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Description
Characteristics
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Description
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
| 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 |
Description
Pin Map
High light
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
- [Resource] — Heltec ESP (ESP32&ESP8266) framework (Include LoRaWAN library)
- [Attachment] — Heltec ESP32 special library
- [Attachment] — Schematic diagram
- [Attachment] — Datasheet
- [Attachment] — E-Ink Datasheet
- [Resource] — User manual and related documents
- [Resource] — Downloadable Resources
Packing list
The default packing list without selecting any accessories is as follows:
| Item | Quantity |
|---|---|
| HT-VME290 | x1 |
| LoRa Antenna (Available when LoRa selected) | x1 |
| SH1.25-2P Battery Connector | x1 |
| 2.54 *13 Header Pin | x2 |
Characteristics
| Weight | 35 g |
|---|---|
| Dimensions | 6.6 × 6.6 × 2 cm |
| LoRa Band | 433MHz, 470~510MHz, 863~870MHz, 902~928MHz, N/A |
| Firmware | Factory Firmware, Meshtastic |
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Vision Master E290, ESP32S3 + SX1262 E-Ink LoRa Node, Meshtastic and LoRaWAN Compatible
What's this?
Vision Master E290 is a IoT development board with 2.9 inch E-Ink.
$19.90 – $21.90
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