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Capacitance LCD Readout

  1. bigone5500

    bigone5500

    712
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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. bigone5500

    bigone5500

    712
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    Apr 9, 2014
    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. bigone5500

    bigone5500

    712
    120
    Apr 9, 2014
    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. bigone5500

    bigone5500

    712
    120
    Apr 9, 2014
    Here's the Fritzing file.
     

    Attached Files:

  5. bigone5500

    bigone5500

    712
    120
    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. bigone5500

    bigone5500

    712
    120
    Apr 9, 2014
    *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. bigone5500

    bigone5500

    712
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    Apr 9, 2014
    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. bigone5500

    bigone5500

    712
    120
    Apr 9, 2014
    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. bigone5500

    bigone5500

    712
    120
    Apr 9, 2014
  10. bigone5500

    bigone5500

    712
    120
    Apr 9, 2014
  11. bigone5500

    bigone5500

    712
    120
    Apr 9, 2014
    bigone5500 updated Capacitance LCD Readout

    View updates to this showcase item...
     
  12. vietchiase

    vietchiase

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    0
    Jan 23, 2016
  13. bigone5500

    bigone5500

    712
    120
    Apr 9, 2014
    You're very welcome! And welcome to the forum!
     
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