but since this post is about “interfacing an arduino with a serial lcd controller”, i’m quite disappointed. old lcd panels in my junk box: 4. lcd panels with serial controller: none.

Instead, a virtual version of the hardware has been built into a web interface. [Tobie’s] part of the hack is to use an Arduino and a few buttons as the controller.

All remaining connections of the 16×2 Character LCD are solely reserved for the microcontroller interface. 16×2 Character LCD & Arduino. ... Instead of a new wheel around, this time we are focusing ...

To link a standard 16×2 LCD directly with the microcontroller, for instance Arduino, you would need atleast 6 I/O pins to talk to the LCD. However, if you use an LCD module with I2C interface, you ...