1. บทนำ
This manual provides detailed instructions for the Waveshare 2.13-inch E-Paper E-Ink Display Module (Model: Pico-ePaper-2.13). This module is designed for use with the Raspberry Pi Pico, offering a low-power, partial refresh display solution. E-paper displays are known for their paper-like effect and ability to retain content without continuous power.
Figure 1: Waveshare 2.13-inch E-Paper Display Module displaying exampเนื้อหา
2. คุณสมบัติหลัก
- ไม่มีแสงไฟ: The display retains its content indefinitely without power, making it highly energy-efficient.
- การใช้พลังงานต่ำเป็นพิเศษ: Power is primarily required only during content refresh cycles.
- อินเทอร์เฟซ SPI: Utilizes a Serial Peripheral Interface, requiring minimal I/O pins for communication.
- Development Resources: Includes comprehensive development resources and a manual with Raspberry Pi Pico C/C++ and MicroPython exampเลส.
- Direct Raspberry Pi Pico Attachment: Features an onboard female pin header for direct connection to a Raspberry Pi Pico.
รูปที่ 2: เกินview of the 2.13-inch E-Paper Module's features and specifications.
3. ข้อมูลจำเพาะทางเทคนิค
| คุณสมบัติ | ค่า |
|---|---|
| ปฏิบัติการฉบับที่tage | 3.3โวลต์ |
| ระดับสีเทา | 2 |
| อินเทอร์เฟซ | SPI 3 สาย, SPI 4 สาย |
| เวลารีเฟรชบางส่วน | 0.3วินาที |
| ขนาดโครงร่าง | 65.00 × 30.50 มม |
| เวลารีเฟรชเต็ม | 2s |
| ขนาดจอแสดงผล | 48.55 × 23.70 มม |
| รีเฟรชพลัง | 26.4mW (ทั่วไป) |
| dot pitch | 0.194 × 0.194 มม |
| กระแสไฟสแตนด์บาย | <0.01 ไมโครแอมป์ (แทบไม่มีเลย) |
| ปณิธาน | 250×122 พิกเซล |
| Viewอิงแองเกิล | >170° |
| สีจอแสดงผล | สีดำ, สีขาว |
Figure 3: Detailed technical specifications of the E-Paper module.
Figure 4: Outline dimensions of the 2.13-inch E-Paper module in millimeters.
4. การตั้งค่าและการเชื่อมต่อ
The Waveshare Pico-ePaper-2.13 module is designed for direct attachment to a Raspberry Pi Pico. Follow these steps for proper setup:
- Prepare Raspberry Pi Pico: Ensure your Raspberry Pi Pico is ready for use, with necessary firmware or operating system installed if required for your project.
- จัดแนวและเชื่อมต่อ: Carefully align the female pin header on the E-Paper module with the male pins on your Raspberry Pi Pico. Gently press them together until fully seated. Ensure correct orientation to prevent damage.
- แหล่งจ่ายไฟ: Once connected, power the Raspberry Pi Pico via its USB port or other designated power input. The E-Paper module draws power directly from the Pico.
- การตั้งค่าซอฟต์แวร์: Refer to the provided development resources for specific C/C++ or MicroPython examples to initialize and control the display. This typically involves configuring the SPI interface on the Pico.
Figure 5: Raspberry Pi Pico securely connected to the E-Paper module. Note: Raspberry Pi Pico is not included with the display module.
Figure 6: Raspberry Pi Pico with E-Paper module connected and powered via USB. Note: Raspberry Pi Pico is not included with the display module.
4.1 คำจำกัดความของตำแหน่งขาเชื่อมต่อ
Understanding the pinout is crucial for advanced configurations or troubleshooting. The module uses an SPI interface.
Figure 7: Pinout definition for the Waveshare Pico-ePaper-2.13 module, showing connections for SPI, power, and control pins.
| ชื่อพิน | คำอธิบาย |
|---|---|
| วีเอสวายเอส | กำลังไฟเข้า |
| ก.ย.ด. | พื้น |
| e-Paper_DC | พินควบคุมข้อมูล/คำสั่ง (สูงสำหรับข้อมูล ต่ำสำหรับคำสั่ง) |
| e-Paper_CS | SPI chip select (low active) |
| e-Paper_CLK | พิน SPI SCK |
| e-Paper_DIN | พิน SPI MOSI |
| e-Paper_RST | External reset (low active) |
| e-Paper_BUSY | Busy status output |
5. คู่มือการใช้งาน
Operating the Waveshare 2.13-inch E-Paper module involves programming your Raspberry Pi Pico to send display data via the SPI interface. Waveshare provides example code and libraries to facilitate this process.
