user71789

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• Cannot get my e paper to work

  @user71789 started

  • 18 comments
  • 6,689 views

  @user80458 replied
• Cannot get my e paper to work

  in Electronics • 7 years, 10 months

  

  Hi @allObject & @Gordon, thank you for your input, I found that there were an error in the mapping of the display in the code example:

  var display = require('SSD1606').connect({
      displayType: 'GDE021A1',
     spi        : spi,
        cs1Pin     : B6,
        dcPin      : B7,
        resetPin   : A5,
        busyPin    : A8,
        bs1Pin     : A6, 
        powerPin   : A7  
    });
  

  and when I added a simple digitalWrite in the init method, it actually worked.

• Cannot get my e paper to work

  in Electronics • 7 years, 10 months

  

  Gordon, I tried to unplug the 3.3v > A7 but without any luck, nothing happend.

  I would imagine, that when I run this methode

  // per default turn display off
  digitalWrite(A7, LOW);
  

  then I turn off the display, but this is not the case.

  Any other suggestions ... please:)?

• Cannot get my e paper to work

  in Electronics • 7 years, 11 months

  

  Hi guys,
  I just got my e paper from http://www.smart-prototyping.com/E-ink-E-paper-new-version-display-module-3.3V-2.04-inch-177x72.html?search=e%20paper

  And I've been following this great tutorial http://www.espruino.com/SSD1606

  When I plug in the Pico, the blue LED on the epaper lights up, so there are connection.

  Only problem is, that when I save this to the pico and also write save(); nothing happens on the display

  // per default turn display off
  digitalWrite(A7, LOW);
  
  // run following code onInit
  E.on('init', function() {
    // SPI configuration
    var spi = SPI1;
    spi.setup({
      mosi: B5,
      sck:  B3
    });
    // create display instance
    var display = require('SSD1606').connect({
      displayType: 'GDE021A1',
      spi        : spi,
      cs1Pin     : B6,
      dcPin      : B7,
      resetPin   : A8,
      busyPin    : A5,
      bs1Pin     : A6, // optional, but if not provided, you need to set the correct SPI mode 4-wire by yourself
      powerPin   : A7  // optional, just do not use the on() or off() function if you do not provide it
    });
    // activate the power to run the display, just a comfort function, 
    // you can control the power by yourself as well
    display.on();
    display.hwReset(function(){
      display.init(
        function(err){
          // (optional) fill the internal buffer for all pixels with color white, 
          // without this the default color will be black
          display.g.clear(0xFF);
          // not optional - rotate the display x and y coordinates 90 degrees to the right
          display.g.setRotation(1);
          // from here it shows the normal usage
          // set color black for subsequent uses
          display.g.setColor(0x00);
          // set fontsize, see Graphics and Fonts modules for further options
          display.g.setFontVector(20);
          display.g.drawString('Hello World!', 22, 22);
          // from here it shows the needed part
          // (needed) copy internal buffer to display buffer
          display.g.flip();
          // run the display update
          display.refreshScreen(function(err){
            // do whatever you like here, e.g. turn it off when the update is done
            // again just a comfort function
            display.off();
          });
        },
        // clearScreenColor is optional, but prevents e-paper ghosting
        // shadow of an image may be visible after refreshing (only) parts of the screen
        { clearScreenColor: 0x00 }
      );
    });
  });
  

  And I get this in the IDE

  >save()
  =undefined
  Erasing Flash.....
  Writing.............
  Compressed 81600 bytes to 10374
  Checking...
  Done!
  

• Rotary with Espruino Pico

  @user71789 started

  • 14 comments
  • 6,753 views

  @user71789 replied
• Rotary with Espruino Pico

  in Interfacing • 7 years, 11 months

  

  This is SOOO awesome, thanks @ClearMemory041063 and @luwar for your help!

• Rotary with Espruino Pico

  in Interfacing • 7 years, 11 months

  

  @luwar, thanks a million just what I needed. And for the button to work, is that "3" ... if so, where does this go on the Pico?

• Rotary with Espruino Pico

  in Interfacing • 7 years, 11 months

  

  Hi Spocki, thank you, this looks right. I dont need the LEDs, only the rotate and button functionality. Do you know how I connect it to the Pico?

• Rotary with Espruino Pico

  in Interfacing • 7 years, 11 months

  

  ClearMemory041063 I dont know, this was just how I read your suggestion, does it look right? I haven't got my breadboard yet, so before I go solder anything, I would like to know if it's right:)

• Rotary with Espruino Pico

  in Interfacing • 7 years, 11 months

  

  Hi ClearMemory041063
  Thanks a lot for all your help, I really appreciate you spending time on this. I've tried to connect the two components in a diagram:

  https://drive.google.com/file/d/0B-qOFGzMJqfYSmxUY3ZzbjRvZVU/view?usp=sharing