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  4. Vision Master E290, ESP32S3 + SX1262 E-Ink LoRa Node, Meshtastic and LoRaWAN Compatible

Summary

Vision Master E290 (HT-VME290) is an E-Ink development kit with multiple wireless drive methods. Collaborate with the sample programs and development tools we provide, users can operate the display via Bluetooth, Wi-Fi and LoRa.

This board is equipped with a default 2.90-inch black-white E-Ink display screen, continuous display for 180 days after power outage. It is compatible with Arduino, PlatformIO, Micpython and other development frameworks, can be used to develop applications such as electronic tags and identity tags, it is also possible to run open source projects like Meshtastic.

Main Features

  • ESP32-S3R8 MCU, support Wi-Fi and BLE.
  • LoRa module is optional, compatible with Mashtastic.
  • Low power consumption, 18uA in deep sleep, continuous display for 180 days after power outage.
  • Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB / battery power automatic switching).
  • Onboard 2.90 inch 296 x 128 pixels display, support for partial refresh.
  • Storage condition: -25 ~ 70℃, ≤45%RH.
  • Optimal operating condition：0~50℃, 55±10%RH.
  • SH2.0-4P sensor interface is perfectly compatible with QuickLink series sensors.
  • 2*20 Pin Female Header, perfectly compatible with Raspberry PI.
  • Compatible with Arduino, we provide development frameworks and libraries.

Specifications

ParametersDescription
Parameters Master ChipDescription ESP32-S3R8
Parameters LoRa Node ChipDescription SX1262
Parameters FrequencyDescription 470~510MHz,
863~928MHz
Parameters Max. TX PowerDescription 21±1dBm
Parameters Max. Receiving sensitivityDescription -136dBm@SF12 BW=125KHz
Parameters Wi-FiDescription 802.11 b/g/n, up to 150Mbps
Parameters BluetoothDescription Bluetooth 5 (LE)
Parameters Hardware Resource Description 6*ADC_1, 1*ADC_2, 6*Touch, 8M*PSRAM, 3*UART; 2*I2C; 2*SPI. Etc
Parameters MemoryDescription 384KB ROM;
512KB SRAM;
16KB RTC SRAM;
16MB SiP Flash
Parameters InterfaceDescription Type-C USB;
2*1.25 lithium battery interface;
LoRa ANT(IPEX1.0);
Wi-Fi ANT(IPEX1.0);
2*20 Pin Famle Header;
SH2.0-4P sensor interface.
Parameters Battery Description 3.7V lithium battery power supply and charging
Parameters Operating Temperature Description -20 ~ 70 ℃
Parameters E-InkDescription 2.90 Inch, 128(H)x296(V) Pixel, 29x67mm,
Parameters Display ColorDescription Black&White(2 Grayscale)
Parameters Dimensions Description 87.96*36.63*12mm
Parameters DisplayDescription 2.90 Inch Black and White E-Ink Display Screen

Description

Pin Map

High light

LoRa module is optional

LoRa modules are optional and can reduce a lot of costs if you don’t need a LoRa module.

Highly extensible

Vision Master E213 has a rich set of pins and hardware resources, which will allow you to expand widely.

The SH2.0-4P interface can be directly connected to the QuickLink series sensors. 

2*20 Pin Female Header, perfectly compatible with Raspberry PI.

High Resolution&Easy to Use

The integrated E-Ink display has a high resolution of 128×296 pixels, and can show system status and parameters, making it convenient for users to use the development board for their own product design.

LoRa module is optional

LoRa modules are optional and can reduce a lot of costs if you don’t need a LoRa module.

Highly extensible

Vision Master E213 has a rich set of pins and hardware resources, which will allow you to expand widely.

The SH2.0-4P interface can be directly connected to the QuickLink series sensors. 

2*20 Pin Female Header, perfectly compatible with Raspberry PI.

FAQ

The 2.4GHz antenna is a spring antenna, and there is no additional interface on the board for 2.4GHz wireless signals.

No, the WiFi LoRa 32 don’t have an external PSRAM, if your application need use Bluetooth and Wi-Fi at the same time, you can look into this product: Heltec Wireless Bridge.

  • Arduino
  • Micro Python
  • PlatformIO
  • Espressif IDE

We strongly recommend using Arduino. We have complete technical support and provide complete LoRaWAN code for ESP32 Arduino framework.

You can find this type of socket by search “SH1.25 x 2”.

Press and hold the Boot key, press RST once, and then release the  Boot key. Among them 21 button can be customized by user.

Docs & Resource

Packing list

The default packing list without selecting any accessories is as follows:

ItemQuantity
Item HT-VME290Quantity x1
Item LoRa Antenna (Available when LoRa selected)Quantity x1
Item SH1.25-2P Battery ConnectorQuantity x1
Item 2.54 *13 Header PinQuantity x2

Vision Master E290, ESP32S3 + SX1262 E-Ink LoRa Node, Meshtastic and LoRaWAN Compatible

$19.90 – $21.90

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