Connect I2C LCD to Arduino

What is a primary advantage of using an I2C LCD adapter with an Arduino?

• It significantly reduces the number of Arduino pins required for connection.

• It increases the physical size of the LCD display.

• It enables wireless communication between the LCD and Arduino.

• It improves the display's resolution and color depth.

Which component is at the heart of the I2C LCD adapter, responsible for converting I2C data to parallel data for the LCD?

• A tiny trim pot

• An 8-bit IO expander chip

• A power jumper

• An LED backlight

How can the I2C address of an LCD adapter be modified to prevent conflicts when multiple I2C devices are on the same bus?

• By adjusting the contrast trim pot.

• By removing the backlight power jumper.

• By shorting specific solder jumper pads (A0, A1, A2).

• By connecting the SDA and SCL pins to different analog inputs.

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What component is used to adjust the contrast of an LCD display?

• A resistor

• A capacitor

• A potentiometer

• A diode

How can you determine the I2C address of an LCD display if you are unsure of its manufacturer's chip?

• Check the LCD's datasheet for a fixed address.

• Use a multimeter to measure the address.

• Run a simple I2C scanner sketch.

• Guess common I2C addresses until one works.