knacro iic i2c twi 1602 serial blue backlight lcd module in stock

Frequently Asked Questions About KNACRO IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 16 X 2, 1602 White Letters on Blue Display in Barbados

Where can I buy KNACRO IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 16 X 2, 1602 White Letters on Blue Display online at the best price in the Barbados?

desertcart is the best online shopping platform where you can buy KNACRO IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 16 X 2, 1602 White Letters on Blue Display from renowned brand(s). desertcart delivers the most unique and largest selection of products from across the world especially from the US, UK and India at best prices and the fastest delivery time.

Is KNACRO IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 16 X 2, 1602 White Letters on Blue Display available and ready for delivery in Barbados?

desertcart ships the KNACRO IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 16 X 2, 1602 White Letters on Blue Display to and more cities in Barbados. Get unlimited free shipping in 164+ countries with desertcart Plus membership. We can deliver the KNACRO IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 16 X 2, 1602 White Letters on Blue Display speedily without the hassle of shipping, customs or duties.

Is it safe to buy KNACRO IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 16 X 2, 1602 White Letters on Blue Display on desertcart?

Yes, it is absolutely safe to buy KNACRO IIC/I2C/TWI 1602 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 16 X 2, 1602 White Letters on Blue Display from desertcart, which is a 100% legitimate site operating in 164 countries. Since 2014, desertcart has been delivering a wide range of products to customers and fulfilling their desires. You will find several positive reviews by desertcart customers on portals like Trustpilot, etc. The website uses an HTTPS system to safeguard all customers and protect financial details and transactions done online. The company uses the latest upgraded technologies and software systems to ensure a fair and safe shopping experience for all customers. Your details are highly secure and guarded by the company using encryption and other latest softwares and technologies.

Displays 2-lines X 16-characters. Operate with 5V DC. You can connect directly to arduino board. Module dimension: 80mm x 36mm x 15mm. Viewing area size: 64.5mm x 16mm. Arduino IIC/I2C interface was developed to reduce the IO port usage on Arduino board. I2C Address: 0x3F. Backlight (White character on Blue background). Supply voltage: 5V. Size: 82x35x18 mm. Come with IIC interface, which can be connected by DuPont Line. Weight:35g. Arduino 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. Package List: 1x IIC/I2C/TWI 1602 Serial LCD Module.

If you’ve ever tried to connect an LCD display to an Arduino, you might have noticed that it consumes a lot of pins on the Arduino. Even in 4-bit mode, the Arduino still requires a total of seven connections – which is half of the Arduino’s available digital I/O pins.

The solution is to use an I2C LCD display. It consumes only two I/O pins that are not even part of the set of digital I/O pins and can be shared with other I2C devices as well.

True to their name, these LCDs are ideal for displaying only text/characters. A 16×2 character LCD, for example, has an LED backlight and can display 32 ASCII characters in two rows of 16 characters each.

At the heart of the adapter is an 8-bit I/O expander chip – PCF8574. This chip converts the I2C data from an Arduino into the parallel data required for an LCD display.

In addition, there is a jumper on the board that supplies power to the backlight. To control the intensity of the backlight, you can remove the jumper and apply external voltage to the header pin that is marked ‘LED’.

If you are using multiple devices on the same I2C bus, you may need to set a different I2C address for the LCD adapter so that it does not conflict with another I2C device.

An important point here is that several companies manufacture the same PCF8574 chip, Texas Instruments and NXP Semiconductors, to name a few. And the I2C address of your LCD depends on the chip manufacturer.

According to the Texas Instruments’ datasheet, the three address selection bits (A0, A1 and A2) are placed at the end of the 7-bit I2C address register.

According to the NXP Semiconductors’ datasheet, the three address selection bits (A0, A1 and A2) are also placed at the end of the 7-bit I2C address register. But the other bits in the address register are different.

So your LCD probably has a default I2C address 0x27Hex or 0x3FHex. However it is recommended that you find out the actual I2C address of the LCD before using it.

