สินค้าเกินview
The Waveshare 2.9inch E-Ink Raw Display is a low-power, high-resolution display module designed for various embedded applications. It features a 296x128 pixel resolution and communicates via an SPI interface. This display is particularly suitable for applications requiring ultra-low power consumption and clear readability without a backlight.
Figure 1: Waveshare 2.9inch E-Ink Raw Display Module.
ภาพนี้แสดงด้านหน้า view of the 2.9-inch e-Paper module, highlighting its 296x128 pixel resolution and support for black and white color with 4 gray scales. The flexible printed circuit (FPC) cable is visible on the left side.
คุณสมบัติหลัก
- ประเภทจอภาพ: E-Ink raw display, 2.9inch.
- ปณิธาน: 296x128 pixels.
- อินเทอร์เฟซ: SPI (Serial Peripheral Interface).
- รีเฟรช: Supports partial refresh.
- การใช้พลังงาน: Ultra-low power, primarily required only for refreshing.
- แสงไฟด้านหลัง: No backlight, retains content display even when powered down.
- Viewอิงมุม: กว้าง viewing angle, clear display without electricity.
- ความเข้ากันได้: Compatible with Raspberry Pi, Jetson Nano, Arduino, and STM32 series boards.
การตั้งค่าและการเชื่อมต่อ
This 2.9inch E-Ink display is a raw panel and requires a driver board for operation. It communicates via SPI, making it compatible with various microcontrollers and single-board computers.
การเชื่อมต่อจอภาพ
The display connects to a compatible driver board or development board (e.g., Raspberry Pi, Arduino) via its flexible printed circuit (FPC) cable. Ensure correct pin alignment and secure connection to prevent damage.
- Identify the SPI pins on your development board (MOSI, MISO, SCK, CS, DC, RST, BUSY).
- Connect the FPC cable from the e-Paper display to the corresponding connector on your driver board.
- Ensure the power supply (typically 3.3V) is correctly connected.
Figure 2: Key specifications and features of the 2.9inch e-Paper display.
This diagram illustrates the physical and functional characteristics of the e-Paper display, including its dimensions, resolution, viewing angle, and communication protocol (SPI).
Driver Board Solutions
As this is a raw display, a separate driver board is necessary. Waveshare offers various compatible driver solutions:
- 2.9inch e-Paper with driver board (module)
- Universal e-Paper Raw Panel Driver HAT (for Raspberry Pi)
- Universal e-Paper Raw Panel Driver Board, ESP32 WiFi / Bluetooth Wireless
- Universal e-Paper Raw Panel Driver Board, ESP8266 WiFi Wireless
- Universal e-Paper Raw Panel Driver Shield for Arduino / NUCLEO
Figure 3: Recommended driver board solutions for the raw display.
This image provides a visual guide to the different driver board options available for integrating the 2.9inch e-Paper raw display into various projects.
การใช้งานจอแสดงผล
The e-Paper display operates by changing the position of charged particles within microcapsules, reflecting ambient light to form images. This technology allows for clear display without power consumption once an image is rendered.
การรีเฟรชการแสดงผล
The display supports both full and partial refresh modes. Full refresh clears the entire screen and redraws the content, while partial refresh updates only specific areas, which is faster and consumes less power for minor changes.
- Full Refresh Time: ประมาณ 3 วินาที
- Partial Refresh Time: ประมาณ 0.6 วินาที
รูปที่ 4: Advantages of E-Ink technology and application exampเลส.
This image highlights the superior readability of E-Ink displays compared to traditional LCD monitors, resembling printed paper. It also showcases common applications such as retail shelf labels and industrial instruments.
Programming and Libraries
Waveshare provides online development resources and example code for various platforms, including Raspberry Pi, Jetson Nano, Arduino, and STM32. These resources typically include libraries and sample programs to help you get started with displaying text and graphics.
It is recommended to consult the official Waveshare Wiki for detailed programming guides and up-to-date examples. A link to the user guide is provided in the Support section.