5.1 Programming the Display
- Access Development Resources: Visit the official Waveshare product page or documentation portal for the Pico-ePaper-2.13 module. Here you will find example code in C/C++ and MicroPython.
- ติดตั้งไลบรารี: Download and install any necessary libraries or drivers for your chosen programming language (e.g., MicroPython libraries for e-paper displays).
- โหลดตัวอย่างampรหัส: Upload the provided example code to your Raspberry Pi Pico. These examples typically demonstrate basic functions like displaying text, images, or performing partial/full refreshes.
- ปรับแต่งเนื้อหา: Modify the example code to display your desired content. Pay attention to the display resolution (250x122 pixels) and color depth (black/white, 2 grey scales).
- Refresh Cycles: Understand the difference between full refresh (approx. 2 seconds) and partial refresh (approx. 0.3 seconds). Partial refresh is faster and consumes less power but may leave ghosting artifacts over time, requiring an occasional full refresh.
5.2 ใบสมัครเช่นampเลส
The E-Paper module is versatile and suitable for various applications due to its low power consumption and persistent display capabilities.
รูปที่ 8: อดีตamples of potential applications for the E-Paper module, such as price tags, shelf labels, and information displays in various environments.
6. การดูแลรักษา
To ensure the longevity and optimal performance of your Waveshare E-Paper display module, follow these maintenance guidelines:
- จัดการด้วยความระมัดระวัง: E-paper displays are delicate. Avoid applying excessive pressure or bending the module, especially the flexible FPC cable.
- การทำความสะอาด: Use a soft, dry, lint-free cloth to gently wipe the display surface. Do not use liquid cleaners, solvents, or abrasive materials, as these can damage the screen.
- สภาพแวดล้อม : Operate and store the module within its specified temperature and humidity ranges. Avoid extreme temperatures, direct sunlight for prolonged periods, and high humidity.
- การจัดการพลังงาน: While the display retains content without power, ensure proper power-down sequences for the Raspberry Pi Pico to prevent data corruption or unexpected behavior.
- ไฟฟ้าสถิต: Take precautions against electrostatic discharge (ESD) when handling the module, as electronic components can be sensitive to static.
7 การแก้ไขปัญหา
If you encounter issues with your E-Paper display module, consider the following troubleshooting steps:
- หน้าจอไม่รีเฟรช/ว่างเปล่า:
- Check all connections between the E-Paper module and the Raspberry Pi Pico. Ensure they are secure and correctly oriented.
- Verify the power supply to the Raspberry Pi Pico.
- Review your code for display initialization and refresh commands. Ensure the SPI interface is correctly configured.
- Confirm that the correct libraries for the Pico-ePaper-2.13 are installed and imported in your code.
- Ghosting or Image Retention:
- Ghosting is common with partial refreshes. Perform a full refresh periodically to clear the display completely.
- Ensure your refresh cycles are correctly implemented in your code.
- การวางแนวหน้าจอไม่ถูกต้อง:
- The display typically operates in portrait mode by default. If you require landscape orientation, check if your chosen library or example code supports rotation and how to implement it.
- Module Not Detected by Pico:
- Double-check the pin connections against the pinout diagram (Figure 7).
- Ensure the Raspberry Pi Pico is functioning correctly independently.
For further assistance, refer to the official Waveshare documentation and community forums.
8. การสนับสนุนและการรับประกัน
For technical support, additional resources, and the latest documentation, please visit the official Waveshare website. You can typically find detailed product wikis, example code, and community forums there.
ผู้ผลิต: เวฟแชร์
Webเว็บไซต์: www.waveshare.com
Information regarding product warranty is typically available on the Waveshare website or included with your purchase documentation. Please retain your proof of purchase for warranty claims.
