1. Introducció
This manual provides comprehensive instructions for the Waveshare 2.66-inch E-Paper Display Module. This module features a 296x152 pixel resolution, black and white dual-color display, and utilizes an SPI interface for connection with various microcontrollers and development boards such as Raspberry Pi, Jetson Nano, Arduino, and STM32. Its key advantages include ultra-low power consumption and the ability to retain displayed content without continuous power, making it ideal for applications requiring static information display.
Image 1.1: The Waveshare 2.66-inch E-Paper Display Module, showcasing its compact design and display area.
2. Característiques
- Sense llum de fons: The display retains its content indefinitely without power, offering excellent readability in ambient light.
- Ultra-Low Power Consumption: Power is primarily required only during display refreshes.
- Interfície SPI: Compatible with a wide range of controller boards including Raspberry Pi, Jetson Nano, Arduino, and STM32.
- A bord Voltage Translator: Ensures compatibility with both 3.3V and 5V microcontrollers.
- Partial Refresh Support: Allows for efficient updates of specific screen areas, reducing refresh time and power usage.
Image 2.1: Visual representation of the key features and characteristics of the 2.66-inch e-Paper module.
3. Contingut del paquet
Verifiqueu que tots els elements siguin presents al vostre paquet:
- Waveshare 2.66-inch E-Paper Display Module
- Connecting Cable (e.g., DuPont wires for SPI connection)
Image 3.1: The e-Paper module and its accompanying connection cable included in the package.
4. Especificacions
| Paràmetre | Valor |
|---|---|
| Vol. Operatiutage | 3.3V / 5V |
| Interfície | SPI de 3 fils, SPI de 4 fils |
| Dimensions del contorn | 37.0 × 83.5 mm |
| Mida de la pantalla | 30.704 × 60.088 mm |
| Mida de punt | 0.202 × 0.203 mm |
| Resolució | 296 × 152 píxels |
| Color de la pantalla | Negre, Blanc |
| Escala de grisos | 2 |
| Partial Refresh Time | 0.3 s |
| Full Refresh Time | 6s |
| Refresh Power | 42.4 mW (típ.) |
| Corrent d'espera | <0.01uA (almost none) |
| Viewangle ing | >170° |
Image 4.1: A visual summary of the technical specifications for the e-Paper module.
5. Configuració i connexió
5.1 Pinout and SPI Interface
The module communicates via a Serial Peripheral Interface (SPI). It supports both 3-wire and 4-wire SPI configurations. The onboard voltage translator ensures compatibility with both 3.3V and 5V logic levels, eliminating the need for external level shifters when connecting to different microcontrollers.
| Pin | Descripció |
|---|---|
| VCC | 3.3V / 5V Power Supply |
| GND | Terra |
| DIN | SPI MOSI pin (Master Out Slave In) |
| CLK | SPI SCK pin (Serial Clock) |
| CS | SPI Chip Select, active low |
| DC | Data / Command selection (High for data, Low for command) |
| RST | External Reset, active low |
| OCUPAT | Busy status output, active high |
Imatge 5.1: Detallada view of the module's pinout for SPI communication.
5.2 voltage Traductor
The module integrates a voltage translator, making it compatible with both 3.3V and 5V logic levels. Connect the VCC pin to the appropriate power supply (3.3V or 5V) of your microcontroller. The module will automatically adjust its logic levels.
Image 5.2: Illustration highlighting the onboard voltage translator for flexible power compatibility.
5.3 Connexió a un microcontrolador
Refer to the specific documentation and example code provided by Waveshare for your chosen microcontroller (Raspberry Pi, Jetson Nano, Arduino, STM32). Generally, you will connect the SPI pins (DIN, CLK, CS, DC, RST, BUSY) from the e-Paper module to the corresponding SPI pins on your development board, along with VCC and GND.
Important: Always double-check your wiring against the provided schematics to prevent damage to the module or your microcontroller.
6. Instruccions de funcionament
6.1 Visualització de contingut
The e-Paper display operates by arranging charged particles to form an image. Once an image is displayed, it remains visible even when power is removed. To change the content, a refresh cycle is initiated.
Image 6.1: The e-Paper module displaying a sample graphic, demonstrating its black and white rendering capability.
6.2 Full Refresh vs. Partial Refresh
- Full Refresh: Clears the entire screen and redraws the new content. This process typically takes longer (approx. 6 seconds) and consumes more power but ensures a clean display without ghosting.
- Partial Refresh: Updates only a specific area of the screen. This is significantly faster (approx. 0.3 seconds) and uses less power, making it suitable for frequently changing small elements like clocks or sensor readings. However, repeated partial refreshes over time may lead to minor ghosting, which can be cleared with a full refresh.
Utilize the provided software libraries and examples to implement both full and partial refresh functionalities in your projects.
7. Aplicació Examples
The Waveshare 2.66-inch E-Paper Display Module is versatile and can be integrated into various projects due to its low power consumption and clear readability. Common applications include:
- Electronic shelf labels
- Industrial instruments and control panels
- Smart home displays
- Estacions meteorològiques
- Information displays for public spaces
- E-readers and portable devices
Imatge 7.1: Ex.amples of how the e-Paper module can be used in various settings, such as retail, industrial, and informational displays.
8. Manteniment
To ensure the longevity and optimal performance of your e-Paper display module, follow these maintenance guidelines:
- Manipulació: Avoid applying excessive pressure or bending the display panel. Handle the module by its edges.
- Neteja: Use a soft, dry, lint-free cloth to gently wipe the display surface. Do not use abrasive cleaners or solvents.
- Medi ambient: Store and operate the module within its specified temperature and humidity ranges. Avoid direct sunlight for prolonged periods and extreme temperatures.
- Electricitat estàtica: E-paper displays are sensitive to static electricity. Take appropriate ESD precautions when handling the module.
9. Solució De Problemes
- Display Not Refreshing:
- Check all power and SPI connections. Ensure VCC and GND are correctly supplied.
- Verify that the BUSY pin is being monitored in your code. The display cannot accept new commands while busy.
- Confirm that your code initializes the display correctly and sends the appropriate refresh commands.
- Ghosting or Incomplete Display:
- Perform a full refresh. This often resolves ghosting issues that can accumulate from repeated partial refreshes.
- Ensure the power supply is stable and sufficient during refresh cycles.
- Sense sortida de pantalla:
- Double-check all wiring, especially the SPI data lines (DIN, CLK, CS, DC, RST).
- Comproveu que el vol correctetage (3.3V or 5V) is supplied to VCC.
- Ensure your microcontroller's SPI interface is correctly configured and enabled.
10. Suport i Recursos
For further technical support, detailed documentation, and example code, please refer to the official Waveshare resources.
- Manual d'usuari en línia (PDF): Descarregar PDF
- Waveshare Wiki: Visit the Waveshare official wiki for comprehensive tutorials, schematics, and code examples for various platforms.
11. Informació de la garantia
Waveshare products typically come with a standard manufacturer's warranty. Please refer to the official Waveshare weblloc web o la documentació de compra per conèixer els termes i condicions específics de la garantia. Conserveu el comprovant de compra per a les reclamacions de garantia.
