1. හැඳින්වීම
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. විශේෂාංග
- පසුතල ආලෝකය නැත: The display retains its content indefinitely without power, offering excellent readability in ambient light.
- අතිශය අඩු බල පරිභෝජනය: Power is primarily required only during display refreshes.
- SPI Interface: Compatible with a wide range of controller boards including Raspberry Pi, Jetson Nano, Arduino, and STM32.
- ඔන්බෝඩ් වෙළුමtage 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. පැකේජ අන්තර්ගතය
ඔබගේ පැකේජයේ සියලුම අයිතම ඇති බව තහවුරු කරගන්න:
- 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. පිරිවිතර
| පරාමිතිය | වටිනාකම |
|---|---|
| මෙහෙයුම් වෙළුමtage | 3.3V / 5V |
| අතුරු මුහුණත | 3-වයර් SPI, 4-වයර් SPI |
| දළ සටහන් මානයන් | 37.0 × 83.5 මි.මී. |
| සංදර්ශක ප්රමාණය | 30.704 × 60.088 මි.මී. |
| තිත තණතීරුව | 0.202 × 0.203 මි.මී. |
| විභේදනය | 296 × 152 පික්සල |
| සංදර්ශක වර්ණය | කළු, සුදු |
| අළු පරිමාණය | 2 |
| Partial Refresh Time | 0.3s |
| Full Refresh Time | 6s |
| Refresh Power | 42.4mW (වර්ගය.) |
| පොරොත්තු ධාරාව | <0.01uA (almost none) |
| Viewing කෝණය | >170° |
Image 4.1: A visual summary of the technical specifications for the e-Paper module.
5. පිහිටුවීම සහ සම්බන්ධ කිරීම
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.
| පින් කරන්න | විස්තරය |
|---|---|
| VCC | 3.3V / 5V Power Supply |
| GND | බිම |
| 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 |
| කාර්යබහුලයි | Busy status output, active high |
රූපය 5.1: විස්තරාත්මක view of the module's pinout for SPI communication.
5.2 වෙළුමtagඊ පරිවර්තක
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 Connecting to a Microcontroller
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.
වැදගත්: Always double-check your wiring against the provided schematics to prevent damage to the module or your microcontroller.
6. මෙහෙයුම් උපදෙස්
6.1 අන්තර්ගතය පෙන්වීම
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. අයදුම්පතamples
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
- කාලගුණ මධ්යස්ථාන
- Information displays for public spaces
- E-readers and portable devices
රූපය 7.1: උදාamples of how the e-Paper module can be used in various settings, such as retail, industrial, and informational displays.
8. නඩත්තු කිරීම
To ensure the longevity and optimal performance of your e-Paper display module, follow these maintenance guidelines:
- හැසිරවීම: Avoid applying excessive pressure or bending the display panel. Handle the module by its edges.
- පිරිසිදු කිරීම: Use a soft, dry, lint-free cloth to gently wipe the display surface. Do not use abrasive cleaners or solvents.
- පරිසරය: Store and operate the module within its specified temperature and humidity ranges. Avoid direct sunlight for prolonged periods and extreme temperatures.
- ස්ථිති විද්යුතය: E-paper displays are sensitive to static electricity. Take appropriate ESD precautions when handling the module.
9. දෝශ නිරාකරණය
- 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.
- සංදර්ශක ප්රතිදානයක් නැත:
- Double-check all wiring, especially the SPI data lines (DIN, CLK, CS, DC, RST).
- නිවැරදි වෙළුම බව තහවුරු කරන්නtage (3.3V or 5V) is supplied to VCC.
- Ensure your microcontroller's SPI interface is correctly configured and enabled.
10 සහාය සහ සම්පත්
For further technical support, detailed documentation, and example code, please refer to the official Waveshare resources.
- මාර්ගගත පරිශීලක අත්පොත (PDF): PDF බාගන්න
- Waveshare Wiki: Visit the Waveshare official wiki for comprehensive tutorials, schematics, and code examples for various platforms.
11. වගකීම් තොරතුරු
Waveshare products typically come with a standard manufacturer's warranty. Please refer to the official Waveshare website or your purchase documentation for specific warranty terms and conditions. Keep your proof of purchase for warranty claims.
