20x4 lcd display with i2c interface brands

Features：IIC/I2C interface was developed to reduce the IO port usage on Arduino board.* Old 1602 screen requires 7 IO ports but this module uses only two.* Much needed control panel IO ports can be used to add some sensors, SD card and so on.* A New High-Quality 4 Line 20 Character Lcd Module.* Potentiometer can be adjusted to control the contrast.* Back light can be turned off by removing the jumper on the back panel.Specification:* Interface: I2C* I2C Address: 0x27* Pin Definition : GND、VCC、SDA、SCL* Back lit (Yellow with Black char color)* Supply voltage: 5V* Size : 60mm×99mm* Contrast Adjust : Potentiometer* Backlight Adjust : Jumper

The LCD03 is a 20 x 4 character display that is easy to hook up to any microcontroller thanks to its support for both serial and I2C interfaces requiring only 2 data pins on the controller, plus power & ground.

Control of the backlight can be done through software via the I2C or serial interface. A 100 byte FIFO buffer is included to speed up writing to the display to avoid blocking the controller and there is support for formatting custom characters that can be stored in memory and written to screen.

A 3x4 keypad can also be connected directly to the LCD display which will scan the keypad and provide data for reading via the I2C or serial interface.

4 line, 20 positions alphanumeric LCD 2004 with HD44780 (or compatible) display controller and the standard 4/8 bit parallel interface. The available I2C interface (option) fits right on the back of the display and turns its interface from parallel to simple 2-wire I2C (perfect for microcontrollers like Arduino to save on I/O ports).

4×20 blue LCD character display with bright white LED backlight, high contrast, and optional serial interface (I2C, SDA/SCL) for microcontrollers. The display needs a 5V power supply for operation. With the I2C interface installed, the backlight can be controlled by software as well. Many different libraries for different programming languages and controller families are available, also countless examples.

With IIC/I2C interface, it only takes two I/O port thus saving more for other usages. You can adjust the contrast by the potentiometer at its back. If you dont want the backlight, you can also unplug the jumper cap at the LCD back.

If you want to add some visual output to your Arduino projects, you’ll need a display. If you need only little to display, the 20X4 LCD2004 Display with I2C Interface Module is a quite good solution.

This is 20x4 LCD Display that provides a simple and cost-effective solution that is very easy to interface with Arduino or Other Microcontrollers.. The display is 20 character by 4 line display has a very clear and high contrast white text upon a blue background/backlight. This is a great blue backlight LCD display. It is fantastic for Arduino based project.

This display overcomes the drawback of 20x4 LCD Display in which you’ll waste about 8 Pins on your Arduino for the display to get working. Luckily 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 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.

These modules are currently supplied with a default I2C address of either 0x27 or 0x3F. To determine which version you have check the black I2C adaptor board on the underside of the module. If there a 3 sets of pads labelled A0, A1, & A2 then the default address will be 0x3F. If there are no pads the default address will be 0x27.

If your current LCD is frustrating you because it occupies all your GPIO pins and lacks characters" space, it is time to replace it with this one. This LCD Display Module uses an I2C communication interface, which only needs 2 wires to display information on any microcontroller-based project, including the Arduino. It is capable of displaying 4 lines of 20 white characters on a blue background. Moreover, it is compatible with either 3.3V or 5V logic systems, which is basically everything in programmable electronics.

I2C 2004 character LCD display module is 4 lines of 20 characters. It has backlight and IIC communication interface. For Arduino beginners, it will make complicated LCD driver circuit connection easy. It can be directly connected to the Arduino Sensor Shield IIC device interface or easily connected to the Arduino with its 4 pins.

As we all know, though LCD and some other displays greatly enrich the man-machine interaction, they share a common weakness. When they are connected to a controller, multiple IOs will be occupied of the controller which has no so many outer ports. Also it restricts other functions of the controller. Therefore, LCD2004 with an I2C bus is developed to solve the problem.

I2C bus is a type of serial bus invented by PHLIPS. It is a high performance serial bus which has bus ruling and high or low speed device synchronization function required by multiple host system. I2C bus has only two bidirectional signal lines, Serial Data Line (SDA) and Serial Clock Line (SCL). The blue potentiometer on the I2C LCD2004 is used to adjust backlight to make it easier to display on the I2C LCD2004.

I²C (Inter-Integrated Circuit), pronounced I-squared-C, is a multi-master, multi-slave, single-ended, serial computer bus invented by Philips Semiconductor (now NXP Semiconductors). It is typically used for attaching lower-speed peripheral ICs to processors and microcontrollers. Alternatively I²C is spelled I2C (pronounced I-two-C) or IIC (pronounced I-I-C).

I²C uses only two bidirectional open-drain lines, Serial Data Line (SDA) and Serial Clock Line (SCL), pulled up with resistors. Typical voltages used are +5 V or +3.3 V although systems I²C (Inter-Integrated Circuit), pronounced I-squared-C, is a multi-master, multi-slave, single-ended, serial computer bus invented by Philips Semiconductor (now NXP Semiconductors). It is typically used for attaching lower-speed peripheral ICs to processors and microcontrollers. Alternatively I²C is spelled I2C (pronounced I-two-C) or IIC (pronounced I-I-C).

I²C uses only two bidirectional open-drain lines, Serial Data Line (SDA) and Serial Clock Line (SCL), pulled up with resistors. Typical voltages used are +5 V or +3.3 V although systems with other voltages are permitted.

3) Find the file LiquidCrystal_I2C which you just download. Click it open and then you"ll be prompted by "Library added to your libraries. Check "Import libraries"”. You also can see the libraries just imported have appeared on the list by Sketch->Include Library->LiquidCrystal_I2C.

If everything is correct,But the display just shows 16 black rectangles on Line 1.it may be the address of i2c is not 0x27,therfore you need to run the following code to read the address,then modify the 0x27 to which you read.

Both were thermal issues. One of the biggest causes of drive failure that I"ve seen (for mechanical drives) is moving them while they are spinning. I always shudder when I see people moving around laptops that are on. While many have SSDs now, for those with a mechanical drive, any movement, especially when not parallel to the plane of platter rotation, can quickly damage a drive. Yeah lots of them now park the heads, and even have motion/movement sensors in them to lift and park the heads, but that only reduces the probability of an issue, it does not eliminate it.

This is the I2C interface 20×4 LCD display module, a new high-quality 4-line 20-character LCD module with an onboard contrast control adjustment, backlight, and I2C communication interface. For Arduino beginners, no more cumbersome and complex LCD driver circuit connection. The real significant advantages of this I2C Serial LCD module will simplify the circuit connection, save some I/O pins on the Arduino board, simplified firmware development with a widely available Arduino library. This is a Negative Transmissive white character with blue background.

Specification:Interface: I2CI2C Address: 0x27Pin Definition: GND、VCC、SDA、SCLBacklit (Blue with White char color)Supply voltage: 5VSize : 60mm×99mmContrast Adjust: PotentiometerBacklight Adjust: Jumper