3inch E-Paper Module (G), 400 × 168, Red/Yellow/Black/White

Display information in four colours with this 3-inch e-paper module featuring red, yellow, black, and white output. The paper-like display requires no backlight and maintains content even when powered off—ideal for price tags, shelf labels, and low-power status displays.

Uses SPI interface with an onboard voltage translator for easy connection to Raspberry Pi, Arduino, STM32, and other microcontrollers at both 3.3V and 5V logic levels.

Key Features

• 4-Colour Display – Red, Yellow, Black, and White for eye-catching visuals
• Ultra-Low Power – Only draws power during refresh, virtually zero standby current
• Persistent Display – Maintains content indefinitely without power
• Wide Viewing Angle – Greater than 170° for excellent visibility
• Paper-Like Effect – Reflective display readable in direct sunlight
• Voltage Translator – Compatible with 3.3V and 5V microcontrollers

Specifications

• Display Size: 3 inch (70.4 × 29.568mm active area)
• Resolution: 400 × 168 pixels
• Dot Pitch: 0.176 × 0.176mm
• Colours: Red, Yellow, Black, White
• Grey Scale: 2
• Viewing Angle: >170°
• Refresh Time: 12 seconds (full)
• Refresh Power: <60mW typical
• Standby Current: <0.01µA
• Interface: 3-wire or 4-wire SPI
• Operating Voltage: 3.3V / 5V
• Module Dimensions: 88.5 × 41mm

Pin Configuration

• VCC: Power input (3.3V/5V)
• GND: Ground
• DIN: SPI MOSI
• CLK: SPI Clock
• CS: Chip select (active low)
• DC: Data/Command select
• RST: Reset (active low)
• BUSY: Busy status output

Ideal For

• Electronic price tags and shelf labels
• Low-power status displays
• Industrial instrumentation
• Battery-powered information displays

Package Contents

• 1× 3-inch E-Paper Module (G)

Resources

• Waveshare Wiki