LCD1602 16x2 Character LCD Module Blue Backlight I2C Ready

📟 LCD1602 16×2 Character LCD Module — Blue Backlight

The classic 16-character by 2-line alphanumeric display, HD44780-compatible and driven by four or eight parallel data lines (or just two wires with an I2C backpack). Blue background, white characters, 5 V supply — the display nearly every Arduino tutorial starts with.

✨ Key Features

• 16 columns × 2 rows of alphanumeric characters
• HD44780-compatible controller with huge library support

• 4-bit or 8-bit parallel interface

• Blue backlight with white text and adjustable contrast

• Standard 16-pin 0.1" header footprint

• Built-in character generator including Kana

• I2C-ready — add a PCF8574 backpack for two-wire control

🔬 Specifications

• Display: 16 × 2 characters, 5 × 8 dot matrix
• Controller: HD44780 equivalent
• Supply voltage: 5 V DC
• Backlight: blue LED, white characters
• Interface: 4/8-bit parallel (VSS, VDD, V0, RS, RW, E, D0–D7, A, K)
• Contrast: set via a potentiometer on V0
• Viewing area: approx. 64.5 × 16 mm
• Module size: approx. 80 × 36 mm

💡 Perfect For

• Arduino / ESP32 / Raspberry Pi status displays

• Menu systems paired with a rotary encoder

• Direct sensor readouts: temperature, voltage, distance
• Standalone projects that should not need a serial monitor

📦 Notes

A blank screen is almost always a contrast problem — wire a 10 kΩ potentiometer on V0 and turn it until the blocks darken. For I2C use you need a PCF8574 backpack, which is not part of this module.