iic i2c twi serial 2004 20x4 lcd module shield factory

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ERM2004SYG-2 is 20 characters wide,4 rows character lcd module,SPLC780C controller (Industry-standard HD44780 compatible controller),6800 4/8-bit parallel interface,single led backlight with yellow green color included can be dimmed easily with a resistor or PWM,stn-lcd positive,dark blue text on the yellow green color,wide operating temperature range,rohs compliant,built in character set supports English/Japanese text, see the SPLC780C datasheet for the full character set. It"s optional for pin header connection,5V or 3.3V power supply and I2C adapter board for arduino.

LCD Display Module I2C 20x4 Blue Arduino -  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.

A regular LCD is substantially more difficult to connect than an I2C LCD. Instead of 12, only 4 pins must be connected. Start by connecting the GND pin to the ground and the VCC pin to the Arduino"s 5V output. The I2C communication pins are all that is left at this point. Keep in mind that the I2C pins on each Arduino board vary and must be linked appropriately. The SDA (data line) and SCL (clock line) are located on the pin headers close to the AREF pin on Arduino boards with the R3 configuration. They also go by the names A5 (SCL) and A4 (SDA).

To power, the LCD, connect the Arduino"s USB port. The backlight will be visible lighting up. You will now begin to see the first row of rectangles as you adjust the potentiometer"s knob. Congratulations if that occurs! Your LCD is operational. After completing this, we can begin programming the LCD.

You must first install a library called LiquidCrystal I2C to drive an I2C LCD. The LiquidCrystal library that comes with your Arduino IDE has been improved by this library.

You can narrow your search by entering "liquid-crystal." Several entries ought to be present. Look for Frank de Brabander"sLiquidCrystal I2C library. Select Install after clicking that entry.

As was already said, the manufacturer determines the LCD"s I2C address. The default I2C address for LCDs powered by Texas Instruments PCF8574 chips is 0x27Hex. The default I2C address for LCDs powered by NXP Semiconductors" PCF8574 chip is 0x3FHex.

Therefore, your LCD"s I2C address is most likely 0x27Hex or 0x3FHex. However, it is advised that you ascertain the LCD"s precise I2C address before utilizing it. Fortunately, there is a simple method for doing this, due to Nick Gammon.

A straightforward I2C scanner sketch created by Nick scans your I2C bus and gives the addresses of each I2C device it encounters. Launch your Serial Monitor after loading this sketch onto your Arduino. You get to see the I2C address of your I2C LCD.

This 2×16 character LCD Module with BLUE Backlight uses an I2C interface to communicate with the host microcontroller. This budget-conscious LCD is used on projects requiring the display of text, data, or ASCII characters of all types. Connect to Vcc, Gnd, SDA (serial data line), and SCL (serial clock line). This is a 5VDC device and will be found on the I2C bus at address 0x27 / 0x3F.