1.28-inch 240x240 resolution circular SPI LCD screen
The 1.28-inch 240x240 resolution circular SPI LCD screen is a display solution designed for compact and stylish devices, especially for wearable devices such as smart watches, fitness trackers, and other small electronic devices. This type of screen not only provides a clear information display platform, but also has the characteristics of low power consumption and easy integration, which is very suitable for battery-powered applications. Here is a more detailed introduction to this 1.28-inch 240x240 resolution circular SPI LCD screen:
Screen Features
Size and Resolution
Size: 1.28 inches diagonal length, suitable for applications that require compact design.
Resolution: 240x240 pixels, providing clearer text and image display effects, suitable for applications that require fine display.
Screen Shape
Circular Design: The screen itself is circular, which makes it very suitable for wearable devices or small portable devices with circular design, providing a better visual experience and stylish appearance.
Display Technology
TFT-LCD: Thin Film Transistor Liquid Crystal Display, ensuring good image quality, including bright colors and high contrast.
IPS panel (some models): uses IPS (In-Plane Switching) technology to provide wider viewing angles and more realistic color reproduction. IPS panels have better visual effects than TN (Twisted Nematic) panels, especially for users who need to view the screen from different angles. IPS technology improves color accuracy and consistency, making the image look more natural.
Interface type
SPI interface: Supports data transmission via the serial peripheral interface (SPI), which is a common communication method, especially suitable for resource-constrained microcontroller platforms. The SPI interface is known for its simplicity and efficient data transmission speed, which is very suitable for embedded system development.
Physical parameters
Active display area: For a circular screen with a resolution of 240x240, the active area is approximately 23.4mm in diameter.
Dimensions: The size of the entire module varies depending on the specific model, but is generally compact, such as about 36mm in diameter and 1.41mm thick or less.
Backlight control: The BLK pin can accept a PWM signal to adjust the brightness, thereby saving energy and extending battery life.
Power consumption characteristics
Low power consumption: Many 1.28-inch 240x240 resolution circular SPI LCD screens adopt a low power design, making them ideal for small devices that rely on battery power.
Application scenarios
Due to its compact size and appropriate resolution, the 1.28-inch 240x240 resolution circular SPI LCD screen is very suitable for the following fields:
Smart wearable devices: such as personal health monitoring instruments such as smart watches and bracelets.
Portable medical devices: such as small medical tools such as blood glucose meters and pulse oximeters.
Consumer electronics accessories: such as displays on headphones, remote controls, etc.
Industrial automation: small HMI (human-machine interface), sensor reading display, etc.
Selection suggestions
When choosing a specific 1.28-inch 240x240 resolution circular SPI LCD screen, please consider the following factors:
Performance requirements: Decide which display technology to choose (TN vs IPS) based on whether your project requires high refresh rate, full viewing angle or other special features. IPS panels have advantages in visual experience and are suitable for applications with high display quality requirements.
Interface compatibility: Confirm whether the SPI interface of the selected screen can be seamlessly connected with the existing microcontroller or main control board.
Power consumption considerations: Especially for battery-powered products, choosing a low-power screen can significantly extend the battery life.
Cost-effectiveness: Balance the relationship between budget constraints and required functional features to find the most cost-effective solution.
Example products
Waveshare 1.28-inch 240x240 circular SPI LCD screen: This screen has a 240x240 resolution, uses TFT-LCD technology, supports SPI interface, has 65,536 color display capabilities, and is suitable for a variety of embedded systems and smart wearable devices.
Adafruit 1.28-inch 240x240 circular TFT color display: This circular TFT display launched by Adafruit also has a 240x240 resolution, supports SPI interface, and has a built-in SD card slot for easy loading of pictures and fonts. It is also equipped with support for the Adafruit GFX graphics library, making programming easier, and is very suitable for DIY projects and individual developers.
1.28" 240x240 TFT Circular LCD Screen Driven by ST7789: This screen uses TFT technology, has a 240x240 resolution, supports SPI interface, and is suitable for a variety of embedded systems. It has rich colors and high contrast, suitable for smart watches, handheld devices and other applications that require high-quality display.
In addition, there are some specific 1.28" 240x240 resolution circular SPI LCD screens with touch screen function, which increases the possibility of user interaction and is suitable for devices that require touch operation. If you are looking for a 1.28" 240x240 resolution circular SPI LCD screen for a specific project, it is recommended to contact a professional supplier to obtain the latest product specifications and technical support. At the same time, considering that the specific parameters provided by different manufacturers may vary, it is very important to carefully compare the detailed information of each product. In addition, some suppliers may also provide customization services to help you better meet specific design needs.
Technical details and precautions
Driver chip: Most 1.28-inch 240x240 circular SPI LCD screens use a dedicated driver chip, such as ST7789, which supports 16-bit color depth in RGB 565 format, ensuring rich color performance.
Power management: In order to save power, the screen is usually equipped with a power management function, which can enter low-power mode or completely turn off the backlight when the display is not needed.
Initialization settings: Before use, the initialization parameters of the LCD screen need to be correctly configured to ensure the best display effect. This usually includes setting the screen direction, color mode, frame buffer, etc.
Programming interface: For LCD screens with SPI interface, it is usually necessary to write corresponding drivers to handle the SPI communication protocol and send commands and data to the LCD screen. Fortunately, many development boards (such as Arduino, Raspberry Pi, etc.) have ready-made libraries to help simplify this process.
