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This a modified Version From the original autor BeforeFly to add more I2C direcctions (0x20 & 0x3F). When I Bought a I2C LCD Module from a chinese web, the I2C addres isn't in the Original Extension ...
The code was tested on: copy of Arduino Nano with ATMEL ATMEGA328P-AU microcontroller and CH340G USB converter Shield I/O for Arduino NANO 3.0 DS3231 RTC module LCD 1602 HD44780 with IIC/I2C serial ...
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