Miongozo+

waveshare 4.2inch e-Paper Module (B)

Waveshare 4.2-inch E-Ink Display Module (B) User Manual

Model: 4.2inch e-Paper Module (B)

1. Bidhaa Imeishaview

The Waveshare 4.2-inch E-Ink Display Module (B) is a low-power, high-resolution display solution designed for various embedded applications. It features a 400x300 pixel resolution and supports a three-color display (red, black, and white). The module includes an embedded controller and communicates via an SPI interface, making it compatible with popular development boards such as Raspberry Pi, Arduino, and Nucleo.

Key characteristics of this E-Ink display include:

  • Matumizi ya nguvu ya chini kabisa: Power is primarily required only during display refresh cycles.
  • Pana viewpembe: Provides clear visibility from various perspectives.
  • Bistable display: Retains the displayed content indefinitely without continuous power supply, eliminating the need for a backlight.
  • Onboard juzuu yatage translator: Ensures compatibility with both 3.3V and 5V microcontrollers.
Waveshare 4.2-inch E-Ink Display Module showing '4.2inch e-Paper 400x300 Pixels Red, Black and white 2 gray scale'

Figure 1: The Waveshare 4.2-inch E-Ink Display Module (B) displaying its specifications and capabilities in red, black, and white.

2. Yaliyomo kwenye Kifurushi

Thibitisha kuwa bidhaa zote zilizoorodheshwa hapa chini zimejumuishwa kwenye kifurushi chako:

  • 1x 4.2inch e-Paper Module (B)
  • Kebo ya 1x PH2.0 ya sentimita 20 yenye pini 8
  • Development Resources (accessible via online Wiki)
Waveshare 4.2-inch E-Ink Display Module and an 8-pin PH2.0 cable

Figure 2: The 4.2-inch E-Ink Display Module (B) alongside the included 8-pin PH2.0 connection cable.

3. Maagizo ya Kuweka

This section outlines the general steps for connecting and preparing your E-Ink display module. For detailed, platform-specific instructions and code examples, refer to the official Waveshare Wiki.

Uunganisho wa vifaa

  1. Tambua Pini: The module uses an SPI interface. Identify the corresponding SPI pins (MOSI, MISO, SCK, CS, DC, RST, BUSY) on your microcontroller (e.g., Raspberry Pi, Arduino).
  2. Unganisha Nguvu: Connect the VCC pin of the E-Ink module to a 3.3V or 5V power supply on your microcontroller. Connect the GND pin to the ground. The onboard voltage translator ensures compatibility with both voltagviwango vya e.
  3. Connect SPI Interface: Use the provided PH2.0 8-pin cable to connect the E-Ink module to your microcontroller's SPI pins. Ensure correct pin mapping as per your microcontroller's documentation and the Waveshare Wiki.
Close-up of the 8-pin PH2.0 cable with colored wires

Mchoro 3: Kukaribiana view of the 8-pin PH2.0 cable, typically used for connecting the display module to a microcontroller.

3.2 Usanidi wa Programu

The Waveshare Wiki provides comprehensive development resources, including example code for Raspberry Pi, Jetson Nano, Arduino, and STM32. These examples demonstrate how to initialize the display and render content.

  • Download Libraries: Obtain the necessary E-Ink display libraries from the Waveshare Wiki.
  • Mzigo Exampchini: Load the provided example code onto your microcontroller.
  • Sanidi: Adjust the example code as needed for your specific application and pin configuration.

4. Operating the Display Module

Once connected and programmed, the E-Ink display operates by receiving data through the SPI interface to update its content. The display supports red, black, and white colors.

4.1 Display Refresh Cycle

E-Ink displays have a distinct refresh cycle. For the 4.2-inch module, a full refresh typically takes approximately 15 seconds. During this time, the display may flash or show intermediate patterns as the pigments are rearranged to form the new image. After the refresh, the image remains stable without consuming power.

4.2 Content Display

You can display various types of content, including text, graphics, and images. The provided software examples illustrate how to prepare and send image data to the display buffer for rendering.

Waveshare 4.2-inch E-Ink Display Module showing a sleeping panda illustration

Figure 4: The 4.2-inch E-Ink Display Module (B) displaying a graphic of a sleeping panda, demonstrating its image rendering capability.

5. Matengenezo

The E-Ink display module requires minimal maintenance due to its robust design and low power consumption characteristics.

  • Kusafisha: Use a soft, dry, anti-static cloth to gently clean the display surface. Avoid using liquid cleaners or abrasive materials.
  • Masharti ya Mazingira: Operate and store the module within its specified temperature and humidity ranges to ensure optimal performance and longevity. Avoid exposure to direct sunlight for prolonged periods, as this can affect the display's lifespan.
  • Utunzaji wa Kimwili: Handle the module by its edges. Avoid applying pressure directly to the display area, as this can cause damage.
  • Usimamizi wa Nguvu: Since the display retains its image without power, you can disconnect power after a refresh if the content does not need to change, further conserving energy.

6. Utatuzi wa shida

If you encounter issues with your E-Ink display module, consider the following troubleshooting steps:

  • Hakuna Onyesho/Skrini Tupu:
    • Verify all power and SPI connections are secure and correctly wired.
    • Ensure your microcontroller is powered on and the code is running.
    • Angalia ujazo wa usambazaji wa nguvutage (3.3V or 5V) to the module.
  • Onyesho Lisilo Sahihi/Lililochafuliwa:
    • Confirm that the SPI communication protocol and pin assignments in your code match your hardware connections.
    • Ensure the display resolution (400x300) is correctly configured in your software.
    • Check for any timing issues or incorrect data formatting in your display refresh routine.
  • Kiwango cha Kuburudisha Polepole:
    • The 15-second full refresh time is inherent to this E-Ink technology. This is normal operation.
  • Display Artifacts/Ghosting:
    • Ensure a full refresh cycle is completed when changing content significantly.
    • Some minor ghosting can occur with partial updates; a full refresh typically clears this.

