1. ઉત્પાદન ઓવરview
The Waveshare 2.13inch E-Ink Display HAT V4 is a low-power, two-color (black and white) e-paper screen module designed for various embedded applications. It features a 250x122 resolution and communicates via an SPI interface. This HAT (Hardware Attached on Top) is compatible with Raspberry Pi series boards (including Zero/Zero W/Zero WH/2B/3B/3B+/4B) and Jetson Nano. Its key advantages include ultra-low power consumption, wide viewing angles, and the ability to retain displayed content without continuous power, making it suitable for applications like electronic shelf labels and industrial instrumentation.
Image 1.1: The 2.13inch E-Ink Display HAT V4 module with included accessories.
2. પેકેજ સામગ્રી
- 2.13inch e-Paper HAT x1
- RPi screws pack (2pcs) x1
- PH2.0 20cm 8Pin cable x1
3. સ્પષ્ટીકરણો
| લક્ષણ | વર્ણન |
|---|---|
| સંચાલન ભાગtage | 3.3V / 5V |
| ઈન્ટરફેસ | SPI |
| રૂપરેખા પરિમાણ | 65mm × 30.2mm |
| ડિસ્પ્લે માપ | 23.71mm × 48.55mm |
| ડોટ પિચ | 0.194 × 0.194 |
| ઠરાવ | 250 × 122 પિક્સેલ્સ |
| ડિસ્પ્લે રંગ | કાળો, સફેદ |
| ગ્રે લેવલ | 2 |
| Partial Refresh Time | 0.3 સે |
| Full Refresh Time | 2s |
| Refresh Power | 26.4mW (typical) |
| સ્ટેન્ડબાય પાવર | <0.017mW |
| Viewએન્ગલ | >170° |
Image 3.1: Detailed specifications of the 2.13inch E-Ink Display HAT V4.
4. Setup & Hardware Connection
4.1 Connecting to Raspberry Pi
The 2.13inch E-Ink Display HAT V4 is designed to directly connect to the 40-pin GPIO header of Raspberry Pi boards. Ensure proper alignment of the pins before pressing the HAT onto the Raspberry Pi. The module includes an onboard voltage translator, making it compatible with both 3.3V and 5V MCUs.
Image 4.1: The 2.13inch E-Ink Display HAT V4 connected to a Raspberry Pi Zero.
Image 4.2: Hardware connection tables for various platforms including Raspberry Pi, Arduino, Jetson Nano, and STM32.
4.2 SPI Interface Pinout
The module communicates via the Serial Peripheral Interface (SPI). Below is the pinout for the SPI interface:
| પિન | કાર્ય |
|---|---|
| વીસીસી | 3.3V / 5V Power Supply |
| જીએનડી | જમીન |
| ડીઆઈએન | SPI MOSI (Master Out Slave In) |
| સીએલકે | SPI SCK (Serial Clock) |
| CS | SPI Chip Select (Low active) |
| DC | Data/Command Control Pin (High for data, Low for command) |
| આરએસટી | External Reset Pin (Low for reset) |
| વ્યસ્ત | Busy State Output Pin (Low for busy) |
Image 4.3: Pinout and interface details for the 2.13inch E-Ink Display HAT V4.
5. Operating Principles: Advantages of E-Ink Displays
E-Ink displays, also known as e-paper, utilize microcapsule electrophoresis technology. This technology involves charged nanoparticles suspended in a liquid that migrate under the action of an electric field, forming a display that closely resembles traditional printed paper. The primary advantages of e-ink screens include:
- અતિ-નીચું વીજ વપરાશ: Power is primarily consumed only during display refreshes, not for maintaining a static image.
- કોઈ બેકલાઇટ નથી: E-Ink displays are reflective, relying on ambient light, which makes them easy on the eyes and visible in bright conditions.
- Persistent Display: Content remains visible for extended periods even when power is removed.
- પહોળી Viewએન્ગલ: ઓફર કરે છે a viewing angle greater than 170 degrees, similar to paper.
Image 5.1: Visual comparison highlighting the paper-like effect of E-Ink displays.
6. Software & Development Resources
Waveshare provides comprehensive online development resources and user manuals to assist with quick setup and programming. These resources typically include:
- Driver board schematics
- User manuals with detailed instructions
- Demo code and examples for Raspberry Pi, Arduino, and STM32
- Libraries and API documentation
For access to these resources, please refer to the official Waveshare product page or contact their support.
6.1 Introduction Video
Video 6.1: An introductory video showcasing the features and basic operation of the 2.13inch E-Paper HAT+ for Raspberry Pi, highlighting its low power consumption and compatibility.
Video 6.2: A video demonstrating the 2.13inch E-Ink display HAT, its partial refresh capabilities, and its use with Raspberry Pi and Jetson Nano.
વિડિઓ ૫.૪.૨: એક જનરલ ઓવરview video of the 2.13 inch e-Paper HAT, illustrating its features such as low power consumption and the ability to display static content without power.
7. અરજી સampલેસ
The unique characteristics of E-Ink displays make them ideal for a variety of applications where low power, readability, and persistent display are crucial:
- Electronic Shelf Labels in retail environments
- Industrial Instrumentation displays
- કિંમત Tags and Asset/Equipment Tags
- Conference Name Tags and information displays
- Low-power data logging displays
છબી 7.1: ઓવરview of the 2.13inch E-Ink Display HAT's features and potential applications.
છબી 7.2: વિગતવાર view of the onboard level conversion chip and physical dimensions of the module.
8. મુશ્કેલીનિવારણ
If you encounter issues with your 2.13inch E-Ink Display HAT V4, consider the following:
- કનેક્શન તપાસ: Ensure all pins are correctly aligned and securely connected to the Raspberry Pi or other controller board. Verify the PH2.0 cable is properly seated.
- પાવર સપ્લાય: Confirm that your Raspberry Pi or controller board is receiving adequate power.
- સૉફ્ટવેર સેટઅપ: Double-check your code and ensure all necessary libraries and drivers are installed and configured correctly as per the Waveshare online resources.
- SPI ઇન્ટરફેસ: Verify that the SPI interface is enabled on your host device (e.g., Raspberry Pi).
- Partial vs. Full Refresh: If the display shows ghosting or artifacts, perform a full refresh. E-Ink displays that support partial refresh may require occasional full refreshes to clear residual images.
- ભાગtage સુસંગતતા: ઓનબોર્ડ વોલ્યુમtage translator supports 3.3V/5V. Ensure your MCU's voltage આ શ્રેણીમાં છે.
For persistent issues, consult the Waveshare online development resources or contact their technical support.
9. વોરંટી અને સપોર્ટ
This Waveshare product is covered by the standard manufacturer's warranty. For detailed warranty information, technical support, or to access additional resources, please visit the official Waveshare website or contact their customer service department. Online development resources and user manuals are available to assist with product integration and troubleshooting.
