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3 Digit High Numbers — Parallax Forums

3 Digit High Numbers

Lee_SpeakmanLee_Speakman Posts: 32
edited 2006-02-22 17:29 in General Discussion
Hi gents ive got the seetroon BPP-420 LCD Display, its the one which can display characters 4 lines high.

I was just wondering how difficult it would be to write a program that displays the·text 3 characters high, that way I can fit more information on my screen.

I realise im probanly going to have to write lots of subroutines etc that gets the value and then draws it on the LCD.

Is this practical? and if so can anyone point me in the right direction to do this!

kind regards Lee S

Comments

  • PJAllenPJAllen Banned Posts: 5,065
    edited 2006-02-18 00:09
    There are several blocks in the CGRAM that are user-programmable.· So with some art you could make some blocks which could fit together to make "big numbers."· The Parallax site has a ZIP·of a Custom Character Generator program (it's at the bottom of the page.)

    The effect would be a 7-segment look.

    LCD Custom Character Creator
    http://www.parallax.com/html_pages/products/audiovisual/lcd.asp

    Post Edited (PJ Allen) : 2/18/2006 4:22:35 PM GMT
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2006-02-22 14:44
    Take a look at the 7 segments of a 7 segment display. I suppose that would easily get you double height. With a little thought, I imagine you can get to triple height.

    Block them all out on some graph paper.

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  • nick bernardnick bernard Posts: 329
    edited 2006-02-22 17:29
    i have one, i can help.
    the bpp-420 has only 8 custum-character slots. these are also the slots that the bpp-420 uses to generate the large font (check out the ascii map in this pdf http://seetron.com/pdf/bpp423.pdf) . you can edit those to resemble a 7-segment map (draw a 7-segment 8 ontop of a 3x3 set of squares for a reference). but if you do you'll have to reset them if you use the large font for text.

    drawing the characters will be tricky. you'll want to write a subroutine that takes 2 inputs, the digit and the value it holds. the position command (16) will be your best friend.

    try to write a script of your own and post it here if you have any trouble.

    good little question you have there,
    roxon
    nickb

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