DMX controlled stepper motor via DMX

Projects General Guidance
1

Hi.. im trying and trying and learning and learning..

i want to control my stepper via dmx, and cannot get it to work...

im using an arduino nano with the 485 chip connected the RO to Rx0..

any help???

this is the code:

#include <DMXSerial.h>

#define MAX_ANGLE 360
#define STEPS_FOR360 400

const byte LED13 =   7;
const byte LED02 =   8;

const byte DIP0 = 13;
const byte DIP1 = 14;
const byte DIP2 = 5;
const byte DIP3 = 6;
const byte DIP4 = 7;
const byte DIP5 = 8;
const byte DIP6 = 9;
const byte DIP7 = 10;
const byte DIP8 = 11;
//const byte DIP9 = 12;
int channelNumber = 0;

const byte stepPin = 2;
const byte dirPin =3;
const byte enPin = 4;
int StepperCurrentAngle = 0;
int currentStepsfrom0 = 0;
float seekingAngle;
float stepsForSeekingAngle;

int DMXvalue = 0;

void setup() {

  DMXSerial.init(DMXReceiver);

  DMXSerial.maxChannel(192);

  pinMode(stepPin,OUTPUT);
  pinMode(dirPin,OUTPUT);
  pinMode(enPin,OUTPUT);
  digitalWrite(enPin,HIGH); // to make Stepper motor enable
  pinMode(LED02,OUTPUT);

  pinMode(DIP0,INPUT_PULLUP);
  pinMode(DIP1,INPUT_PULLUP);
  pinMode(DIP2,INPUT_PULLUP);
  pinMode(DIP3,INPUT_PULLUP);
  pinMode(DIP4,INPUT_PULLUP);
  pinMode(DIP5,INPUT_PULLUP);
  pinMode(DIP6,INPUT_PULLUP);
  pinMode(DIP7,INPUT_PULLUP);
  pinMode(DIP8,INPUT_PULLUP);
//  pinMode(DIP9,INPUT_PULLUP);
//  channelNumber = (1 * !digitalRead(DIP0)) + (2 * !digitalRead(DIP1)) + (4 * !digitalRead(DIP2)) + (8 * !digitalRead(DIP3)) + (16 * !digitalRead(DIP4)) + (32 * !digitalRead(DIP5)) + (64 * !digitalRead(DIP6)) + (128 * !digitalRead(DIP7)) + (256 * !digitalRead(DIP8)) + (512 * !digitalRead(DIP9));
  channelNumber = (1 * !digitalRead(DIP0)) + (2 * !digitalRead(DIP1)) + (4 * !digitalRead(DIP2)) + (8 * !digitalRead(DIP3)) + (16 * !digitalRead(DIP4)) + (32 * !digitalRead(DIP5)) + (64 * !digitalRead(DIP6)) + (128 * !digitalRead(DIP7)) + (256 * !digitalRead(DIP8));
}


void loop() {
  // Calculate how long no data backet was received
  unsigned long lastPacket = DMXSerial.noDataSince();

  if (lastPacket < 5000) {
    DMXvalue = DMXSerial.read(channelNumber);
    if(DMXvalue > 125) digitalWrite(LED02,HIGH); else digitalWrite(LED02,LOW); 
    seekingAngle = map(DMXvalue,0,255,0,MAX_ANGLE);
    stepsForSeekingAngle = (float)STEPS_FOR360 * seekingAngle / 360;
    rotate(stepsForSeekingAngle - currentStepsfrom0);
    digitalWrite(LED13,LOW); 
  } else {
    digitalWrite(LED13,HIGH); 
  } // if
}

void rotate(int steps)
{
    if(steps>0)
    {
      digitalWrite(dirPin,LOW);    // clockwise driection
      for(int x = 0; x < steps; x++) {
        digitalWrite(stepPin,HIGH);
        delayMicroseconds(1000);
        digitalWrite(stepPin,LOW);
        delayMicroseconds(1000);
        currentStepsfrom0++;
      }
      delayMicroseconds(10000);
    }
    else
    {  
      digitalWrite(dirPin,HIGH);     //  anticlockwise direction
      for(int x = steps; x < 0 ; x++) {
        digitalWrite(stepPin,HIGH);
        delayMicroseconds(1000);
        digitalWrite(stepPin,LOW);
        delayMicroseconds(1000);
        currentStepsfrom0--;
      }
      delayMicroseconds(10000);
    } 
}
2

did you managed to receive data on this device over DMX?

3

i dont really know.... how can i check this?..

4

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