
Great little gimmicks. They don't draw much power, in fact I connected power to the Arduino's output pin and can turn it on and off when I need to display something (for super low power consumption). If you're just writing text, the Arduino LiquidCrystal_I2C library has a minimal amount of code that works well. Don't forget that the small two-pin connector on the back requires a jumper (or resistor for dimming) for the display to work. The contrast control on the back optimizes the contrast of the LCD display.

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