1.9 inch Segment e-Paper Module – I2C Interface Online




1.9 inch Segment e-Paper Module – I2C Interface

Click Here to download the complete user guide to working with Raspberry Pi, Arduino, and STM32 as well as resources and FAQs.

This is the 1.9-inch Segment E-Paper Module, perfect for your temperature and humidity meter, humidifier, or digital meter needs. With a wide viewing angle and a paper-like display, this module offers a unique and low-power solution to your display needs.


  • 91 segments for displaying information
  • Partial refresh support – saves power and extends the lifespan of the module
  • No backlight required, as the display maintains its last content even without electricity
  • Ultra-low power consumption, only requiring power for refreshing
  • I2C interface for easy integration with popular controller boards like Raspberry Pi, Arduino, and STM32
  • Onboard MOS voltage translating circuit, compatible with both 3.3V and 5V MCUs
  • Comes with development resources and manual, including a driver board schematic and examples for Raspberry Pi, Arduino, and STM32

Possible Applications

  • Temperature and humidity meter
  • Humidifier
  • Digital meter for various purposes

I2C Control Interface Onboard

Works with different controller boards including Raspberry Pi, Arduino, and STM32

Pin Definition

  • VCC: Power Input (3.3V ~ 5V)
  • SDA: I2C Data Input
  • SCL: I2CI Clock Input
  • RST: RESET External (Low Active)
  • BUSY: Busy Status Output Pin (Busy on High Level)

Connection Example with Raspberry Pi

Connection Example with Arduino

Connection Example with STM32

91 Segments Full Display

Advantages of E-Paper (E-Ink) Display Technology

The E-Paper Display uses microcapsule electrophoretic technology to display content. This technology works by applying an electric field to charged particles suspended in clear fluid, causing the microcapsule to become visible by reflecting ambient light, just like traditional printed paper.

Some of the benefits of this technology are:

  • Clear display without electricity: Display content is clearly visible under lamplight or natural light without a backlight
  • Wide viewing angle: Offers nearly up to 180° viewing angle
  • Paper-like effect: Often used as an e-reader due to its resemblance to traditional printed paper


  • Display Size (Diagonal): 1.9-inch
  • Control Interface: I2C
  • Operating Voltage: 3.3V ~ 5V
  • Segments: 91
  • Grey Scale: 2
  • Field of View: >170°
  • Display Colour: Black & White
  • Full Refresh Time: 2 Seconds
  • Partial Refresh Time: 0.3 Seconds
  • Standby Current: < 0.01uA
  • Refresh Power (Typical): < 5mW
  • Weight: 4 Grams


  • Display Dimensions (Screen Area): 41.35mm x 28.11mm
  • Outline Dimensions: 51.0mm x 34.0mm

Items Included

  • Segment e-Paper Module 1.9-inch
  • Cable 6Pin
Shipping & Delivery

We accept returns on non-sale items that are in original packaging, unused, and unwashed within 30 days of receipt. Please follow our returns/exchanges process below. If items do not meet our requirements for return, they will be shipped back to you in lieu of a refund. Shipping and handling charges are non-refundable (exceptions may apply).

Returns & Exchanges Process: If item(s) fit within our returns guidelines found in the Returns. Please allow 7-10 business days for the credit to appear on your account after your return is processed.