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Type: Posts; User: bvernham

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  1. Replies
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    5444 Teensy at 100K with both SCL and SDA...

    5444

    Teensy at 100K with both SCL and SDA
    5445

    Teensy at 400K with both SCL and SDA

    100K will acknowledge but will not display demo sketch.

    Still just spinning my wheels here.
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    /* NKC Electronics serial display - Demo ...

    /*
    NKC Electronics serial display - Demo

    Demonstrates different functions of the Serial LCD module

    The circuit:
    * LCD SCL pin to Arduino SCL pin or Analog 5
    * LCD SDA pin to Arduino...
  3. Replies
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    322,926

    Cranky LCD

    I got home and got a hold of my scope. Please see below.
    5438



    5439

    Let me know if you have any ideas why this may be happening.
  4. Replies
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    I have tried it on the Uno because fo the 3.3V vs...

    I have tried it on the Uno because fo the 3.3V vs 5V ratings. I need to check if this is 5V tolerant.

    I also tried lower 200K and 100K but still had the same problem.

    Thanks

    Bruce
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    "When you ran the LCD with the UNO, what did you...

    "When you ran the LCD with the UNO, what did you do for the 3v3 logic and power levels the LCD wants."

    My previous experience are using the 5V version of this LCD with the UNO/Mega/Mega Junior,...
  6. Replies
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    I2C Slave LCD Not working

    I have and LCD I2C Slave:

    http://media.nkcelectronics.com/datasheet/NKC2004SD-NSW-BBW-33V33.pdf
  7. Replies
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    322,926

    Once again... both 10K and 5K (10K in parallel)...

    Once again... both 10K and 5K (10K in parallel) were tried with the same result.
  8. Replies
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    Pull ups are 10K on the board. I tried adding...

    Pull ups are 10K on the board. I tried adding another 10K (so actually 5K) in parallel and it did not help.
  9. Replies
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    322,926

    I can't seem to get I2C to work correctly

    Arduino 1.0 library:


    /*
    NKC Electronics serial display - Demo

    Demonstrates different functions of the Serial LCD module

    The circuit:
    * LCD SCL pin to Arduino SCL pin or Analog 5
  10. Replies
    639
    Views
    322,926

    I2C LCD to working correctly

    I can't seem to get I2C to work correctly

    I tried the standard "wire.h" but I can not get the i2C LCD to work.

    I have used the Serial LCD Module 20x4 Blue with White Backlight 5v version for...
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