1. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
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    Hi. Does anyone know a very cheap PIC I can use and an lcd which can be used in conjunction?
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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    All PICs are cheap;) Tell us more about the LCD instead. What kind of interface does it have. Then we can guide you on the rest. By the way do have access to a programmer.
     
  3. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
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    Well the lcd needs to be a minimum of 1 line and about 25 characters.
     
  4. BMorse

    Senior Member

    Sep 26, 2009
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    look for LCD displays at Sparkfun Electronics (Make sure they are HD4478 Ccompatible)... they have a lot of different options to choose from....

    as for pic's any should work for you as long as they have enough pins to accommodate all the connections to the LCD, plus what ever else you are planning on connecting such as switches, LED's, etc...


    My .02
     
    Last edited: Nov 23, 2009
  5. t06afre

    AAC Fanatic!

    May 11, 2009
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    I suggest you find a LCD first. Then you have selected a LCD we can help with the PIC part. Then you have found a LCD, post the data sheet or a link to it here. Else our advice will only end up as shoot in the dark.
     
  6. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
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  7. t06afre

    AAC Fanatic!

    May 11, 2009
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    What ere you planning to build? For that display you will need maximum 11 signals to control the unit. You may get away with fewer signals. I used Google and could not find out any more. Anyway you must select a PIC that fits your programmer unit.
     
  8. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
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    That display is 2 lines of 8 characters.

    The 16F628A can work with it.
     
  9. BMorse

    Senior Member

    Sep 26, 2009
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    The LCD you picked does not meet your MINIMUM requirements of about 25 Chars.... 2x8 = 16 chars....

    I have some 2x20 LCD's with EL backlight for $9.00 + shipping.... They have a nice Stainless steel bezel trim and they are HD4478 compatible displays.....

    Let me know if interested.....

    My .02




    My .02
     
  10. russ_hensel

    Well-Known Member

    Jan 11, 2009
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  11. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    BMorse, that display is too long for 20 chars, looks like 40 chars length (and the image is named 2x40 too)... ;)

    Russ, thanks for the mention!
     
  12. BMorse

    Senior Member

    Sep 26, 2009
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    Yeah, my bad.... it is a 2 x 40 display (I have about 50 of these brand new still in manufacturers packaging... we switched over to VFD displays, and now I have a surplus stock of these LCD's, normally around $45.00, but I have been throwing them on ebay for $12.00 a piece + shipping...)
     
  13. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    How readable are they without having the EL backlight on?? And do you have any spec on the volts/amps needed for the EL backlight? And physical dimensions would be handy too. :)
     
  14. maxpower097

    Well-Known Member

    Feb 20, 2009
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  15. BMorse

    Senior Member

    Sep 26, 2009
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    Nope, not me, but I do have a few of those LCD's I mentioned on there
    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230404948464&ssPageName=STRK:MESELX:IT



    THE_RB, I will look those specs up tonight and let you know...... they are actually very readable without the backlight (contrast is pretty good), but in a dimly lit area, some backlighting does help, I have modified some with LED backlights and those are not too bad either (Plus you can make the back light any color with LED's, you can add filters with the EL for other shades of color, but not as cool looking as LED's.....)
     
  16. maxpower097

    Well-Known Member

    Feb 20, 2009
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    ahh ok I thought it may be you since you both say from Michigan. :)
     
  17. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    Thanks! :)
     
  18. bluebrakes

    Active Member

    Oct 17, 2009
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    this sounds an interesting pic project, any examples of code and tutorials you would use to drive this?
     
  19. BMorse

    Senior Member

    Sep 26, 2009
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    Ok, took a look at the specs (took me long enough to find the datasheet in my files!!)

    Anyway the EL backlight specs are:
    Voltage = min. 100/ max. 150 Vrms
    current = min. 4.3 / max. 9.0 mA
    frequency = min. 400 / max. 800 Hz
    1/2 Life brightness = min. 2500 / max. 3000 Hrs

    I will be putting together a little project showing how to use these LCD's with a PIC (have not decided which pic yet, I might just use the pic16F628A.) I also have some EL driver IC's from sipex and another company that I will also be trying (I get a lot of samples from companies when they have new IC's come out.) I might just post it in a blog as a project or I might put it into the Projects forum.... what do you guys think?


    B. Morse
     
  20. bluebrakes

    Active Member

    Oct 17, 2009
    245
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    yes please. especially using the 16f628a.

    BTW I was having a look at your site. very impressive engineering IMO. especially your 3 axis cnc drill.
     
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