HELTEC ESP32S3 SX1262 E-Paper LoRa Meshtastic LoRaWAN 2.9 inch 868Mhz

Product Link

LogoHELTEC ESP32S3 SX1262 E-Paper LoRa Meshtastic LoRaWAN 2.9 inch 868MhzOpenELAB Technology Ltd.

Description

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.

Feature

  • 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.

Specification

Parameters

Description

Master Chip

ESP32-S3R8

LoRa Node Chip

SX1262

Frequency

470~510MHz, 863~928MHz

Max. TX Power

21±1dBm

Max. Receiving sensitivity

-136dBm@SF12 BW=125KHz

Wi-Fi

802.11 b/g/n, up to 150Mbps

Bluetooth

Bluetooth 5 (LE)

Hardware Resource

6*ADC_1, 1*ADC_2, 6*Touch, 8M*PSRAM, 3*UART; 2*I2C; 2*SPI. Etc

Memory

384KB ROM; 512KB SRAM; 16KB RTC SRAM; 16MB SiP Flash

Interface

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.

Battery

3.7V lithium battery power supply and charging

Operating Temperature

-20 ~ 70 ℃

E-Ink

2.90 Inch, 128(H)x296(V) Pixel, 29x67mm,

Display Color

Black&White(2 Grayscale)

Dimensions

87.96*36.63*12mm

Display

2.90 Inch Black and White E-Ink Display Screen

Pin Map

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.

Resource

FAQ

1

Can the onboard 2.4GHz antenna be replaced?

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

2

Can ESP32’s WiFi and Bluetooth be used at the same time?

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.

3

What development methods does it support?

  • 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.

4

What’s the battery socket type?

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

5

How to Strat the Development Board.

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

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