After 4 hard weeks of trial and error I have managed to make a setup where a small model railway turntable (home made by 3d printing) can be stopped for an amount of time when a magnet is near a Hall sensor.
However, this means attaching a laptop to load the sketch, which, of course, dies when the laptop and 5V power is removed . Is there any way I can permanently save the software so I can start the turntable by a toggle switch when it will be needed rather than having the laptop attached every time.
Here's the code, don't laugh, it works exactly as I want it to.
#define STEPPER_PIN_1 8
#define STEPPER_PIN_2 9
#define STEPPER_PIN_3 10
#define STEPPER_PIN_4 11
int step_number = 0;
int LED = 13 ; // LED
int digitalPin = 2; // Hall magnetic sensor input 1 (high) or 0 (low)
int analogPin = A0; // analog Pin also available, but not necessary
int digitalInputValue ; // digital readings
int analogInputValue; // analog readings
void setup()
{
pinMode (LED, OUTPUT);
pinMode (digitalPin, INPUT);
pinMode(analogPin, INPUT); //not necessary, but it is interesting to see the analog values
Serial.begin(9600);
pinMode(STEPPER_PIN_1, OUTPUT);
pinMode(STEPPER_PIN_2, OUTPUT);
pinMode(STEPPER_PIN_3, OUTPUT);
pinMode(STEPPER_PIN_4, OUTPUT);
}
void loop () {
OneStep(false);
delay(20);
digitalInputValue = digitalRead(digitalPin) ;
if (digitalInputValue == HIGH) // When magnet is present, digitalInputValue gets 1 (HIGH) and turns LED on
{
digitalWrite (LED, HIGH);
}
else
{
digitalWrite (LED, LOW);
}
{
if (digitalInputValue ==HIGH)
delay(10000);
}
//Here you can see the analog values of the sensor
analogInputValue = analogRead(analogPin);
Serial.println(analogInputValue); // print analog value
delay(4);
}
void OneStep(bool dir) {
if (dir) {
switch (step_number) {
case 0:
digitalWrite(STEPPER_PIN_1, HIGH);
digitalWrite(STEPPER_PIN_2, LOW);
digitalWrite(STEPPER_PIN_3, LOW);
digitalWrite(STEPPER_PIN_4, LOW);
break;
case 1:
digitalWrite(STEPPER_PIN_1, LOW);
digitalWrite(STEPPER_PIN_2, HIGH);
digitalWrite(STEPPER_PIN_3, LOW);
digitalWrite(STEPPER_PIN_4, LOW);
break;
case 2:
digitalWrite(STEPPER_PIN_1, LOW);
digitalWrite(STEPPER_PIN_2, LOW);
digitalWrite(STEPPER_PIN_3, HIGH);
digitalWrite(STEPPER_PIN_4, LOW);
break;
case 3:
digitalWrite(STEPPER_PIN_1, LOW);
digitalWrite(STEPPER_PIN_2, LOW);
digitalWrite(STEPPER_PIN_3, LOW);
digitalWrite(STEPPER_PIN_4, HIGH);
break;
}
} else {
switch (step_number) {
case 0:
digitalWrite(STEPPER_PIN_1, LOW);
digitalWrite(STEPPER_PIN_2, LOW);
digitalWrite(STEPPER_PIN_3, LOW);
digitalWrite(STEPPER_PIN_4, HIGH);
break;
case 1:
digitalWrite(STEPPER_PIN_1, LOW);
digitalWrite(STEPPER_PIN_2, LOW);
digitalWrite(STEPPER_PIN_3, HIGH);
digitalWrite(STEPPER_PIN_4, LOW);
break;
case 2:
digitalWrite(STEPPER_PIN_1, LOW);
digitalWrite(STEPPER_PIN_2, HIGH);
digitalWrite(STEPPER_PIN_3, LOW);
digitalWrite(STEPPER_PIN_4, LOW);
break;
case 3:
digitalWrite(STEPPER_PIN_1, HIGH);
digitalWrite(STEPPER_PIN_2, LOW);
digitalWrite(STEPPER_PIN_3, LOW);
digitalWrite(STEPPER_PIN_4, LOW);
}
}
step_number++;
if (step_number > 3) {
step_number = 0;
}
}
Thanks in advance for your help, BUT remember I'm an ancient biochemist not a computer geek.
