Heltec Meshtastic E290 ESP32 SX1262 LoRa Devboard Kit with 2.90-inch E-Ink Display BLE WiFi Type-C USB Compatible with Arduino

Features & Compatibility

Vision Master E290 model and power notes

• Use the HT-VME290 / Heltec Vision Master E290 firmware target. This 2.9-inch board is different from E213, T190 and Wireless Paper.
• Select the radio band corresponding to the ordered hardware and antenna. The documented E290 has no built-in GPS.
• E-paper retains an image without power; a visible retained image does not mean the ESP32 is running. Refresh activity and radio operation affect application power consumption.
• The 2 x 20 expansion header requires matching wiring, signal levels and host software; it is not universal Raspberry Pi plug-and-play compatibility.

 

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.

 

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 Meshtastic.
• Low-power operation depends on hardware state and firmware. E-paper retains an image without display power; this is not a guarantee of ESP32/radio battery runtime.
• 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, requires matching wiring and driver support before connection to a Raspberry Pi.
• Compatible with Arduino, we provide development frameworks and libraries.

 

Specifications

 

Parameters	Description
Master Chip	ESP32-S3R8
LoRa Node Chip	SX1262
Frequency	433 MHz / 863–870 MHz / 902–928 MHz: select the matching product option
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 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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High light

 

USB/Battery interface 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).

 

High resolution display rich 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.

 

Highly extensible Vision Master E290 has a rich set of pins and hardware resources, which will allow you to expand widely. 2*20 Pin Female Header, requires matching wiring and driver support before connection to a Raspberry Pi.

Demension

Docs & Resource

 

Packing list

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

Item	Quantity
HT-VME290	x1
LoRa Antenna	x1
SH1.25×2 Battery Connector	x1