2004 lcd module quotation

The Displaytech 204G series is a lineup of 20x4 character LCD modules. These modules have a 98x60 mm outer dimension with 77x25.2 mm viewing area on the display. The 204G 20x4 LCD displays are available in STN or FSTN LCD modes with or without an LED backlight. The backlight color options include yellow green, white, blue, pure green, or amber color. Get a free quote direct from Displaytech for a 20x4 character LCD display from the 204G series.

Assuming you are using an hd44780 lcd with one of the common i2c PCF8574 i/o expander based backpacks, use the hd44780 library and the hd44780_I2Cexp i/o class.

Then you can try the included examples for the hd44780_I2Cexp i/o class and look at them to see which header files to include, how to declare your lcd object and how to use the library.

In this tutorial, you will see how to connect i2c LCD display (Liquid Crystal Display) to Arduino using the i2c module. Before starting this article we will see what is i2c. I2C (I-square-C i.e IIC) means inter-integrated communication protocol. This is usually used to communicate between one master and multiple slaves. One of the best things about using I2C is we can reduce the connections (wiring). If you use normal LCD display, you need a total number of connections are 12. If you use I2C LCD display, you need only just 4 connection. By seeing the  example you may know the advantage of I2C protocol. I2C protocol is also known as 2 line protocol.

Of course it is very wasteful on our Digital Pin on Arduino, to overcome this problem we need an I2C LCD that works like the Shift Register so that the interface pins can be less.

I2c LCD Backpack Module has 16pin Output that can be connected with LCD pins 1602/2004 directly (permanently soldered) and has 4pin inputs (VCC, GND, SDA, SCL) .

2012 latest IIC LCD2004-character LCD display module, a new high-quality 4 line 20 character LCD module not only set the contrast control knob selector switch also has a backlight and IIC communication interface. For Arduino beginners, not for the cumbersome and complex LCD driver circuit connection and a headache, the real significance of this LCD module will simplify the circuit, this module directly into the Arduino Sensor Shield V5.0 sensor expansion board IIC device interface can, GM 4P sensor connection cable, programmed through the Arduino controller, you can easily identify the slogan, sensor data records.

Passive matrix LCDs does not reduce the digital transmitting area with transistor structures, so there is more space for both reflective and transmisive elements with in each sub pixel of a transflective color display.

The Hitachi HD44780 LCD controller is an alphanumeric dot matrix liquid crystal display (LCD) controller developed by Hitachi in the 1980s. The character set of the controller includes ASCII characters, Japanese Kana characters, and some symbols in two 40 character lines. Using an extension driver, the device can display up to 80 characters.

The Hitachi HD44780 LCD controller is limited to monochrome text displays and is often used in copiers, fax machines, laser printers, industrial test equipment, and networking equipment, such as routers and storage devices.

Compatible LCD screens are manufactured in several standard configurations. Common sizes are one row of eight characters (8×1), and 16×2, 20×2 and 20×4 formats. Larger custom sizes are made with 32, 40 and 80 characters and with 1, 2, 4 or 8 lines. The most commonly manufactured larger configuration is 40×4 characters, which requires two individually addressable HD44780 controllers with expansion chips as a single HD44780 chip can only address up to 80 characters.

Character LCDs may have a backlight, which may be LED, fluorescent, or electroluminescent. The nominal operating voltage for LED backlights is 5V at full brightness, with dimming at lower voltages dependent on the details such as LED color. Non-LED backlights often require higher voltages.

Character LCDs use a 16-contact interface, commonly using pins or card edge connections on 0.1 inch (2.54 mm) centers. Those without backlights may have only 14 pins, omitting the two pins powering the light. This interface was designed to be easily hooked up to the Intel MCS-51 XRAM interface, using only two address pins, which allowed displaying text on LCD using simple MOVX commands, offering cost effective option for adding text display to devices.