การบำรุงรักษาและการดูแล
The 2.9inch E-Ink Raw Display is a delicate electronic component. Proper handling and care will ensure its longevity and optimal performance.
การดูแลทั่วไป
- ความเปราะบาง: Handle the display with care, especially the glass panel and the flexible FPC cable, as they are susceptible to damage from bending or impact.
- การทำความสะอาด: Use a soft, dry, lint-free cloth to gently wipe the display surface if necessary. Avoid using liquid cleaners or abrasive materials.
- ไฟฟ้าสถิต: Take precautions against electrostatic discharge (ESD) when handling the display, as static can damage electronic components.
- พื้นที่จัดเก็บ: Store the display in a cool, dry environment, away from direct sunlight and extreme temperatures.
Figure 5: Product packaging with handling and recycling information.
The product box includes important warnings regarding static electricity and proper disposal/recycling of the electronic device.
การแก้ไขปัญหา
If you encounter issues with your Waveshare 2.9inch E-Ink Raw Display, consider the following common troubleshooting steps:
- ไม่มีจอแสดงผล/หน้าจอว่าง:
- Verify all connections, especially the FPC cable to the driver board, are secure and correctly oriented.
- Ensure the power supply (3.3V) is stable and correctly connected.
- Check your code for initialization errors or incorrect SPI communication settings.
- Incomplete or Garbled Display:
- Confirm that the display resolution (296x128) in your code matches the physical display.
- Ensure the correct display driver library is being used for this specific 2.9inch model.
- Try a full refresh cycle to clear any residual images.
- อัตราการรีเฟรชช้า:
- E-Ink displays inherently have slower refresh rates than LCDs. Refer to the specifications for expected refresh times.
- Utilize partial refresh for minor updates to improve perceived speed.
- Ghosting/Image Retention:
- This is a characteristic of e-Ink technology. A full refresh cycle can often mitigate ghosting.
- Ensure your driver code implements proper refresh sequences.
For more detailed troubleshooting and specific error codes, refer to the online user manual and Waveshare's official documentation and forums.
ข้อมูลจำเพาะ
Detailed technical specifications for the Waveshare 2.9inch E-Ink Raw Display:
Figure 6: Detailed specifications of the 2.9inch e-Paper display.
This image provides a comprehensive table of the display's electrical and physical characteristics, including refresh rates and power consumption.
| คุณลักษณะ | ค่า |
|---|---|
| ขนาดหน้าจอยืน | 2.9 นิ้ว |
| ยี่ห้อ | เวฟแชร์ |
| หมายเลขรุ่นสินค้า | กระดาษอิเล็กทรอนิกส์ขนาด 2.9 นิ้ว |
| ความเข้ากันได้ของระบบปฏิบัติการ | ลินุกซ์ |
| น้ำหนักสินค้า | 0.352 ออนซ์ |
| ขนาดสินค้า (กxยxส) | 7.09 x 3.94 x 3.54 นิ้ว |
| เทคโนโลยีการเชื่อมต่อ | เอสพีไอ |
| อุปกรณ์ที่รองรับ | Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W/WH/Zero 2W Series Boards, Jetson Nano |
การรับประกันและการสนับสนุน
Waveshare products are designed for reliability and performance. For specific warranty information, please refer to the terms and conditions provided at the time of purchase or contact Waveshare directly.
แหล่งข้อมูลออนไลน์
Waveshare provides extensive online resources to assist users with their products:
- คู่มือผู้ใช้ (PDF): For detailed technical documentation and programming examples, please refer to the official user guide: Waveshare 2.9inch E-Ink User Guide
- ร้านค้า Waveshare: Explore other Waveshare products and resources on their official Amazon store: Waveshare Amazon Store
- การสนับสนุนด้านเทคนิค: For technical inquiries or assistance, please visit the Waveshare official website or contact their support channels as listed in the product documentation.
