Inkplate 4 TEMPERA: an electronic ink display for Arduino

Inkplate 4 TEMPERA

Soldered Electronics is a firm that launches new products year after year ESP32 based devices, specifically ePaper or electronic ink screens like those of eReaders. On this occasion we present another of those products, called Inkplate 4 TEMPERA, which is a 3.8″ e-Paper screen and a resolution of 600×600 px, in addition to having numerous functions and sensors to use in various ways in your projects.

For example, it has a front light, gyroscope, accelerometer, temperature sensor, humidity sensor, air quality sensor, gesture sensor, WiFi, Bluetooth, etc. And the best thing is that it is Android compatible, so you can easily use it in your maker projects.

The new Inkplate 4 TEMPERA is also MicroPython compatible, so the possibilities increase, and ESPHome support will soon arrive as well, although it is not yet ready from the community. In short, a very versatile and practical device with which to carry out a multitude of projects.

Of course, this new device created by Soldered Electronics will not be available for delivery until March 2024. At the moment it is under crowdfunding on the Crowd Supply platform.

Technical specifications of the Inkplate 4 TEMPERA

As for the Inkplate 4 TEMPERA technical specifications From Soldered Electronics, we have:

  • ESP32-WROVER-E Wireless Connectivity Module:
    • ESP32 dual-core microcontroller with Wi-Fi 4 & Bluetooth 4.0
    • 8MB PSRAM memory
    • 4MB flash storage
    • Antenna integrated into PCB
  • External storage:
    • Using MicroSD memory cards
  • ED038TH2 display:
    • 3.8 inches
    • 3-bit depth color (grayscale: black, white and 6 different shades of gray)
    • ePaper panel type
    • 600 x 600 px resolution
    • Refresh frequency:
      • 0.18s partial refresh in 1-bit mode (black and white)
      • 0.86s full refresh rate in 1-bit or 3-bit mode
    • Touch, multipoint
    • Adjustable LED front light
    • Optional glass panel
  • USB port:
    • USB Type C for power and programming with a CH340 converter
  • Sensors included:
    • Bosch SensorTech BME688: room sensor to measure air quality, humidity, pressure and temperature
    • Side-mounted APDS-9960: gesture sensor to control the device
    • LSM6DS3: gyroscope and accelerometer for control
  • Expansion connector:
    • easyC (Qwicc/STEMMA Qt) via PCAL6416 GPIO
  • Features:
    • PCF85063A real-time clock (RTC) for precise time measurement thanks to an additional battery
    • “Wake Up” button to wake up the device
    • Buzzer for audible alerts
  • Feeding:
    • 5V via USB-C
    • Pre-installed 1200-mAh Li-Ion battery
    • Power consumption of 18 µA in saving mode
    • Power supply based on the TPS65186
    • On-board battery charging system type MCP73831
    • Monitor battery status, SoC, etc., integrated on the board type BQ27441DRZR
  • Size:
    • 90x83x24 mm

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