If you need a genuinely free alternative for I²C LCD simulation, consider using with a behavioural model of the LCD, or online simulators like Wokwi and Tinkercad – although they may not include the exact JHD2X16I2C part.
No need to buy the hardware before testing the code. jhd2x16i2c proteus free
Since you want a method, you have two options. I recommend Option 2 for long-term reliability. If you need a genuinely free alternative for
or AMPIRE16X2 : The standard 16x2 alphanumeric LCD display matrix. PCF8574 : The 8-bit I/O expander for I2C bus communication. ATMEGA328P or ARDUINO UNO : Your target microcontroller. Step 2: Schematic Circuit Wiring jhd2x16i2c proteus free