Heltec Wireless Paper
ESP32-S3 + SX1262 LoRa E-Ink development board with 2.13" e-paper display, WiFi, BLE 5.0, and LoRa connectivity. Designed for electronic shelf labels, Meshtastic mesh nodes, and low-power IoT sensor displays.
$15.90
Tap any value to browse matching devices
Specifications
Components
Espressif ESP32-S3 SoC with dual-core Xtensa LX7 processor at 240MHz, integrated 8MB flash, WiFi 802.11 b/g/n, BLE 5.0, 12-bit SAR ADC (20 channels), 14 capacitive touch inputs, and hardware crypto acceleration (AES/SHA/RSA).
Semtech SX1262 LoRa transceiver supporting 150-960MHz frequency range with +22dBm transmit power, ultra-low 4.2mA receive current, and LoRa/FSK modulation for long-range LPWAN communication.
Good Display DEPG0213BN 2.13-inch e-paper panel with 250x122 pixel resolution, ultra-low power consumption, and 180-day image retention without power. Driven via SPI interface.
Bus Interfaces
GPIO Map
Overview
The Heltec Wireless Paper is a compact E-Ink development board built around the ESP32-S3FN8 microcontroller and Semtech SX1262 LoRa transceiver. It combines a 2.13-inch black-and-white e-paper display (250x122 pixels) with triple wireless connectivity — WiFi, Bluetooth Low Energy 5.0, and LoRa — in a pocket-sized 72x30mm form factor. The e-paper display retains its content for up to 180 days without power, making it ideal for applications where static information needs to persist.
Powered via USB Type-C or a lithium battery (via SH1.25 connector), the Wireless Paper draws just 20 microamps in deep sleep mode, enabling months of battery-powered operation for remote deployments. The board includes a Vext power control pin (GPIO45) that lets firmware completely shut off the display to further reduce power consumption.
The Wireless Paper has strong community support across multiple firmware platforms. It is officially supported by Meshtastic for off-grid LoRa mesh networking, works with the Arduino framework via the Heltec ESP32 library, supports PlatformIO and ESP-IDF development, and has community-contributed ESPHome configurations for Home Assistant integration. The board ships with a LoRa antenna, transparent acrylic protection plate, and SH1.25 battery connector, ready for immediate prototyping.
Use Cases
5Meshtastic Mesh
Off-grid mesh communication using Meshtastic firmware over LoRa radio.
Electronic Shelf Labels
Wireless e-paper price tags and information labels for retail shelves, warehouses, and inventory management.
Environmental Monitoring
Monitoring environmental conditions like temperature, humidity, air quality, and weather data using remote sensors.
Asset Tracking
Tracking the location and status of physical assets like vehicles, packages, and equipment.
LoRa Mesh Networking
Building off-grid mesh communication networks using LoRa radio for text messaging, location sharing, and sensor data relay without cellular or internet infrastructure.
Resources
Explore more of the directory — popular use cases, firmware, and specs to browse next.
