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Topics - fraryb

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Character LCDs / NHD-C0220BiZ-FSW-FBW-3V3M I2C not working.
« on: May 06, 2015, 08:53:00 AM »
Having problem getting display to respond to I2C commands.  Changed pullups over range from 27k down to 4.7k ohms and over 400kHz down to 10kHz without success. Can get response to enumeration query only when 3.3 volt supply is removed (open circuit).  Using generic I2C arduino code as well as that from datasheet.  Any help will be greatly appreciated.

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