| Feature | Generic I2C LCD (e.g., LM044L) | JHD2x16i2c Proteus Exclusive | | :--- | :--- | :--- | | | Approximate (often uses virtual backpack) | Exact to JHD physical module | | I2C Address Flexibility | Fixed or generic config | Adjustable via properties (0x20 to 0x27) | | Backlight simulation | On/Off only | PWM dimming simulation (if connected) | | CGRAM support | Partial | Full (bit-accurate) | | Typical Use Case | Quick educational demos | Production firmware validation |
Most Arduino I2C libraries (like the famous LiquidCrystal_I2C by Frank de Brabander) look for a specific I2C address and bit-shifting logic. The Proteus JHD2x16 model has default settings that don't always match the "plug-and-play" expectations of Arduino libraries. jhd2x16i2c proteus exclusive