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MAX7219 is slow — Parallax Forums

MAX7219 is slow

Mohamed RefkyMohamed Refky Posts: 47
edited 2008-05-02 11:41 in BASIC Stamp
Hello,
In all my weigh scale applications there is a separate display board which contain the MAX7219 display driver , the LED displays and IR detector.
When I used another IR detector type I found that display became slow. Any explanation for that.
Thank You
Mohamed Refky

Comments

  • stamptrolstamptrol Posts: 1,731
    edited 2008-05-01 16:19
    You'll probably have to give us some more details before we can help.

    What is different about the detector that doesn't work compared to the original?

    What does the IR detector do? Is it part of the communication link from the indicator device to the remote display?

    Cheers,

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Tom Sisk

    http://www.siskconsult.com
    ·
  • Mohamed RefkyMohamed Refky Posts: 47
    edited 2008-05-02 09:25
    I do not have data sheet for these detectors but both have same configuration pins.
    The IR detector receives signal from universal remote to program setpoints.
    I put the detecor beside 4 LED displays and get 5V from same track that supply the MAX7219·which placed close proximity·to the display.
  • stamptrolstamptrol Posts: 1,731
    edited 2008-05-02 11:41
    Mohamed,

    The most likely cause would be that the remote control unit and the IR detector operate at different IR wavelengths. This would mean each control function has to be repeated several times before being properly interpreted.

    Cheers,

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Tom Sisk

    http://www.siskconsult.com
    ·
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