I2C 16x2(1602) LCD Display Module for Arduino

This is a 16x2 LCD display screen with I2C interface. It is able to display 16x2 characters on 2 lines, white characters on blue background.

Usually, Arduino LCD display projects will run out of pin resources easily, especially with Arduino Uno. And it is also very complicated with the wire soldering and connection. This I2C 16x2 Arduino LCD Screen is using an I2C communication interface. It means it only needs 4 pins for the LCD display: VCC, GND, SDA, SCL. It will save at least 4 digital/analog pins on Arduino. All connectors are standard XH2.54 (Breadboard type). You can connect with the jumper wire directly.

To avoid the confliction of I2C address with other I2C devices, such ultrasonic sensor, IMU, accelerometers, and gyroscope, the I2C address of the module is configurable from 0x20-0x27. And its contrast can be adjusted manually.

Another alternative option is I2C 20x4 Arduino LCD Display Module if more characters are required.

Last update: V1.2:

• I2C connector:  VCC, GND, SCL, SDA

• Compatible with Arduino/Genuino UNO, Leonardo, Mega, 101 (Intel Curie), Micro, Nano, Mini
• I2C Address:0x20-0x27(0x20 default)
• Back lit (Blue with white char color)
• Supply voltage: 5V
• Interface:I2C/TWI x1,Gadgeteer interface x2
• Adjustable contrast
• Size: 80x36x20mmz(3.1x1.4x0.7in)

Project 1. IoT Plant Moisture Notifier
Get a text or call if your plant is getting too dry, along with a nice LCD display giving information regarding your plant's health.
Hardware Components:
Particle Photon
Soil Moisture Sensor For Arduino
I2C 16x2 Arduino LCD Display Module
RGB Diffused Common Cathode
Micro USB Connector
Uxcell Perf Board 4x6cm

Project 2. How to Make An Automatic Water Changing System
Main Components:
DFRduino UNO R3  *1
Gravity: IO Expansion Shield for Arduino V7.1 *1
Gravity: Analog Turbidity Sensor For Arduino *1
Immersible Pump & WaterTube *1
Gravity: Analog pH Sensor / Meter Kit For Arduino *1
Wall Adapter Power Supply 12VDC *1 Solenoid Valve *1
Gravity: Digital 5A Relay Module *1
Water Pipe *2m
Interface (for solenoid valve) *2
I2C 16x2 Arduino LCD Display Module

• Wiki                            
• Schematic 
• Arduino I2C 1602 LCD Library        
• Sample code            
• HD44780 LCD datasheet

• I2C 16x2 LCD Screen (Arduino Compatible) x1
• 1.27 mm Ribbon IDC10 Cable x1