send multiple values over serial from Processing to Arduino

arduino_firmware.cpp

int currentValue = 0;
int values[] = {0,0};

void setup()  {
  Serial.begin(9600);
} 


void loop() {   
  if(Serial.available()){
    int incomingValue = Serial.read();
    
    values[currentValue] = incomingValue;

    currentValue++;
    if(currentValue > 1){
      currentValue = 0;
    }
    
    // after this point values[]
    // has the most recent set of
    // all values sent in from Processing
  } 
} 

processing_sketch.pde

// import the processing serial library
import processing.serial.*;
// and declare an object for our serial port
Serial port;

void setup() {
  // Get the name of the first serial port
  // where we assume the Arduino is connected
  String portName = Serial.list()[0];
  // initialize our serial object with this port
  // and the baud rate of 9600
  port = new Serial(this, portName, 9600);
}

void draw() {      
  int value1 = 123;
  int value2 = 17;
  
  // load up all the values into a byte array
  // then send the full byte array out over serial
  // NOTE: This only works for values from 0-255  
  byte out[] = new byte[2];
  out[0] = byte(value1);
  out[1] = byte(value2);
  port.write(out);
}

Hey, I actually have used servo motors. Sorry I can't comment anything about the stepper ones..

…

On Wed, Nov 18, 2020, 16:50 aliahsan001 ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ Hi, the code works perfectly with DC motors, I tried to work with stepper motors, but when one turns on and changes speed the other motor shuts down, can you help me? Hi, I am also trying to work with 3 stepper motors 28BYJ-48 am facing a different issue like the speed of motor is not what i set in the processing. e.g if i set it 200 step/sec it run less than that. Did you figure out your problem and can help please? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://gist.github.com/1349176#gistcomment-3531540>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AHN5ELFNNYV5PBC2NLOYYCLSQOUX3ANCNFSM4HI43HAA> .