* 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.
The Vision Master E290 (HT-VME290) is an E-Ink development kit equipped with multiple wireless communication methods. With the provided sample programs and development tools, users are able to control the display using Bluetooth, Wi-Fi, and LoRa technology. This board features a default 2.90-inch black-white E-Ink display with a continuous display for up to 180 days after power outage. It is compatible with development frameworks such as Arduino, PlatformIO, Micropython, and others, making it suitable for applications like electronic tags and identity tags. Additionally, it can run open source projects like Meshtastic.
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Parameters
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Description
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Master Chip
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ESP32-S3R8
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LoRa Node Chip
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SX1262
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Frequency
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470~510MHz,
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863~928MHz
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Max. TX Power
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21±1dBm
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Max. Receiving sensitivity
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-136dBm@SF12 BW=125KHz
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Wi-Fi
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802.11 b/g/n, up to 150Mbps
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Bluetooth
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Bluetooth 5 (LE)
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Hardware Resource
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6*ADC_1, 1*ADC_2, 6*Touch, 8M*PSRAM, 3*UART; 2*I2C; 2*SPI. Etc
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Memory
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384KB ROM;
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512KB SRAM;
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16KB RTC SRAM;
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8MB SiP Flash
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Interface
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Type-C USB;
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2*1.25 lithium battery interface;
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LoRa ANT(IPEX1.0);
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Wi-Fi ANT(IPEX1.0);
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2*20 Pin Famle Header;
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SH2.0-4P sensor interface.
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Battery
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3.7V lithium battery power supply and charging
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Operating Temperature
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-20 ~ 70 ℃
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E-Ink
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2.90 Inch, 128(H)x296(V) Pixel, 29x67mm,
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Display Color
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Black&White(2 Grayscale)
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Dimensions
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87.96*36.63*12mm
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Display
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2.90 Inch Black and White E-Ink Display Screen
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Vision Master E213 has a rich set of pins and hardware resources, which will allow you to expand widely.
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 modules are optional and can reduce a lot of costs if you don’t need aLoRa module.
