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3-inch e-paper module with 400x168 red yellow black white display on green PCB

LORDWORLD

LORDWORLD 3inch E-Paper Module (G) 400x168 Red/Yellow/Black/White development board

SKU CH-CCJJ-MEBXK

A 3-inch four-colour e-paper display with a 400×168 resolution, SPI interface and onboard voltage translation for 3.3 V and 5 V microcontrollers

  • Persistent image without power thanks to zero-backlight e-paper
  • Runs on 3.3 V or 5 V logic via onboard voltage translator
  • Connects to Raspberry Pi, Jetson Nano, Arduino or STM32 over SPI
  • Ultra-low power draw — energy needed only during refresh
  • Includes driver schematics and code examples for rapid development

3inch E-Paper for Embedded Projects

This 3inch E-Paper module (G) provides a 400x168 resolution display capable of showing red, yellow, black and white pixels. It targets makers and engineers building low-power IoT edge devices or development boards that require a persistent, paper-like readout without constant power draw.

SPI Wiring and Voltage Compatibility

The board uses a standard SPI interface for communication with controllers such as Raspberry Pi, Jetson Nano, Arduino and STM32 platforms. An onboard voltage translator handles logic-level conversion, making it directly compatible with both 3.3V and 5V microcontrollers without extra components.

Refresh Rate and Static Image Limits

Power is only consumed during screen refresh cycles, allowing the last displayed image to remain visible indefinitely after power is removed. The four-colour e-ink technology inherently updates slower than LCD or OLED panels, so it is unsuitable for animations, video playback or interfaces requiring rapid real-time changes.

Besonderheiten

  • Persistent image without power thanks to zero-backlight e-paper
  • Runs on 3.3 V or 5 V logic via onboard voltage translator
  • Connects to Raspberry Pi, Jetson Nano, Arduino or STM32 over SPI
  • Ultra-low power draw — energy needed only during refresh
  • Includes driver schematics and code examples for rapid development

Technische Daten

BrandLORDWORLD

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How do I verify the 400x168 red/yellow/black/white display is working after wiring it to my Raspberry Pi?

Run the supplied Raspberry Pi example code; the panel should refresh once showing the demo image, then retain that image without power because the module has no backlight and only draws current during refresh.

What comes in the box and what must I provide separately?

The package includes the 3‑inch E‑Paper module with onboard voltage translator and a manual containing driver‑board schematics and example code for Raspberry Pi, Arduino and STM32; you must supply the host board (Pi, Jetson Nano, Arduino or STM32) and jumper wires for the SPI connection.

Which voltage version of the module should I choose for a 3.3 V or 5 V MCU?

The single version shipped includes an onboard voltage translator that makes it compatible with both 3.3 V and 5 V microcontrollers, so no separate voltage option needs to be selected.

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