LaskaKit ESPink-Shelf-2.9 ESP32 e-Paper

Product detailed description

LaskaKit ESPink-Shelf-2.9 is a small development board featuring an ESP32 and a 2.9" ePaper display with a resolution of 384 × 168 px, designed for ultra-low power consumption and convenient programming. You can choose the display in a black and white version with fast refresh or a four-colour version. In deep sleep, the board consumes only around 13 μA – the power supply for both the display and the Qwiic connector is disconnected via a MOSFET controlled by GPIO2, ensuring the display and sensors draw no power when not refreshing. It is programmed via USB-C using a CH9102F converter, which simultaneously charges the connected Li-Pol battery. The board features I2C and SPI Qwiic connectors for easy sensor connection and a microSD card slot. The board supports the Living Image project, which allows you to display photos, calendars (Google, Outlook, Apple), exchange rates, weather station data, or weather forecasts without writing any code.

Specifications:

• Microcontroller: ESP32 (ESP32-WROOM-32 module, 4 MB Flash), Wi-Fi, Bluetooth
• Display: 2.9", 384 × 168 px, Good Display
  • Black and White: GDEY029T71H, fast update
  • Four-colour (black, white, red, yellow): GDEY029F51H, slow update
• Input Voltage: 3.7–8 V
• Power Supply:
  • USB-C (5 V)
  • Li-Pol battery 3.7 V, JST-SH 1.0 connector (2pin)
  • battery charging via USB-C (TP4054 charger, indicator LED)
  • power switch
  • 3.3 V HT7833 regulator (max. 500 mA)
• Deep-sleep current: approx. 13 μA (board with display only, no peripherals connected)
• Programming: via USB-C, CH9102F USB–UART converter
• Connectors and Interfaces:
  • 1× I2C μSup (JST-SH 4pin, Stemma QT / Qwiic compatible) – SDA GPIO21, SCL GPIO22
  • 1× SPI Qwiic
  • microSD card slot – CS GPIO15
  • solder pads for header pins with free GPIOs
• Digital I/O pins: 19
• ePaper pinout (standard for GxEPD2):
  • MOSI/SDI: GPIO23
  • CLK/SCK: GPIO18
  • CS: GPIO5
  • DC: GPIO17
  • RST: GPIO16
  • BUSY: GPIO4
• Display and uSup connector power switching: GPIO2, active HIGH
• Battery voltage measurement: voltage divider on GPIO34
• Compatibility: Arduino IDE (GxEPD2 library), ESP-IDF, Living Picture (board LaskaKit ESPink 2.x, display GDEY029T71H or GDEY029F51H depending on the selected version)
• Suitable battery: GeB LiPol Battery 303048 400mAh 3.7V JST-SH 1.0
• Suitable cables for μŠup connector:
  • μŠup cable with same connector on both ends (various lengths)
  • μŠup cable with Dupont female terminals
  • μŠup cable with test hooks
• Suitable sensors with µSup connector:
  • SHT40 (temperature, humidity)
  • BME280 (pressure, temperature, humidity)
  • SCD41 (CO2, temperature, humidity)
• Suitable frame (front only): Good Display EW029F15
• Suitable pin header: Dupont pin header 40Pin 2.54mm SMD type 1
• Dimensions: approx. 83 × 34.5 × 8 mm
• Weight: 18 g

Package contents:

• 1× LaskaKit ESPink-Shelf-2.9 ESP32 e-Paper with display according to the selected version

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.
• The bezel and battery are not included in the package.
• The 3.3 V stabilizer (HT7833) on the board has a maximum output of 500 mA, leaving only approx. 100 mA for peripherals. Keep this in mind when designing your project.