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My new USB LCD backpack board - opinions?

Discussion in 'Electronics & Electrics' started by Goth, Jan 23, 2005.

  1. decayed.cell

    decayed.cell Member

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    Resurrection. Any updates on this?
     
  2. OP
    OP
    Goth

    Goth Grumpy Member

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    Thread necromancy :Paranoid:

    In this day and age you'd be better off using something like a PIC18F2550. There are such designs in existence, I'll post tomorrow after I've had a sneep and don't have a shocking caffeine withdrawal headache.
     
  3. decayed.cell

    decayed.cell Member

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    Such as this one. But that particular one doesn't support graphic lcds like the ones based on KS0108 and T6963C which is what I'm interested in at the moment :D. I found examples of such LCDs on eBay for pretty cheap 192x64 and 240x64 I got a quote for shipping he says 20 PLN for express which is what 10 bucks!
     
  4. Odje

    Odje Member

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    http://www.semifluid.com/?p=16
     
  5. OP
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    Goth

    Goth Grumpy Member

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    Here's a PCB layout for that little project for the standard HD44780 LCDs, if anybody wants it.

    [​IMG]

    Eagle files are here and here.

    I don't see why you can't stick it on a PIC18F4550 and cut some code appropriately for it.
     
  6. decayed.cell

    decayed.cell Member

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    I would, if I knew how to write circuit diagrams etc xD
     
    Last edited by a moderator: Dec 27, 2008
  7. OP
    OP
    Goth

    Goth Grumpy Member

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    Well, here's a schematic interfacing the T6963 LCD to the PIC18F2550, with a few simple components required to support the functioning of the PIC and LCD.

    [​IMG]

    Eagle files are here and here.

    There really should be a decoupling capacitor or two connected across the power supply rails, but I forgot to include those.
     
    Last edited: Dec 28, 2008
  8. decayed.cell

    decayed.cell Member

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    Thanks! Would that support up to 240x128? And are you interested in building one or two?
     
  9. OP
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    Goth

    Goth Grumpy Member

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    It'll work with any functionality of the LCD, on the hardware level. In terms of hardware, there's really nothing much there.

    It all comes down to the microcontroller's firmware and the PC software, really.
     

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