6 responses to “EEVblog #248 – LCD Enabled Microcontroller Selection”

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  rico March 1st, 2012 at 01:41

  octopart http://octopart.com/ is a search engine for electronics parts

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  Jose Carlos Moreno March 1st, 2012 at 09:38

  loved as much as you’ll receive carried out right here. The sketch is attractive, your authored material stylish. nonetheless, you command get bought an shakiness over that you wish be delivering the following. unwell unquestionably come more formerly again since exactly the same nearly a lot often inside case you shield this increase.

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  minifloat March 2nd, 2012 at 00:28

  Well made tutorial, Dave!
  If the lcd you want to use doesn’t need complicated driving waveforms (with 1/3 bias or so), there’s no necessity for a -maybe- more expensive microcontroller with lcd driving capability. A close look at the lcd’s data sheet may point that out.

  Some links i found about driving a lcd with GPIO pins:
  AVR340 appnote: http://www.atmel.com/Images/doc8103.pdf
  AVR241 appnote: http://www.atmel.com/Images/doc2569.pdf
  PIC example: http://mcs.uwsuper.edu/sb/Electronics/TempLCD/

  regards, mf

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  Chuck March 5th, 2012 at 09:29

  You probably don’t need the various bias voltage levels with that simple LCD so most of the VLCD pins can be used as ADC.
  This might make the 40 pin work.

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  Leo Bodnar March 11th, 2012 at 01:19

  You can’t usually “disable” segments in a multiplexed LCD. They still need to be driven otherwise they will pick up charge and start showing through. It is much easier with non-multiplexed LCDs where you can connect unused segments to [a single] COM.
  Leo

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  Mikael Sundin March 13th, 2012 at 01:50

  Leo Bodnar: You only need one segment pin extra that you connect all unnused segments to.

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  John Robertson May 13th, 2012 at 21:19

  John Robertson…

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