You should find it on the back of the LCD connected to pin 15 (Anode). Most LCDs have a built-in series resistor for the LED backlight. In order to test the display, you will need to make the connections as shown in the figure below. You will only need to change the size specifications in your Arduino code. These LCDs are available in many different sizes (16×2 1602, 20×4 2004, 16×1 etc.), but they all use the same HD44780 parallel interface LCD controller chip from Hitachi. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to products on. How to control a character I2C LCD with Arduino.Check out the tutorial below if you want to use an I2C module as well: Recommended tutorials: With this I2C module, you only need two connections to control the LCD. I therefore like to use them with an I2C interface module mounted on the back. As you will see, you need quite a lot of connections to control these displays.
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