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I2C commands for PCF8591

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  • I2C commands for PCF8591

    Take a PCF8591
    clk to IO 2 from oLED display
    data to IO 7 from oLED display
    two pullups from clk and data to +3v
    GND A0 A1 A2 and refgnd to gnd
    VS and ref to +3v
    Analog voltage from potmeter to ch0 input
    upload the BMP's to a µSD card
    0.BMP
    1.BMP
    ...
    25.BMP
    Upload the soft and a nice Bargraph appears
    Attached files bargraph.zip (318.8 KB) Bargraphtest01.4dg (4.3 KB)
    µLCD-70DT & Arduino DUE

  • #2


    Wow! nice I2C implementation as well as good graphics!
    Good work, thumb up.

    Oscar G.
    Oscar G.
    4D Systems Software Engineering
    http://www.bricogeek.com

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    • #3


      Sounds like a good candidate for a you tube video :-)
      Don McKenzie

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      • #4


        Excellent!!! Did you use a microcontroller with I2C communication to send data to the uOLED-32028-PMT3 display!!!
        Bradley Gibson

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