The specific model of this display is STONE STVC050WT-01, which communicates with MCU through UART, and will be covered in later chapters. But I want to use an LCD display, so I chose a 480×272 resolution serial LCD display. The demo program of the fingerprint module uses LED lights to prompt the user to enter the fingerprint and compare the status (success or failure). Since the fingerprint module manufacturer provides a demo program for STM32F103 series microcontrollers, I bought a small development board based on STM32F103C8T6. It supports fingerprint scanning, fingerprint entry, fingerprint comparison, and fingerprint deletion. This fingerprint module can be easily purchased online, connected over UART to an MCU board. However, I thought that since the fingerprint identification module had been purchased, I would simply test it. When I selected the fingerprint identification module, the project was suspended. This month, I planned to develop a fingerprint door lock project. CNXSoft: This is a guest post by Amy working for STONE Technology, a company specializing in industrial liquid crystal display modules