1602 (16x2) LCD Display with I2C/IIC interface - Blue Backlight

This is LCD 1602 Parallel LCD Display that provides a simple and cost-effective solution for adding a 16×2 White on Liquid Crystal Display into your project.
The display is 16 character by 2 line display has a very clear and high contrast white text upon a blue background/backlight.
This is great blue backlight LCD display. It is fantastic for Arduino based project.
This LCD1602 LCD Display is very easy to interface with Arduino or other Microcontrollers.
In this product, an I2C adapter is directly soldered right onto the pins of the display.
So all you need to connect are the I2C pins, which shows a good library and little of coding.
The I2C is a type of serial bus developed by Philips, which uses two bidirectional lines, called SDA (Serial Data Line) and SCL (Serial Clock Line).
Both must be connected via pulled-up resistors.
The usage voltages are standard as 5V and 3.3V.
If you already have the I2C adapter soldered onto the board like in this product, the wiring is quite easy.
The LCD display works with 5 Volts. So we go for the 5V Pin.
The values shown on the display can be either a simple text or numerical values read by the sensors, such as temperature or pressure, or even the number of cycles that the Arduino is performing.

I2C – Inter-Integrated Circuit:

Inter-integrated Circuit (in short I2C) is a two-wire short distance communication protocol. You can use multiple slave devices in the same two wires with one or more master controllers. You may wonder how does the master identifies which slave does the data to be sent. In I2C the external devices have an I2C address for different external devices like LCD Backpack, OLED Display, etc. By using the address the data is sent to the specific device connected on the same I2C Bus.

The message is broken into two frames and sent serially via the I2C Bus. The first frame contains the address, once the address matches with any device on I2C bus, that device will send an acknowledge signal to the master. After receiving the acknowledgment from the slave the data bits are sent. By this method an I2C bus works.

16×2 LCD Display:

A LCD Display 16x2means it can display 16 characters per line and there are 2 such lines. In this LCD each character is displayed in the 5×7 pixel matrix.

16×2 LCD Pinout:

There are totally 16 pins in an LCD Display. You can use directly all the pins in 8-bit mode with Arduino or 12 pins using 4-bit mode. In this tutorial, we use the I2C module for LCD and multiplex it into just 4 pins. This pin details might not be useful while using I2C Method but this is the actual pin details of all the pins in LCD Display.

• Vcc – Power Supply (5v)
• Vdd/GND – Ground
• V0 – Brightness Control using Potentiometer
• RS – Register select. Specify what we are sending Command or Data. Sets to 0 for Command mode like setCursor, LCD Clear, TurnOFF LCD. Set 1 for data mode like sending Data/Characters.
• R/W – Read/Write. Mostly we are writing catalog/characters to the registers.
• E – Enable writing to Registers.
• D0 to D7 – Data pins. Send 4bit/8bit data to display characters. The Arduino library provides 4bit and 8bit mode. The data will be in ASCII format.
• A/LED+ – Anode (Backlight LED)
• K/LED- – Cathode (Backlight LED)

Specifications:-

• Arduino IIC/I2C interface was developed to reduce the IO port usage on Arduino board
• I2C adapter allows flexibility in connections
• I2C Reduces the overall wirings.
• 16 characters wide, 2 rows
• White text on the Blue background
• Single LED backlight included can be dimmed easily with a resistor or PWM.
• Interface: I2C
• Interface Address: 0x27
• Character Color: White
• Backlight: Blue
• Supply voltage: 5V

Package Includes:-

1 x 1602 LCD Display with I2C/IIC interface