16x2 Characters LCD IIC Interface (White on Blue) (screen) 1602 A

This 16x2 character LCD display features a blue backlight with white text for high contrast readability. It includes an integrated I2C interface module (typically based on the PCF8574 GPIO expander), which significantly reduces the number of pins required compared to standard parallel LCDs.

While a standard 1602 LCD requires six digital pins for data and control, this I2C version connects using only two lines (SDA and SCL) plus power. This leaves your microcontroller's other GPIO pins free for sensors or actuators. The default I2C address is usually 0x27, though it varies by manufacturer; an I2C scanner sketch is recommended to confirm the address.

Specifications

• Display Type: Blue backlight / White character LCD
• Format: 16 characters x 2 lines (1602)
• Interface: I2C (SCL, SDA, VCC, GND)
• Controller: Compatible with Hitachi HD44780 driver
• Operating Voltage: 5V
• Typical I2C Address: 0x27 (verify per batch)

Recommended Libraries: LiquidCrystal_I2C (Frank de Brabander) or LiquidCrystal for PCF8574. Use an I2C scanner to confirm the module's address before integration.