An analysis of the problems of developing graphic screens with an original design for STM32 microcontrollers without a built-in graphics accelerator was carried out. The analysis of the electronics development companies requirements for projects with built-in visualization in electronic devices has been carried out. A comparative analysis of the Nextion displays characteristics and industrial operator panels was carried out. The capabilities of Nextion displays were studied: the speed of loading images from flash memory and displaying these images on the screen, the time it took to develop screens, the speed of data exchange between the display and the microcontroller. A comparative analysis was carried out between identical projects created for the Nextion display in the Nextion Editor environment and a display for which there is no specialized GUI development environment. The effectiveness of using Nextion displays for high-quality visualization of the device state and systems designed on the STM32 microcontrollers has been proven.