1. Introduktion
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 exampindholdet.
2. Nøglefunktioner
- Ingen baggrundslys: The display retains its content indefinitely without power, making it highly energy-efficient.
- Ultralavt strømforbrug: Power is primarily required only during content refresh cycles.
- SPI-grænseflade: Utilizes a Serial Peripheral Interface, requiring minimal I/O pins for communication.
- Udviklingsressourcer: Includes comprehensive development resources and a manual with Raspberry Pi Pico C/C++ and MicroPython examples.
- Direct Raspberry Pi Pico Attachment: Features an onboard female pin header for direct connection to a Raspberry Pi Pico.
Figur 2: Overview of the 2.13-inch E-Paper Module's features and specifications.
3. Tekniske specifikationer
| Feature | Værdi |
|---|---|
| Operation Voltage | 3.3V |
| Gråskala | 2 |
| Interface | 3-tråds SPI, 4-tråds SPI |
| Partial Refresh Time | 0.3'erne |
| Dispositionsdimensioner | 65.00 × 30.50 mm |
| Fuld opdateringstid | 2s |
| Skærmstørrelse | 48.55 × 23.70 mm |
| Refresh Power | 26.4mW (typ.) |
| Dot Pitch | 0.194 × 0.194 mm |
| Standby-strøm | <0.01uA (almost none) |
| Opløsning | 250×122 pixels |
| Viewi vinkel | >170° |
| Display farve | Sort, hvid |
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. Opsætning og tilslutning
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.
- Juster og forbind: 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.
- Strømforsyning: 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.
- Software opsætning: 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 Pinout Definition
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.
| Pin navn | Beskrivelse |
|---|---|
| VSYS | Strømindgang |
| GND | Jord |
| e-Paper_DC | Data/kommando-kontrolben (høj for data, lav for kommando) |
| e-Paper_CS | SPI chip select (low active) |
| e-Paper_CLK | SPI SCK-ben |
| e-Paper_DIN | SPI MOSI-pin |
| e-Paper_RST | External reset (low active) |
| e-Paper_BUSY | Busy status output |
5. Betjeningsvejledning
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.
- Installer biblioteker: Download and install any necessary libraries or drivers for your chosen programming language (e.g., MicroPython libraries for e-paper displays).
- Indlæs Eksample kode: 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.
- Tilpas indhold: 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 Ansøgning Eksamples
The E-Paper module is versatile and suitable for various applications due to its low power consumption and persistent display capabilities.
Figur 8: Eksamples of potential applications for the E-Paper module, such as price tags, shelf labels, and information displays in various environments.
6. Pleje og vedligeholdelse
To ensure the longevity and optimal performance of your Waveshare E-Paper display module, follow these maintenance guidelines:
- Håndteres med forsigtighed: E-paper displays are delicate. Avoid applying excessive pressure or bending the module, especially the flexible FPC cable.
- Rensning: 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.
- Miljøforhold: Operate and store the module within its specified temperature and humidity ranges. Avoid extreme temperatures, direct sunlight for prolonged periods, and high humidity.
- Strømstyring: While the display retains content without power, ensure proper power-down sequences for the Raspberry Pi Pico to prevent data corruption or unexpected behavior.
- Statisk elektricitet: Take precautions against electrostatic discharge (ESD) when handling the module, as electronic components can be sensitive to static.
7. Fejlfinding
If you encounter issues with your E-Paper display module, consider the following troubleshooting steps:
- Display Not Refreshing/Blank:
- 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 eller billedretention:
- 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.
- Forkert skærmretning:
- 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. Support og garanti
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.
Fabrikant: Waveshare
Webwebsted: 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.
