DIYables LCD1602 I2C 16x2 Blue Backlight 3.3V, Built in Potentiometer
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Quick Overview
This DIYables LCD1602 I2C display is a 16x2 character LCD with a blue background and white text, built on a compact board where the I2C driver chip is integrated directly onto the LCD PCB instead of using a separate backpack module. This on-board design keeps the module slim and compact while still providing simple 4-wire I2C connection (VCC, GND, SDA, SCL).
The display is designed for native 3.3V operation, so it works directly with 3.3V microcontrollers such as ESP32 and Raspberry Pi without needing a logic level shifter. A contrast adjustment potentiometer is also built directly onto the LCD PCB, so no extra add-on board is needed to fine-tune screen contrast.
Ideal for status displays, sensor readouts, menus, and data monitoring projects on 3.3V platforms. The I2C interface reduces wiring complexity and frees up GPIO pins on your microcontroller.
Key Features
- Integrated I2C Chip on PCB — I2C driver chip is built directly onto the LCD circuit board instead of a separate backpack module for a slimmer, compact size
- 3.3V Native Logic Level — Works directly with 3.3V microcontrollers such as ESP32 and Raspberry Pi without a logic level shifter
- Built In Contrast Potentiometer — Contrast adjustment potentiometer is integrated onto the LCD PCB with no extra wiring or add-on board required
- 16x2 Blue Background Display — Clear 16 column, 2 row character display with blue background and white text for easy readability
- Simple 4-Wire I2C Connection — Only VCC, GND, SDA, and SCL wires are needed, reducing wiring complexity
- Compact Form Factor — On-board I2C circuitry results in a slimmer module than designs using a separate I2C backpack
- GPIO Pin Saving — I2C interface frees up GPIO pins compared to parallel-interface LCD displays
- Versatile Applications — Suitable for status displays, sensor readouts, menus, and data monitoring projects
SPECIFICATION
| Specification | Value | |
|---|---|---|
| Product Type | LCD Character Display with Integrated I2C | |
| Display Size | 16x2 (16 columns, 2 rows) | |
| Background Color | Blue | |
| Interface | I2C (4 wires | VCC, GND, SDA, SCL) |
| I2C Chip Placement | Integrated directly onto LCD PCB (no separate backpack) | |
| Supply Voltage | 3.3V | |
| Contrast Adjustment | Built-in potentiometer on LCD PCB | |
| Package Quantity | 1 piece | |
| Compatibility | 3.3V microcontrollers and single board computers | |
| Applications | Status displays, sensor readouts, menus, data monitoring |
COMPATIBLE HARDWARE
- ESP32 development boards — I2C connection via SDA/SCL at native 3.3V logic
- Raspberry Pi (all models) — I2C connection via SDA/SCL at native 3.3V logic
- 3.3V Arduino boards — direct I2C connection without a level shifter
- Any 3.3V microcontroller with I2C interface — direct connection via SDA/SCL pins
