• 1
    Step 1



    Picture of HOW TO MAKE THE HUD





    How does HuD works?

    So how does the HuD work? High school physics tells you that light reflects on a mirror, refracts on a semitransparent mirror, and passes through a transparent glass. We will be using exactly that principle here.


    Cut the thick polythene sheet into 5 equal square shaped pieces.

    Arrange four pieces as a cube with OLED and glue it together.

    Fix the light refractor by placing the sixth piece diagonally inside the cube.

    Glue it such that one surface is facing the OLED display and the other is facing the side of your eye.

    Finally fix the last piece and seal it.

    Tadda!! That is your HuD display. So simple!

  • 2
    Step 2


    OLED Display

    Picture of OLED Display


    I used a Chinese OLED display that works on the SPI bus. It took me almost a day to figure out the data sheet. I found out that the u8lib library is needed to make it work.

    Now connect the SPI OLED Display to the SPI pin of the Arduino Nano.

    Connect this OLED display with a long wire to fit near your eye for easy view.

    Now download the library file and extract it into your Arduino library folder.

    Now uncomment the particular OLED driver in the program to enable your OLED Display

      Test with different modes in Library Example folder.

    • 3
      Step 3


      OLED and AR Display

      Picture of OLED and AR Display



      Test the OLED with the AR glass by using the sample code and adjust the display for better viewing experience.

      The major problem with this AR display is that we are using a mirror to refract the rays so the image to be displayed, has to be inverted. This requires you to build a library with the inverted alphabet and bitmaps to display it properly.

      There are many websites, which converts bitmap into HEX code that can be used directory into the OLED library files.

      You can use a small concave lens for better Focal length