Connecting an I2C LCD is much easier than connecting a standard LCD. You only need to connect 4 pins instead of 12. Start by connecting the VCC pin to the 5V output on the Arduino and GND to ground.

Now we are left with the pins which are used for I2C communication. Note that each Arduino board has different I2C pins that must be connected accordingly. On Arduino boards with the R3 layout, the SDA (data line) and SCL (clock line) are on the pin headers close to the AREF pin. They are also known as A5 (SCL) and A4 (SDA).

After wiring up the LCD you’ll need to adjust the contrast of the display. On the I2C module you will find a potentiometer that you can rotate with a small screwdriver.

Plug in the Arduino’s USB connector to power the LCD. You will see the backlight lit up. Now as you turn the knob on the potentiometer, you will start to see the first row of rectangles. If that happens, Congratulations! Your LCD is working fine.

To drive an I2C LCD you must first install a library called LiquidCrystal_I2C. This library is an enhanced version of the LiquidCrystal library that comes with your Arduino IDE.

Filter your search by typing ‘liquidcrystal‘. There should be some entries. Look for the LiquidCrystal I2C library by Frank de Brabander. Click on that entry, and then select Install.

The I2C address of your LCD depends on the manufacturer, as mentioned earlier. If your LCD has a Texas Instruments’ PCF8574 chip, its default I2C address is 0x27Hex. If your LCD has NXP Semiconductors’ PCF8574 chip, its default I2C address is 0x3FHex.

So your LCD probably has I2C address 0x27Hex or 0x3FHex. However it is recommended that you find out the actual I2C address of the LCD before using it. Luckily there’s an easy way to do this, thanks to the Nick Gammon.

But, before you proceed to upload the sketch, you need to make a small change to make it work for you. You must pass the I2C address of your LCD and the dimensions of the display to the constructor of the LiquidCrystal_I2C class. If you are using a 16×2 character LCD, pass the 16 and 2; If you’re using a 20×4 LCD, pass 20 and 4. You got the point!

First of all an object of LiquidCrystal_I2C class is created. This object takes three parameters LiquidCrystal_I2C(address, columns, rows). This is where you need to enter the address you found earlier, and the dimensions of the display.

In ‘setup’ we call three functions. The first function is init(). It initializes the LCD object. The second function is clear(). This clears the LCD screen and moves the cursor to the top left corner. And third, the backlight() function turns on the LCD backlight.

After that we set the cursor position to the third column of the first row by calling the function lcd.setCursor(2, 0). The cursor position specifies the location where you want the new text to be displayed on the LCD. The upper left corner is assumed to be col=0, row=0.

There are some useful functions you can use with LiquidCrystal_I2C objects. Some of them are listed below:lcd.home() function is used to position the cursor in the upper-left of the LCD without clearing the display.

lcd.scrollDisplayRight() function scrolls the contents of the display one space to the right. If you want the text to scroll continuously, you have to use this function inside a for loop.

lcd.scrollDisplayLeft() function scrolls the contents of the display one space to the left. Similar to above function, use this inside a for loop for continuous scrolling.

If you find the characters on the display dull and boring, you can create your own custom characters (glyphs) and symbols for your LCD. They are extremely useful when you want to display a character that is not part of the standard ASCII character set.

CGROM is used to store all permanent fonts that are displayed using their ASCII codes. For example, if we send 0x41 to the LCD, the letter ‘A’ will be printed on the display.

CGRAM is another memory used to store user defined characters. This RAM is limited to 64 bytes. For a 5×8 pixel based LCD, only 8 user-defined characters can be stored in CGRAM. And for 5×10 pixel based LCD only 4 user-defined characters can be stored.

Creating custom characters has never been easier! We have created a small application called Custom Character Generator. Can you see the blue grid below? You can click on any 5×8 pixel to set/clear that particular pixel. And as you click, the code for the character is generated next to the grid. This code can be used directly in your Arduino sketch.

After the library is included and the LCD object is created, custom character arrays are defined. The array consists of 8 bytes, each byte representing a row of a 5×8 LED matrix. In this sketch, eight custom characters have been created.