2004 character lcd module display supplier

A 20×4 dot matrix Character LCD Module display in FSTN Positive LCD Mode, Six O’clock viewing direction, Wide Temperature Range (Operating Temp: -20°C to 70°C, Storage Temp: -30°C to 80°C), and White LED Backlight. It has a transflective polarizer, recommended for applications that will be used both indoor and outdoor. This product is assembled Chip On Board with 1/16 Duty and a Controller. The interface type is Parallel. This is an ROHS Compliant product manufactured with ISO standards and procedures.

These displays are straightforward to use and are a great way to provide a user interface on many projects where you need more info than simple LED indicators or 7-Segment displays can provide since these are full alphanumeric displays with 4 lines of 20 characters each for a total of 80 characters which is a fair amount of info.  For an interactive display, pairing this type of display with a rotary encoder to navigate and select menu items on the display can provide a very nice user interface.

The display is composed of a 20 character x 4 line LCD display with a blue backlight and white characters.  Each of the characters are composed of a 5 x 8 dot matrix for good character representation.

The backlight can go down to about 3V before it goes out.  It is not known what the safe upper limit is for driving the LCD backlight so it is probably best not to exceed 5V by too much.  At 5V, the backlight draws about 30mA, so it should also be possible to drive it with a PWM pin off a uC to allow the display to be dimmed via software if desired.

This display incorporates an I2C interface that requires only 2 pins on a uC to interface with and it has good library support to get up and running fast.   The I2C interface is a daughter board attached to the back of the LCD module.

If you need to adjust I2C address to avoid a conflict, this can be done on the I2C adapter board on the back of the module.  There are 3 address jumper locations marked A0, A1, A2.  Normally these lines are pulled high.  If you bridge these pads, it grounds that address line.  If you were to bridge all 3 to ground, the address would be 0x20.  The range of all possible addresses spans from 0x20 to 0x27

These are good quality modules and should be in the parts bin of any hobbyist.  Because of the interactivity they provide, they are both fun to play with and useful for more serious projects.

You will find the raw 20×4 displays without the I2C interface being sold, but those have a parallel bus interface that requires many pins on the microcontroller to control, so it is generally best to stick with the I2C interface version like this one.

Note that the I2C address of the module we sell is 0x27 (39 decimal) but can be adjusted if needed as explained above.  The address will be printed on the label on the bag.

This is LCD2004 Parallel LCD Display that provides a simple and cost-effective solution for adding a 16X02 or 2004 Greenor BlueLiquid Crystal Display into your project.The display offers clear and high contrast white text upon a blue or Green background/backlight.