1. 12864 Monochrome LCD Screen Upgrade To STONE Smart LCD Module

The basic control frame will remain the same.
The communication between the main control unit and the STONE TFT module adopts serial communication, and the control board only needs to reserve one UART port without occupying the I/O port resources of the microcontroller.
Functional module
Controller + 4*4 matrix keyboard + STONE TFT module + gate drive circuit

Recommended module

STWI070WN-01 7 inches TFT module with KAP02 matrix keypad interface

2. Traditional LCD Monochrome Screen + Matrix Keyboard Upgraded To Divine Color Touch Screen

The 4*4 matrix keyboard is omitted and replaced with a resistive touch TFT module, which brings a better human-machine interfacing experience.
The communication between the main control chip and the STONE TFT module adopts serial communication, and the control board only needs to reserve one UART port without occupying the I/O port resources of the microcontroller. UI development is completed in the STONE TOOL GUI design system independently. The graphical programming interface is powerful and easy to operate.

Recommended module

STWI070WT-01 7 inches TFT module with resistive touch panel