Inkplate 6 MOTION STM32-powered wireless e-paper display offers higher resolution and faster refresh rates (Crowdfunding)

The Inkplate 6 MOTION is a new product from Soldered Electronics in their Inkplate series of wireless e-paper displays. It is a 6-inch e-paper display with a partial refresh rate of 11fps which reduces obvious latency in rendering dynamic content such as videos, animations, and scrolling text.Inkplate 6 MOTION with enclosure

The display is driven by an STMicroelectronics dual-core STM32H743 microcontroller, with an ESP32-C3 as a secondary processor. It features Wi-Fi and Bluetooth for networking and a host of peripheral interfaces for physical connectivity. It includes several sensors such as a rotary encoder for quick navigation, a gravitational accelerometer with a gyroscope for tracking device orientation, and a motion detection sensor.

We covered the original Inkplate 6 display when it launched on Crowd Supply in 2019. The Inkplate 6 is much less expensive than the new model but has a lower screen resolution (800 x 600 px) and slower refresh rates (256ms). Furthermore, it lacks the sensors on the Inkplate 6 MOTION.

The Inkplate 6 MOTION display is a 1024 x 768px screen with speedy refresh rates and is therefore ideal for dynamic e-paper projects such as information panels, a mounted frame for digital art, a minimalist typewriter, or an e-reader.

Inkplate 6 MOTION PCB

Inkplate 6 specifications:

  • Microcontroller – STMicroelectronics STM32H743ZIT6
  • Co-controller – ESP32-C3 WiFi and BLE SoC
  • RAM – 2MB RAM, 32 MB external DRAM (W9825G6KH-6)
  • Storage – 1MB flash memory, microSD card slot
  • Screen
    • Size – 6”
    • Resolution – 1024 x 758 pixels
    • Active Area – 90.6 x 122.4 mm
    • Pixel Density – 212 ppi
    • Modes – Black & white, or 4-bit greyscale
    • Colors – Black, white, and 14 shades of grey
    • Partial refresh – Supported for black & white and 4-bit greyscale modes
    • Partial refresh time – 91 ms
    • Full refresh time – 500ms (black & white), 800ms (greyscale)
  • Connectivity
    • Network – Wi-Fi and Bluetooth via ESP32-C3
    • USB – USB-C (USB to UART via CH340C chip) for programming, power, and charging battery
    • easy-C Ecosystem connector
    • GPIO – 30+ pins for Ethernet, USB OTH, I²S, SDMMC, I²C, SPI, UART, and other protocols
  • Power
    • Input – 5 V (USB Type-C) or 3.7 V (Li-ion battery)
    • Li-ion charger – Microchip MCP73831 linear charge management controller with LED indicator
    • E-paper PMIC – Texas Instruments TPS651851RSL
    • Current Draw –  22 μA
  • Sensors
    • STMicroelectronics LSM6DSO32 accelerometer and gyroscope module
    • STHC3 temperature and humidity sensor
    • Front-facing sensor – Broadcom APDS-9960 for proximity, gesture, and color detection
  • Misc – 3x user buttons, 2x WS2812B LED, PCAL6416A GPIO expander
  • Board Dimensions – 144 x 108 mm
  • Enclosure Dimensions – 161 x 116 x 15 mm

The device is easy to program by plugging it into a computer with a USB-C cable, connecting it to a Wi-Fi or Bluetooth network, and uploading a few lines of code. The Inkplate 6 MOTION is compatible with popular, open-source development tools such as Arduino IDE, MicroPython, Adafruit GFX, Home Assistant, and ESPHome.

Similar to the older models in the Inkplate family, the Inkplate 6 MOTION e-paper display itself is open-source, hardware and software. The Inkplate 6 MOTION’s Arduino library, MicroPython library, and hardware files are hosted on GitHub. Documentation is accessible via a Read The Docs website for the Inkplate family.

The Inkplate 6 MOTION recently launched on Crowd Supply, with a $10,000 funding goal (surpassed at the time of writing). The display itself is priced at $169. You can get the display with an enclosure for $189 or with an enclosure and a pre-installed battery for $199. There is free shipping within the United States while a $12 shipping fee applies to the rest of the world. All orders are expected to ship by September 19, 2024.

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3 Comments
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urostor
urostor
22 days ago

Who needs a high refresh rate on an e-paper display? It defeats its purpose and looks awful. But somehow it became a metric by which manufacturers compete.

RK
RK
22 days ago

> Who needs a high refresh rate on an e-paper display?

It’s nice for scrolling through epubs, browsing and typing. The Modos paper monitor presentation (also foss: https://gitlab.com/zephray/glider) gives a few examples: https://www.youtube.com/watch?v=pXn-bAwzNv4

> But somehow it became a metric by which manufacturers compete.

High-refresh rate EPDs last longer and leave less ghosting when driven slow and high bit rate for ebook reading as well so it’s a good indicators for quality.

Anonymous
Anonymous
20 days ago

Please approve my previous comment and delete this one. Thanks.

Khadas VIM4 SBC