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Capacitance LCD Readout

Project Logs item created by bigone5500, Jul 21, 2015

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  1. Jul 21, 2015 #1
    bigone5500

    bigone5500

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    Apr 9, 2014
    bigone5500 submitted a new Showcase Item:

    Capacitance LCD Readout

    Read more about this showcase item here...
     
    davenn likes this.
  2. Aug 3, 2015 #2
    bigone5500

    bigone5500

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    I have been doing some studying and think I have figured out how to get this thing to do what I want. I will however, have to wait for my new lcd to arrive. You must not apply 12 volts to a 1602 lcd...EVER!
     
  3. Aug 5, 2015 #3
    bigone5500

    bigone5500

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    I worked on my sketch a little today and think it looks good. However, I don't have a 1602 lcd to test this out. I left the serial output in the sketch to be able to view it on the serial monitor.

    I would like someone to download this sketch and try it out if you have time. I would appreciate it. But first, please review it and let me know if there is anything that can be done differently or if anything is wrong with it.

    I will be doing a Fritzing project to go along with this soon.
     

    Attached Files:

    Last edited: Aug 15, 2015
  4. Aug 5, 2015 #4
    bigone5500

    bigone5500

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    Apr 9, 2014
    Here's the Fritzing file.
     

    Attached Files:

  5. Aug 5, 2015 #5
    bigone5500

    bigone5500

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    Apr 9, 2014
    I have updated the Arduino sketch. There were some errors I found. The sketch now compiles with no errors.
     
    Last edited: Aug 11, 2015
  6. Aug 11, 2015 #6
    bigone5500

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    *UPDATE*

    ...the Chinese Maritime Association is on the way with my new LCD. It should arrive sometime between now and then.
     
    Supercap2F likes this.
  7. Aug 11, 2015 #7
    bigone5500

    bigone5500

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    I have an I2C version of this display and am working on getting the code to work with it. I should have it working soon.
     
  8. Aug 12, 2015 #8
    bigone5500

    bigone5500

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    Here's the I2C version of the sketch. I have commented out the parts that relate to the serial LCD. I'm sure that if using a parallel display, the sketch would work fine. Just comment out the I2C parts and uncomment the serial LCD. Serial monitor also works along with LCD output. I got errors compiling while they were both listed.

    I had tried to use my Mega but the readings were way off. I installed a 1uF cap and got 4uF. A 22uF read at 75uF. It reads pretty close on my UNO. However, I am not sure I can fully trust the readings. Any ideas???

    20150811_180013.jpg
     

    Attached Files:

    Last edited: Aug 16, 2015
  9. Aug 12, 2015 #9
    bigone5500

    bigone5500

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    Apr 9, 2014
  10. Aug 15, 2015 #10
    bigone5500

    bigone5500

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    Apr 9, 2014
  11. Aug 22, 2015 #11
    bigone5500

    bigone5500

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    Apr 9, 2014
    bigone5500 updated Capacitance LCD Readout

    View updates to this showcase item...
     
  12. Jan 23, 2016 #12
    vietchiase

    vietchiase

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    Jan 23, 2016
  13. Jan 23, 2016 #13
    bigone5500

    bigone5500

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    Apr 9, 2014
    You're very welcome! And welcome to the forum!
     
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