolls through the fork light barrier which in turn triggers te stepper motor to complete a number of steps.
The problem I'm bumping into is that the code i have now only allows the stepper motor to rotate when something stays in between the fork light barrier instead of passing through it.
I was wondering if somebody would be willing to help me adjust my code to solve this problem.
Thank you,
Mitch
/*
BYJ48 Stepper motor code
Connect :
IN1 >> D8
IN2 >> D9
IN3 >> D10
IN4 >> D11
VCC ... 5V Prefer to use external 5V Source
Gnd
written By :Mohannad Rawashdeh
https://www.instructables.com/member/Mohannad+Rawashdeh/
28/9/2013
*/
#define IN1 8
#define IN2 9
#define IN3 10
#define IN4 11
int Steps = 0;
boolean Direction = true;// gre
unsigned long last_time;
unsigned long currentMillis ;
int steps_left=17786;
long time;
int isObstaclePin = 7;
int isObstacle = LOW;
void setup()
{
Serial.begin(115200);
pinMode(isObstaclePin, INPUT);
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(IN3, OUTPUT);
pinMode(IN4, OUTPUT);
// delay(1000);
}
void loop()
{
while(steps_left>0){
currentMillis = micros();
if(currentMillis-last_time>=1000){
stepper(1);
time=time+micros()-last_time;
last_time=micros();
steps_left--;
}
}
Serial.println(time);
Serial.println("Wait...!");
delay(2000);
Direction=!Direction;
steps_left=0;
}
void stepper(int xw){
for (int x=0;x<xw;x++){
switch(Steps){
case 0:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
case 1:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, HIGH);
break;
case 2:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 3:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, HIGH);
digitalWrite(IN4, LOW);
break;
case 4:
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 5:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, HIGH);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 6:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
case 7:
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, HIGH);
break;
default:
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
digitalWrite(IN3, LOW);
digitalWrite(IN4, LOW);
break;
}
SetDirection();
}
}
void SetDirection(){
isObstacle = digitalRead(isObstaclePin);
if (isObstacle == HIGH) {
if(Direction==1){ Steps++;}
if(Direction==0){ Steps--; }
if(Steps>7){Steps=0;}
if(Steps<0){Steps=7; }
}
}