If you are using a microcontroller to interface with the JHD-2x16-I2C display, you will need to write code to send I2C commands to the display. Here's an example code snippet in C:

#include <stdint.h> #include <stdbool.h> #include <avr/io.h> #include <avr/interrupt.h>

void lcd_print(char *str) // Send I2C data TWDR = (I2C_ADDRESS << 1)

// Initialize LCD uint8_t init_sequence[] = 0x33, // Function set: 8-bit interface, 2 lines, 5x8 dots 0x32, // Function set: 4-bit interface, 2 lines, 5x8 dots 0x28, // Function set: 4-bit interface, 2 lines, 5x8 dots 0x0C, // Display control: Display on, cursor off, blink off 0x01 // Clear display ; for (uint8_t i = 0; i < sizeof(init_sequence); i++) uint8_t data = init_sequence[i]; // Send I2C data TWDR = (I2C_ADDRESS << 1)

int main() lcd_init(); lcd_print("Hello, World!"); return 0;