• About EEVblog

    Check Also

    EEVblog #821 – Mailbag

    EEVblog #821 – Mailbag

    More Mailbag! Extended Teardown Video HERE Forum HERE SPOILERS: Military Mystery Item Teardown – UPDATE: ...

    • rico

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

    • http://koren.es Jose Carlos Moreno

      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.

    • minifloat

      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

    • http://www.elproducts.com Chuck

      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.

    • Leo Bodnar

      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.

    • Mikael Sundin

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

    • Pingback: John Robertson()

    • Pingback: ccn2785xdnwdc5bwedsj4wsndb()

    • Pingback: 3nvb54wnxd5cbvbecnv5ev75bc()