How to program an Arduino with I2C for a liquid crystal LCD screen?

StackOverflow https://stackoverflow.com/questions/10201539

  •  01-06-2021
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Question

I am trying to get text characters to come up on my liquid crystal LCD screen. It's a 16x2 screen. It only uses four pins... GND, 5 V, SCL, and SDA pins. I'm not sure how to program it since all I'm finding online is how to program it if my screen has 16 pins to connect for programming. I believe the address for my LCD screen is 0x27.

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Solution

Check out this page on the Arduino playground that has some libraries for certain LCD I2C displays.

Your specific model may not have an Arduino library for it.

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