Etch-a-sketch IEEE (diagonal)

gistfile1.txt

/* 
Stepper Motor Control - one revolution <<<<<<<<<<<<<<<<<<<<< Modified

This program drives a unipolar or bipolar stepper motor. 
The motor is attached to digital pins 8 - 11 of the Arduino.

The motor should revolve one revolution in one direction, then
one revolution in the other direction.  

 
Created 11 Mar. 2007
Modified 30 Nov. 2009
by Tom Igoe

*/

#include <Stepper.h>
const int stepsPerRevolution = 200;  // change this to fit the number of steps per revolution
//const int stepsPerRevolution = 200;  // change this to fit the number of steps per revolution
                                    // for your motor

// initialize the stepper library on pins 8 through 11:
//  Stepper myStepper(stepsPerRevolution, 8,9,10,11);              
Stepper horiz(stepsPerRevolution, 11,9,10,8);   // <<<<<<<<<<< Note 8 & 11 swapped
Stepper vert(stepsPerRevolution, 7, 5, 6, 4);

void setup()
{
  horiz.setSpeed(150);
  vert.setSpeed(150);
 // set the speed at 60 rpm:
// myStepper.setSpeed(120);                  //<<<<<<<<<<<<<<< This was 60
 // initialize the serial port:
 Serial.begin(9600);
}

void drawI()
{
  // I
  for (int i = 0; i < 6; i++) {
    vert.step(-stepsPerRevolution);
  }
  delay(500);
}

void drawE()
{
  // E
  for (int i = 0; i < 8; i++) {
    horiz.step(stepsPerRevolution);
  }
  for (int i = 0; i < 4; i++) {
    horiz.step(-stepsPerRevolution);
  }
  for (int i = 0; i < 2; i++) {
    vert.step(-stepsPerRevolution);
  }
  for (int i = 0; i < 4; i++) {
    horiz.step(stepsPerRevolution);
  }
  for (int i = 0; i < 4; i++) {
    horiz.step(-stepsPerRevolution);
  }
  for (int i = 0; i < 2; i++) {
    vert.step(-stepsPerRevolution);
  }
  delay(500);
}

void lastE() {
  for (int i = 0; i < 4; i++) {
    horiz.step(stepsPerRevolution);
  }
}
  
void loop()
{
  drawI();
  drawE();
  drawE();
  drawE();
  lastE();
  delay(5000);
}