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  • 20×4 LCD I2C on Controllino Mini

     Suspended Member updated 2 years, 3 months ago 2 Members · 2 Posts
    Questions & Troubleshooting

  • BrauJan

    Member
    August 1, 2022 at 10:54 am

    Hi All,

    I am new to Arduino and Controllino, have some programming and electrical skills.
    I get the I2C display to work on an Arduino Uno, but not on the Controllino Mini.
    Connections are: 5V, GND, SCL and SDA on Controllino and 5V, GND, A4(SDA) and A5(SCL) on Arduino Uno. Even using the Address scanner i2c_scanner gives no results on Controllino, and 0X3F on Arduino Uno. Tested two displays. Any ideas?


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