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Small rectangular 1.9inch e-paper board with 91 segments visible

LORDWORLD

LORDWORLD 1.9inch Segment E-Paper Display Module 91 Segments development board

SKU CH-E3PC-KMNXR

A 1.9 inch segment e-paper module with 91 segments, I2C interface and partial refresh for ultra-low-power readouts

  • Ultra-low power draw — only 32 µA during refresh
  • 91 individually driven segments for custom icons and digits
  • 9 inch segment e-paper keeps last image without power
  • No backlight needed — readable in direct sunlight
  • Driver examples for Raspberry Pi, Arduino and STM32 included

Segment E-Paper Display Module

The LORDWORLD 1.9inch segment e-paper module provides 91 individually addressable segments driven over an I2C interface. It targets makers and engineers building battery-powered instruments such as humidifier read-outs or digital meters who need a persistent, zero-power display.

Upgrade from LED or LCD modules

This raw panel replaces seven-segment LED or character LCD modules when always-on visibility without backlight current is the priority. The jump is worthwhile when the device must show readings for weeks on a coin cell and can tolerate the slower partial-refresh cycle of e-paper technology.

Sustained operation behaviour

Under continuous use the display draws power only during the brief refresh events; between updates it retains the last image with no supply connected. The 32 segment driver channels manage the 91 segments so the host MCU stays asleep for the vast majority of the duty cycle.

Points forts

  • Ultra-low power draw — only 32 µA during refresh
  • 91 individually driven segments for custom icons and digits
  • 9 inch segment e-paper keeps last image without power
  • No backlight needed — readable in direct sunlight
  • Driver examples for Raspberry Pi, Arduino and STM32 included

Caractéristiques

BrandLORDWORLD

Questions sur cet article

Does the 1.9 inch e-paper panel need a separate driver board or does it plug straight into a Raspberry Pi GPIO?

The module includes an I2C driver board so it connects directly to a Raspberry Pi, Arduino or STM32 without extra circuitry.

What wiring mistake stops the 91 segment display from updating?

Reversing the SDA and SCL lines on the I2C bus is the most common error; the panel will not refresh until they match the controller pins.

How often must the 91 segment e-paper be refreshed to keep the image visible?

The display retains its last content indefinitely without power; a refresh is only needed when you want to change the shown values.

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