ShiftOut question for Hannio flipDot Display

Ok, soooo i did it.
Espruino (Pico) for drawing text + Arduino (Nano) for controlling through a serial com @19200

Arduino code

 [#include](https://forum.espruino.com/search/?q=%23include) <FlipDot_5x7.h>
 [#define](https://forum.espruino.com/search/?q=%23define) CLOCK 13
 [#define](https://forum.espruino.com/search/?q=%23define) DATA  11
 [#define](https://forum.espruino.com/search/?q=%23define) LATCH 10

int dataReceived = 0;

/*
  Wiring:

  OUT  Not connected to Arduino
  5V   5V
  LAT  LATCH
  GND  GND
  SCL  CLOCK
  SDA  DATA
  GND  GND
  12V  VIN
  12V  VIN

  Change false to true if the color is inverted.
*/
FlipDot_5x7 flipdot(1, 1, false);
int liste[35];
boolean flag = false;
int nItem = 0;
int temp;

void setup() {
  // serial vers sepruino
  Serial.begin(19200);
  delay(100);
  // to initiate serial
  Serial.print("");
  // 
  flipdot.begin(DATA, CLOCK, LATCH);
  flipdot.fillScreen(FLIPDOT_YELLOW);
  flipdot.display();
  delay(1000);
  flipdot.fillScreen(FLIPDOT_BLACK);
  flipdot.display();
  // to begin data sending
  Serial.write("@");
}

void loop() {
  delay(10);
}

void ecrit() {
  // draw dot by dot 
  for (int i = 0; i < 35; i++) {
    flipdot.drawPixel(i%5, int(i/5)%7, int(liste[i]));
  }
  // show on display
  flipdot.display();
  flag = false;
  // empty array
  liste[35];
}
 
void serialEvent() {
  // for debugging purpose
  temp += Serial.available();
  while (Serial.available() > 0 && !flag) {
    dataReceived = byte(Serial.read());
    if (dataReceived == 0x3E) { // if endMark
      Serial.flush();
      // for debugging purpose
      /*Serial.print("n bytes recus: ");
      Serial.println(temp);
      for (int i=0; i<35; i++) {
        Serial.print(liste[i]);
      }
      Serial.println("");*/
      nItem = 0;
      temp = 0;
      flag = true;
      // show on display
      ecrit();
    } else {
      // invert color
      if (dataReceived==0) {dataReceived=1;} else {dataReceived=0;}
      // fill the array with datas
      liste[nItem] = dataReceived;
      nItem++;
    }
  }
}

Espruino code

var compteur = 0;
var g;
var longT;

var texte = "The wind was rising, the wind was falling, lifting up her ugly wool skirt.";


Graphics.prototype.print = function() {
  for (var y=0;y<this.getHeight();y++)
  	console.log(new Uint8Array(this.buffer,this.getWidth()*y,this.getWidth()).toString());
};

function sendDatas() {
  if (compteur < -longT) {
    compteur = 7;
    console.log("reset compteur: ",compteur);
  }
  g = Graphics.createArrayBuffer(5,7,8);
  g.setFont4x6();
  g.setBgColor(1);
  g.setColor(1);
  g.drawString(texte,compteur,-1);
  var datas = new Uint8Array(g.buffer);
  if (compteur === 0) {
    longT = g.stringWidth(texte);
    console.log(compteur, longT);
  }
  Serial1.write(datas);
  Serial1.print('>');
  //g.print();
  LED1.toggle();
  compteur--;
}

function onInit() {
  require("Font4x6").add(Graphics);
  Serial1.setup(19200, {tx:B6,rx:B7});
  // wainting for init of serial com from arduino before to send datas
  Serial1.on('data', function(e) {
    console.log("serial In:", e);
    if (e == '@') {
      setInterval(sendDatas, 100);
      Serial1.removeAllListeners();
    }
  });
  USB.setConsole();
}

a video of the display in action
https://www.instagram.com/p/BeeN2OCAVyw/

ps: i've fried 5 dots, therefor i've removed the dots on the display (upper line)