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@MonsterHunter445, I have the same setup as you - a ND+2 with the same I2C LCD. Instead of connecting the SDA and SCL of the LCD to A4 and A5, I tied it to SD and SC repectively. Unfortunately it does not work. I hope someone can provide a simple "Hello World" sample out there for the ND+2 interfacing an I2C LCD. Please advise. Thanks
I just got ND+2 and SainSmart IIC/I2C/TWI Serial 2004 LCD but am having problems getting it to work. My wiring diagram between the LCD and ND+2 is pretty simple: Vcc -> 5V, Gnd -> Gnd, SDA -> SD and SCA -> SC. I did not tie the A4 and A5 pins though. Do I have to do that? Also do I need pullup resistors for the SDA and SCA connections? I use the LCD library from http://microliquidcr...l.codeplex.com/ but no luck. If anyone has successfully get the ND+2 and said LCD to work, please help me by sending your wiring diagram and sample code with the library that you use. Many thanks.
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