Cursor is hidden by default// lcd.noCursor() īlink– Display the blinking LCD cursor. For BASE you can use BIN for binary, DEC for decimal, OCT for octal, HEX for hexadecimal// lcd.print(“Enter text here”) -or- lcd.print(data,BASE) Ĭursor– Display the LCD cursor: an underscore (line) at the position to which the next character will be written.// lcd.cursor() Be sure to include double quotation marks if printing text (“”). Set Cursor – Position the LCD cursor that is, set the location at which subsequent text written to the LCD will be displayed.// lcd.setCursor(col, row) To also clear the display, use the clear() function instead.// lcd.home() That is, use that location in outputting subsequent text to the display.

Home– Positions the cursor in the upper-left of the LCD. The columns & rows depend on the type of LCD you’re using.// lcd.begin(columns, rows) Ĭlear– Removes all text and auto-positions the cursor to the upper left most corner.// lcd.clear() The formatting I will use is: Text/ Description/ Syntax to use in arduino IDEīegin– Starts the lcd screen and its column & row dimensions.

An exhaustive list can be found in the download above in the keywords text file. The following is the library for the I2C screen, be sure to include this in order to use I2C connectors, which are a lot easier to use than usual connections:īelow is a nonexhaustive list of usable functions with their descriptions. Ensure that the SCL and SDA pins of your DS3231 are connected in the same way. To connect, link the SDA to the Arduino A4 pin and SCL to the Arduino A5 pin, VCC to 5v and ground to the Arduino ground pin. Adjust the contrast to your desired level, then connect the wires to the arduino as seen in the graphic above. The blue item you see is the contrast adjustment that requires using a Philips head screw driver to see the text on screen. If you have to solder them yourself its actually quite easy as you only need to align the I2C adapter so that the GND, VCC, SDA, SCL pins point to the left of the LCD as you are looking at the screen. Depending on who you buy from, the LCM1602 may already be soldered to the LCD, while others may require you solder the connections yourself. Note that the Fritzing sketch makes it appear like you have to solder many connections to the LCM1602. Note that multiple I2C units can be used provided you’re using a TCA9548A I2C multiplexer. Use this link to be briefed on assembling the DS3231 RTC as this section focuses on the LCD only. In this project we will assemble an Arduino circuit that displays the current day and time on an I2C LCD screen. The I2C LCD is a truncated version of the traditional LCD in that the six digital pins typically assigned to the Arduino are eliminated in favor of just two analog pins.

Program at90s2313 with arduino lcd i2c