// FOR PROTEUS JHD2x16: // Usually, Proteus JHD2x16 uses address 0x76 (or 0x7E). // If you use a standard "Arduino I2C LCD" component in Proteus, use 0x27. // Change this address if the screen stays blank! #define I2C_ADDR 0x76
A common "deep" issue is the hex address. While real hardware might use 0x3F , Proteus simulation models often default to 0x20 or 0x27 . Key Components for Simulation jhd2x16i2c proteus exclusive