Mrbbp

Most recent activity

• ShiftOut question for Hannio flipDot Display

  @Mrbbp started

  • 18 comments
  • 900 views

  @allObjects replied
• ShiftOut question for Hannio flipDot Display

  in Interfacing • 2 months

  

  Gorgeous!
  Bravo @allObjects.
  Thanks so much for your work.

  Have you try to chain 2 flip dot display?
  How to screen something on one display and follow on the second one?
  In the arduino's lib, it seems possible.
  On the hannio github, there is a schematic to chain two flipdot.

• Graphics lib: is it possible to mirror the buffer?

  in JavaScript • 6 months, 2 weeks

  

  Oh great this exactly what i'm looking for.
  Want to display text on display reflected in water...
  Thanks.

  é

• ShiftOut question for Hannio flipDot Display

  in Interfacing • 6 months, 2 weeks

  

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

  Arduino code

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

• ShiftOut question for Hannio flipDot Display

  in Interfacing • 6 months, 2 weeks

  

  I've decided to work by a different way. Too many time lost on that.
  I'm connecting the espruino to an arduino which control the flipdot display trough a serial wire to transfer an arrayBuffer.

• transform a ArrayBuffer to an array

  @Mrbbp started

  • 7 comments
  • 285 views

  @Mrbbp replied
• transform a ArrayBuffer to an array

  in General • 6 months, 2 weeks

  

  yes, great the use of println()... there is a final CR, easy to detect to call the refresh display function.
  thanks.

  é.

• transform a ArrayBuffer to an array

  in General • 6 months, 2 weeks

  

  Hello,
  As i enable to control the flipdot hannio' display ( see forum) with an espruino.
  I'm trying to communicate to an arduino which control the display.
  Spi and i2c are in use in the arduino so i do with serial. It's not really good (i suppose i'm trying comm to fast) but i'm able iniate a com between the boards...
  I'm able to transfer array, but at the moment, not the arrayBuffer.

  Regards

• transform a ArrayBuffer to an array

  in General • 6 months, 3 weeks

  

  Hye, Gordon
  I need of a byte array (0,1) (pixel OFF, pixel ON) row by raw.
  the matrix is on/off not in 8bits.
  or i do not understand what is an arrayBuffer...

  in your example it is suppose to do that (it's exactly what i need to transfer to my display via serial):

  //0,0,0,0,0,0,0,0
  //0,1,1,0,0,0,1,1
  //0,1,1,0,0,0,1,1
  //0,0,1,1,0,1,1,0
  //0,0,0,1,1,1,0,0
  //0,0,1,1,0,1,1,0
  //0,1,1,0,0,0,1,1
  //0,1,1,0,0,0,1,1
  

  it does not... why?

• transform a ArrayBuffer to an array

  in General • 6 months, 3 weeks

  

  Hello,

  i'm trying to work with arrayBuffer but i'm bad...
  I'm using exemple in the graphics library at Internal Use

  require("Font4x7").add(Graphics);
  var g = Graphics.createArrayBuffer(5,7,1, {zigzag:true});
  g.setFont4x7();
  g.drawString("hello",compteur,0);
  

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

  when i use the g.print()it does not produce an array of 0 and 1...
  but that...

  new Uint8Array([112, 240, 199, 7, 4])
  new Uint8Array(5)
  new Uint8Array(5)
  new Uint8Array(5)
  new Uint8Array(5)
  new Uint8Array(5)
  new Uint8Array(5)
  

  i would like to send via Serial an array of row and colum as in the exemple of print()

  thanks for you help