HELTEC Vision Master E213 (HT-VME213) is a compact and versatile E-Ink development kit based on the ESP32-S3 microcontroller, designed for low-power wireless display applications. It supports multiple wireless communication protocols including Bluetooth, Wi-Fi, and LoRa, enabling flexible deployment in IoT, smart signage, and remote sensor networks. Equipped with a default 2.13-inch black-and-white E-Ink screen, the Vision Master E213 offers ultra-low power consumption and can retain display content for up to 180 days without power, making it ideal for battery-powered or energy-constrained environments. The board is fully compatible with popular development frameworks such as Arduino, PlatformIO, and MicroPython, allowing developers to quickly prototype and deploy applications like electronic shelf labels, identity tags, and status indicators. In addition to supporting custom firmware, the HELTEC Vision Master E213 is capable of running open-source projects such as Meshtastic, making it a practical choice for building LoRa mesh nodes with visual feedback. Its combination of E-Ink display, multi-protocol wireless connectivity, and developer-friendly ecosystem makes it a powerful tool for creating interactive, low-power IoT solutions. Note: To flash Meshtastic firmware on the HELTEC Vision Master E213, please ensure you use version 2.7.0 or above for full compatibility and stable performance. Features of HELTEC Vision Master E213 ESP32-S3R8 MCU, support Wi-Fi and BLE. LoRa module is optional, compatible with Mashtastic. Low power consumption, 20uA 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 2.13 inch 250 x 122 pixels display, support for partial refresh. Storage condition: -25 ~ 70℃, ≤45%RH. Optimal operating condition：0~50℃, 55±10%RH. 2*SH2.0-4P sensor interface is perfectly compatible with QuickLink series sensors. Compatible with Arduino, we provide development frameworks and libraries. Specifications of HELTEC Vision Master E213 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*18*2.54 Header Pin;2*SH2.0-4P sensor interface. Battery 3.7V lithium battery power supply and charging Operating Temperature -20 ~ 70 ℃ Dimensions 66.75*30.41*10mm Display 2.13 Inch Black and White E-Ink Display Screen Description Pin Map Demension 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 HELTEC Vision Master E213 offers a rich set of GPIO pins and hardware expansion interfaces, making it highly adaptable for a wide range of IoT development scenarios. Its onboard SH2.0-4P connector supports direct connection to QuickLink series sensors, enabling rapid integration of peripherals such as temperature, humidity, motion, or environmental sensors without additional wiring or soldering. This modular design allows developers to quickly prototype and scale applications—from electronic shelf labels to remote monitoring nodes—while maintaining a clean and reliable hardware layout. Combined with its support for Bluetooth, Wi-Fi, and LoRa, the Vision Master E213 provides a flexible and expandable platform for building low-power, wireless E-Ink display systems. Plastic support plate HELTEC Vision Master E213 features a transparent plastic support platform installed between the PCB and the E-Ink display, designed to provide both mechanical protection and thermal optimization. This structural layer safeguards sensitive electronic components from physical stress during handling or installation, while also enhancing heat dissipation across the board. By improving airflow and reducing thermal buildup, the support platform contributes to the overall stability and longevity of the device—especially in continuous display or outdoor deployment scenarios. Its integration reflects HELTEC’s attention to durability, thermal management, and hardware reliability in compact E-Ink-based IoT systems. 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 HELTEC Vision Master E213 offers a comprehensive set of GPIO pins and hardware expansion resources, providing developers with broad flexibility for building and scaling IoT applications. Its onboard SH2.0-4P interface enables direct plug-and-play connectivity with QuickLink series sensors, streamlining integration for modules such as temperature, humidity, motion, and environmental sensing. This modular hardware design supports rapid prototyping and simplifies peripheral expansion, making the Vision Master E213 an ideal platform for developing smart tags, sensor nodes, and wireless display systems within Bluetooth, Wi-Fi, or LoRa-based networks. FAQ Can the onboard 2.4GHz antenna be replaced? The onboard 2.4GHz antenna is a fixed spring-type antenna. The board does not include an IPEX or SMA connector for external 2.4GHz signals, so replacement or extension is not supported by default. What development methods does it support? Arduino MicroPython PlatformIO Espressif IDE We strongly recommend using Arduino. We provide complete technical support and offer a full set of libraries and examples for LoRaWAN development. LoRaWAN code for ESP32 Arduino framework What’s the battery socket type? The board uses a standard SH1.25 x 2 battery connector. You can find compatible lithium battery packs by searching “SH1.25 x 2” online or in electronics stores. I can not find serial port. Please reinsert your USB cable, or try another cable that supports data transmission. Open your DEVICE MANAGER, select the port, and if prompted, install the required driver: CP210X driver Try another computer or a different operating system to rule out host-side issues. The serial port does not exist. Open DEVICE MANAGER and check if the device port appears. If not, refer to the previous topic “I can’t find serial port”. Ensure the serial port is not occupied by another application. Enter BootLoader mode using one of the following methods: Connect the USB cable, hold down the User (or ORG or Boot) key, press RST once, then release the User key. Hold down the User (or ORG or Boot) key, then connect the USB cable. How to Start the Development Board. To start the board manually: press and hold the Boot key, press RST once, then release the Boot key. The board includes 21 user-configurable buttons that can be mapped for custom functions or UI control. 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-VME213 x1 LoRa Antenna x1 SH1.25-2P Battery Connector x1 2.54*13 Header Pin x2
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