program at90s2313 with arduino lcd keypad

Program At90S2313 With Arduino Lcd Keypad How To Display Custom

You can find an overview of them below with explanation and some code snippets.

These displays are great for displaying sensor data or text and they are also fairly cheap.

Program At90S2313 With Arduino Lcd Keypad How To Display Custom

In the second half, I will go into more detail on how to display custom characters and how you can use the other functions of the LiquidCrystal Arduino library.

I therefore like to use them with an I2C interface module mounted on the back.

With this I2C module, you only need two connections to control the LCD.

Check out the tutorial below if you want to use an I2C module as well.

You will only need to change the size specifications in your Arduino code.

The 162 and 204 datasheets include the dimensions of the LCD and in the HD44780 datasheet you can find more information about the Hitachi LCD driver.

You should find it on the back of the LCD connected to pin 15 (Anode).

If your display doesnt include a resistor, you will need to add one between 5 V and pin 15.

It should be safe to use a 220 resistor, but this value might make your display a bit dim.

You can check the datasheet for the maximum current rating of the backlight and use this to select an appropriate resistor value.

This is done by turning the 10 k potentiometer clockwise or counterclockwise.

Now rotate the potentiometer until one (162 LCD) or 2 rows (204 LCD) of rectangles appear.

Check the wiring diagram below and the pinout table from the introduction of this article.

The RW pin is connected to ground, this will pull the pin LOW and set the LCD to WRITE mode.

This library should come pre-installed with the Arduino IDE.

You can find it by going to Sketch Include Library LiquidCrystal.

Next, I will show you how the code works and how you can use the other functions of the LiquidCrystal library.

The is done with the function LiquidCrystal(rs, enable, d4, d5, d6, d7).

You can give it a different name if you want like menudisplay.

If you do not specify the cursor position, the text will be printed at the default home position (0,0) if the display is empty, or behind the last printed character.

When you want to print numbers or variables, no quotation marks are necessary.