Mrbbp

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• ST7735 at high rate?

  @Mrbbp started

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  @Gordon replied
• ST7735 at high rate?

  in Pico / Wifi / Original Espruino • 7 months, 1 week

  

  thank you.
  i do not investigate which baud i could use.
  I've tried with 32Mbits and a delay of 50ms between each frame. It works but i take 0.4s (30 percent better) but 2.5 frame/sec.
  and with an ugly scanning refresh.

• ST7735 at high rate?

  in Pico / Wifi / Original Espruino • 7 months, 1 week

  

  i tried with an hardware spi, but I don't save much time. 1 tenth of a second

  SPI2.setup({mosi:B15 /* sda */, sck:B13 /* scl */, baud:integer=1000000,});
    g =require("ST7735").connect({
      palette:colorPalette,
      spi:SPI2,
      dc:A7,
      cs:B10,
      rst:B1,
      padx:2,
      pady:3
      // height : 160 // optional, default=128
      }, ecrit
    );
  

• ST7735 at high rate?

  in Pico / Wifi / Original Espruino • 7 months, 1 week

  

  Hello, i'm back from a long circuitpython session...

  I'm playing with a small 128x128 SPI TFT display with a short generative prog

  const s = require("Storage");
  const largeur = 32;
  function ecrit() {
    console.log("écrit");
    g.clear();
    var start = getTime();
    for (let y = 0; y<128; y+=largeur) {
      for (let x = 0; x<128; x+=largeur) {
        if (Math.random()>0.5) {
          g.setColor(1);
          g.fillRect(x,y,x+largeur,y+largeur);
        } 
      }
    }
    print("dessine:",getTime()-start);
    g.flip(); //<--- Send to the display
    print("affiche:",getTime()-start);
  }
  
  var g;
  function onInit() {
    var colorPalette = new Uint16Array([0xFFF, 0]);
    // init spi
    var spi = new SPI();
    spi.setup({mosi:B15 /* sda */, sck:B13 /* scl */});
    g =require("ST7735").connect({
      palette:colorPalette,
      spi:spi,
      dc:A7,
      cs:B10,
      rst:B1,
      padx:2,
      pady:3
      // height : 160 // optional, default=128
      }, setInterval(ecrit, 500)
    );
    console.log("## mém. used: " + Math.round(process.memory().usage / process.memory().total * 100) + "% ##");
    s.getFree();
  }
  

  But the display take 0.65sec to screen the picture drawn in .02s
  Is there a way to send faster to the display?
  and avoid image scanning?

  regards

• reset(); save(); not clearing code [SOLVED]

  in Pico / Wifi / Original Espruino • 2 years, 2 months

  

  hello @AdaMan82
  sometime pico have strange behavior too and crash with clean code.
  reflashing take few seconds than trying to identify uncommon behavior in code is timeconsuming.
  i downloaded last firmware to avoid low connexion :)
  regards

• connecting a rotary encoder to a tablet through bluetooth

  in Interfacing • 2 years, 2 months

  

  Thanks @Gordon .
  i bought at lextronic french reseller (with more stock) sorry for that, i prefer buying on your shop)
  i bought an MDBT42Q breakout to try and some pico cause i love form factor.
  next week it's holliday and have some time to play with

  best regards
  é.

• connecting a rotary encoder to a tablet through bluetooth

  @Mrbbp started

  • 4 comments
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  @Mrbbp replied
• connecting a rotary encoder to a tablet through bluetooth

  in Interfacing • 2 years, 2 months

  

  ok nobody want helps?

  is the Module MDBT42Q Breakout is enough to start?
  convert it as a bluetooth HID like a keyboard?
  i read some post about that.
  if the device (the breakout) is detected as an hid bluetooth by the os, the html page doesn't have to detect an hid!? it's a keypress detected, no more.

  é.

• connecting a rotary encoder to a tablet through bluetooth

  in Interfacing • 2 years, 2 months

  

  Hello,

  i'm new with bluetooth.
  i would like to connect a rotary encoder to an ipad or an android phone and use the rotation in a web app.

  i'm able to connect the rotary and a pico board to an html page trough the HID feature on my computer.
  but now i would like to communicate to a smart thing (small screen,,,) device via BT.

  Which board do i need to do that, is BT, the good solution ?
  Please advice me.

  regards

  éric

  ps: @Gordon there is only one unpinned pico board in stock in the shop! really?

• rotary encoder strange behavior (too many datas)

  @Mrbbp started

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  @Mrbbp replied