Cheap LCD 16x2 characters, with I2C LCD1062 interface

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This ~2$ module is easy to use. It uses only 2 data pins, but refresh rate seems quite low. It takes quite a long to update screen. There are same displays modules without I2C interface board, but they use more pins from your board.

Hardware setup

For wemos mini d1
SLC -> D1
SDA -> D2
VCC -> 5V
GND -> GND

After you have connected module and have software ready,
you have to turn potentiometer until you can see characters.

Software setup

Needed libraries / software

There are 2 libraries, that have almost same name
https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library
https://github.com/marcoschwartz/LiquidCrystal_I2C
I have used the first one.

Code example

Links

https://www.ebay.com/itm/IIC-I2C-TWI-Serial-1602-16-2-Character-LCD-display-Module-for-Arduino-Yellow/272266353908?epid=502994050&hash=item3f6456dcf4:g:Y8MAAOxycD9TThtL