Glass Unit is a transparent OLED expansion screen unit with a size of 1.51 inches. It is designed to provide a monochrome display with a resolution of 128x64 pixels. The transparent area of the screen measures 128x56 pixels, allowing for creative integration with other components or surfaces.Glass Unit utilizes the STM32+SSD1309 driver scheme for efficient control and operation. The microcontroller unit (MCU) employed is the STM32F030F4P6, which not only drives the display but also integrates two input buttons and a buzzer, enabling user interaction and feedback.The communication interface for control and firmware upgrades is I2C, with the module’s address set to 0x3C. This facilitates easy integration and control of the transparent OLED screen extension. Glass Unit is well-suited for embedding in various home products or control devices as a display panel. Its transparent nature allows for unique visual effects and integration possibilities. With its compact size and versatile features, it can enhance the user experience and provide valuable information in different applications.