Exercising slow

All questions about motion or speed are only complete with an appropriate frame of reference.
Exercising slow at 50.8357°N & 4.3615°E,
I find myself in between projects, exploring our perception of time in preparation of a new installation.

The last 11 months David De Buyser and I worked together on our projects in a series of residencies.
At NADINE we present our different interests in a collaborate scenography.
Our current state of ideas about sound, light and movement linked in a series of events.

concrete block 19/39/9 cm 8.6 kg birch platform 25.5 cm

nadine platform 15 meters long

Code

Here's the code I used to drive a linear actuator hooked up to the Nanotec SMC11 stepper driver board.

/* Code to control the Nanotec SMC11 stepper board from an arduino
*/

int EnPin = 2;      // Enable low = active, high = disabled
int DirPin = 3;      // Direction low = active, high = disabled
int ClkPin = 9;   // CLK
int sensorPin = A0;    // select the input pin for the potentiometer
int sensorValue = 0;  // variable to store the value coming from the sensor
int CurrPin = 6; // Current enable pin
int incomingByte; 
int ctrl = 0;



void setup()
{
  pinMode(EnPin, OUTPUT);   // sets the pin as output
  pinMode(DirPin, OUTPUT);   // sets the pin as output
  pinMode(ClkPin, OUTPUT);   // CLK
  digitalWrite(EnPin, LOW);
  digitalWrite(DirPin, LOW);
  digitalWrite(CurrPin, HIGH);
  Serial.begin(9600);
  
  
}

void loop()                     
{
 // Serial commands to arduino F = Forward, B = Backwards, S = Stop motor   
    if (Serial.available() > 0) {
    
    incomingByte = Serial.read();
        if ( incomingByte == 'F'){ 
            ctrl = 1;
            //Serial.print("F"); 
        } 
        if ( incomingByte == 'B'){ 
            ctrl = 2;
            //Serial.print("B");
        }
        if ( incomingByte == 'S'){
            ctrl = 0;
            //Serial.print("S");
        }
    }
     
  
  
    switch (ctrl) {
    case 1:
      //do something when var equals 1
      //Serial.print("1");
      forward();
      break;
    case 2:
      //do something when var equals 2
      //Serial.print("2");
      backwards();
      break;
    case 0:
      stops();
  }
    
    
}

void run()
{
   
  digitalWrite(ClkPin, LOW); //active
  delayMicroseconds(200); 
  digitalWrite(ClkPin, HIGH);//disabled
  delayMicroseconds(400); 
 
}

void forward()
{
  digitalWrite(EnPin, LOW);
  delayMicroseconds(150);
  digitalWrite(DirPin, LOW);
  delayMicroseconds(150);
  run(); 
}

void backwards()
{
  digitalWrite(EnPin, LOW);
  delayMicroseconds(150);
  digitalWrite(DirPin, HIGH);
  delayMicroseconds(150);
  run();
  
}

void stops(){
  digitalWrite(EnPin, HIGH);
  delayMicroseconds(150);
  
}

xbee config

Using moltosenso network manager iron to configure Xbee modules. Using Xbee Pro series 2