16×2 Character Display • I2C Interface • Adjustable Contrast • Blue Backlight
Clear 16×2 Display
Shows up to 16 characters × 2 lines of text with crisp white characters on a vivid blue LED backlight — perfect for status readouts and data displays.
Built-in I2C Interface
Features an I2C backpack for easy 2-wire communication — only SDA and SCL pins needed, saving valuable GPIOs on your microcontroller.
Adjustable Contrast
Onboard potentiometer lets you fine-tune display contrast easily. Ideal for adapting to different lighting environments and viewing angles.
Technical Specifications
Parameter
Value
Display Type
16×2 Character LCD (Alphanumeric)
Interface
I2C (SDA, SCL)
Controller
HD44780 or compatible via PCF8574 I2C expander
Operating Voltage
5 V DC
Backlight
Blue LED with white characters
Contrast Adjustment
Via onboard potentiometer
I2C Address
Default 0x27 (adjustable via jumpers)
Pinout
GND / VCC / SDA / SCL
Dimensions
Approx. 80 × 36 × 12 mm
Pack Quantity
1 display module
Why Choose the LCD1602 I2C Display?
The LCD1602 I2C Display makes adding text output to your projects simple and efficient. Using the I2C interface, you only need two data lines instead of a full 8-bit parallel connection — saving pins on Arduino, ESP32, or Raspberry Pi boards.
Its bright blue backlight and adjustable contrast make it ideal for status displays, sensor readouts, or debugging data in any lighting condition. A must-have for students, makers, and embedded developers.
Quick Wiring
GND → Ground on your controller
VCC → 5 V power
SDA → I2C data pin (A4 on Arduino UNO)
SCL → I2C clock pin (A5 on Arduino UNO)
Tip: Install the LiquidCrystal_I2C library in Arduino IDE, then use the example sketch to display text in seconds. Adjust the contrast screw if text isn’t visible immediately.
Warning: Operate at 5 V only. Connecting directly to 3.3 V logic may cause dim output or communication errors. Always check the I2C address (0x27 or 0x3F) before uploading code.
Technical Specifications
Operating Voltage
3.3 V – 5 V DC
Channels
3 (independent, adjustable)
Outputs
3× Digital (active level varies by board)
Sensing Elements
IR LED + Phototransistor (per channel)
Detection Distance
Approx. 2–15 mm (surface-dependent)
Indicators
Per-channel status LEDs
Adjustments
3× trim-pot threshold controls
Connector
VCC / GND / D1 / D2 / D3
Recommended Use
Educational, R&D or hobbyist environments only
Product Details
Safety & Compliance
Statement
For educational laboratory and R&D use only.(non-RoHS).
WEEE
Not subject to WEEE marking; obligations apply to final equipment.
Manufacturer
Little Muffins Things Limited
166 River Heights, 90 High Street
London E15 2GQ littlemuffinsthings.com