For more advanced troubleshooting and specific error codes, consult the Waveshare Wiki or community forums.

7. Vipimo

KipengeleVipimo
Uendeshaji Voltage3.3V ~ 5V
KiolesuraSPI ya waya 3, SPI ya waya 4
Vipimo vya Muhtasari103.0mm × 78.5mm
Ukubwa wa Kuonyesha84.8mm × 63.6mm
Dot Pitch0.212 × 0.212 mm
AzimioSaizi 400 × 300
Rangi ya KuonyeshaNyekundu, Nyeusi, Nyeupe
Kiwango cha Grey2
Muda Kamili wa KuburudishaTakriban sekunde 15
Onyesha Nguvu26.4mW (kawaida)
Nguvu ya Kusimama<0.017mW
ViewAngle>170°
Uzito wa Kipengee0.352 wakia
Vipimo vya KifurushiInchi 4.25 x 4.21 x 1.3
Technical drawing showing dimensions of the 4.2-inch E-Ink module in millimeters

Figure 5: Dimensional drawing of the 4.2-inch E-Ink Display Module (B), with measurements in millimeters.

8. Msaada na Rasilimali

For the most up-to-date documentation, development resources, and community support, please visit the official Waveshare Wiki:

www.waveshare.com/wiki/4.2inch_e-Paper_Module_(B)

The Wiki includes:

  • Detailed hardware connection diagrams.
  • Example code for various microcontrollers (Raspberry Pi, Arduino, Jetson Nano, STM32).
  • Datasheets and technical information.
  • FAQs and troubleshooting guides.

9. Taarifa za Udhamini

Specific warranty details for this product are not provided in the available information. Please refer to the Waveshare official webau wasiliana na huduma kwa wateja wao kwa masharti na masharti ya udhamini.

Nyaraka Zinazohusiana - 4.2inch e-Paper Module (B)

Kablaview Mwongozo wa Mtumiaji na Mwongozo wa Kiufundi wa Karatasi ya Kielektroniki ya inchi 2.13 (B) ya Waveshare
Mwongozo kamili wa WAVESHARE 2.13inch e-Paper HAT (B), unaohusu miunganisho ya vifaa, usanidi wa programu, kanuni za programu, na utatuzi wa matatizo kwa Raspberry Pi, Arduino, Jetson Nano, na STM32.
Kablaview Mwongozo wa Moduli ya Karatasi ya Kielektroniki ya Waveshare ya inchi 2.66
Mwongozo kamili wa mtumiaji wa moduli ya Waveshare ya inchi 2.66 ya Karatasi ya Kielektroniki, ikielezea vipengele vyake, vipimo, muda wa SPI, itifaki ya kufanya kazi, tahadhari, na miongozo ya ujumuishaji wa majukwaa ya Raspberry Pi, Jetson Nano, STM32, na Arduino, ikijumuisha maelezo ya API na Maswali Yanayoulizwa Mara kwa Mara.
Kablaview Mwongozo wa Mtumiaji wa Kofia ya Kiendeshi cha Waveshare: Unganisha Maonyesho ya Karatasi ya SPI kwa Raspberry Pi, Arduino, STM32
Mwongozo wa mtumiaji wa Kofia ya Kiendeshi cha Waveshare e-Paper, inayoelezea vipengele vyake, vigezo vya bidhaa, vipimo vya kiolesura, na miundo inayotumika ya e-Paper. Inajumuisha miongozo ya usanidi ya Raspberry Pi, Arduino, na bodi za ukuzaji za STM32.
Kablaview Moduli ya Onyesho la Wino wa Kielektroniki ya Inchi 2.9 kwa Mwongozo wa Mtumiaji wa Raspberry Pi Pico
Mwongozo huu wa mtumiaji unatoa maelezo kuhusu Moduli ya Onyesho la Wino la E-Paper ya inchi 2.9 kwa Raspberry Pi Pico. Inashughulikia teknolojia ya E-Ink advantages, utangamano na Raspberry Pi Pico, programu ya zamaniamples, na ufafanuzi wa pinout. Moduli hii ina ubora wa 296x128, onyesho Nyeusi/Nyeupe, na kiolesura cha SPI.
Kablaview Mwongozo na Mwongozo wa Mtumiaji wa Kofia ya Karatasi ya Kielektroniki ya inchi 7.5
Mwongozo huu kamili wa mtumiaji hutoa maelezo ya kina kuhusu KOFIA ya E-Paper ya Waveshare ya inchi 7.5 (V1/V2), moduli ya onyesho la azimio la 800x480 inayotumia teknolojia ya Onyesho la Kielektroniki la Microencapsulated. Inashughulikia miunganisho ya vifaa, mawasiliano ya SPI, kanuni za kazi, na ujumuishaji na Raspberry Pi, Arduino, Jetson Nano, Sunrise X3 Pi, STM32, ESP32, na ESP8266. Tahadhari muhimu, rasilimali, na Maswali Yanayoulizwa Mara kwa Mara yanajumuishwa kwa matumizi bora.
Kablaview Moduli ya EPD ya Waveshare Pico ya inchi 2.13 kwa Raspberry Pi Pico: Mwongozo wa Usanidi na API
Mwongozo wa kina wa uundaji wa moduli ya EPD ya Waveshare Pico e-Paper 2.13inch yenye Raspberry Pi Pico. Vipengele vinajumuisha ubora wa 250x122, kiolesura cha SPI, misimbo ya majaribio ya C/C++ na MicroPython, na nyaraka kamili za API.