: Some JHD modules use different controllers. If the standard library fails, use the DF Robot LCD Point H library. Example Code (Proteus Compatible)

Characters not Appearing: Double-check the I2C address. If 0x27 doesn't work, try 0x3F.

: In simulation, the I2C address is often set to 0x20 or 0x27 . Use a Virtual Terminal in Proteus to verify the address if your code isn't communicating. Software Compatibility

Traditional 16x2 LCDs (like the LM016L) require a bulky parallel interface JHD2X16I2C integrates the

library for this specific controller to avoid configuration errors. I2C Addressing