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4.2 inch e-paper display module with two buttons, 400 by 300 pixels

LORDWORLD

LORDWORLD 4.2inch E-Paper Display Module 400×300 SPI

SKU CH-PCVG-DWD91

A 4.2 inch 400×300 black-and-white e-paper module with SPI interface, onboard voltage translation for 3.3V and 5V MCUs, two user buttons, and Pico code examples

  • Retains image without power thanks to no backlight
  • Ultra-low consumption draws energy only during refresh cycles
  • SPI connection needs minimal MCU pins
  • Onboard translator works with 3.3 V and 5 V systems
  • Two user buttons plus Pico examples speed development

4.2inch E-Paper Display Module

The LORDWORLD 4.2inch E-Paper Display Module is a 400×300 pixel black and white screen designed for Raspberry Pi Pico series boards. It suits makers building low-power IoT projects that need persistent visual output without constant energy draw. The module requires no backlight and retains the last image shown even after power is removed.

SPI interface with voltage translator

Installation uses a standard SPI connection that needs only a few IO pins on the microcontroller. An onboard voltage translator makes the board compatible with both 3.3V and 5V logic levels, reducing wiring mistakes. The two user buttons are mapped to GPIO pins for simple input handling. Refresh timing and partial update logic in code are the common stumbling blocks for beginners.

400×300 resolution for static content

The 400×300 pixel resolution handles text, icons, QR codes and simple graphics comfortably for dashboard or signage use. Ultra low power consumption means the device only draws current during screen refreshes, enabling weeks of operation on small batteries. It runs out of suitability when animations, video or frequent full-screen updates are required due to the inherent refresh speed of e-paper technology.

Pontos fortes

  • Retains image without power thanks to no backlight
  • Ultra-low consumption draws energy only during refresh cycles
  • SPI connection needs minimal MCU pins
  • Onboard translator works with 3.3 V and 5 V systems
  • Two user buttons plus Pico examples speed development

Especificações

BrandLORDWORLD

Perguntas sobre este artigo

How can I confirm the 4.2inch 400×300 SPI e-paper module is working after wiring it to my Pico?

Upload the supplied MicroPython or C/C++ example, press one of the two onboard user buttons, and the screen should refresh to show the demo image; the display then holds that image with no power drawn until the next refresh.

What comes in the box with the LORDWORLD 4.2inch E-Paper Display Module and what must I source separately?

The module itself with its SPI interface, onboard voltage translator for 3.3V and 5V logic, and two user buttons is included; you must provide a Raspberry Pi Pico series board, jumper wires and a USB cable for power and programming.

Which version of the 4.2inch 400×300 SPI e-paper should I choose for a Pico project?

Only this single 4.2inch 400×300 black-and-white SPI model is offered, so select it when you need a 3.3V or 5V compatible display with two built-in buttons and example code for Raspberry Pi Pico.

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