Wireless Paper is a compact and energy-efficient E-Ink development kit built around the ESP32-S3FN8 microcontroller and the SX1262 LoRa transceiver—making it a versatile option for Meshtastic-based projects, IoT displays, and low-power wireless solutions. Featuring a 2.13-inch black-and-white E-Ink screen (250 × 122 pixels), it offers up to 180 days of static display without power, drawing just 20 μA in deep sleep.
With built-in Wi-Fi, Bluetooth, and LoRa support, it’s ideal for applications like electronic name tags, asset trackers, or lightweight Meshtastic display nodes. Developers can easily drive E-Ink panels of various sizes and update images with drag-and-drop BMP file refresh. The USB Type-C interface ensures fast firmware flashing, power delivery, and debugging, while the included acrylic cover adds durability for field deployments.
This lightweight, all-in-one LoRa E-Ink kit is perfect for creators building low-bandwidth, off-grid visual interfaces in a Meshtastic LoRaWAN environment.
Features
⚙️ ESP32-S3FN8 + SX1262 chipset — supports Wi-Fi, BLE, and LoRa connectivity
🖼️ 250 × 122 px black-and-white E-Ink display (default), also compatible with other E-Ink screen sizes
🌞 High contrast, high reflectivity, and ultra-wide viewing angle
🔋 Ultra-low power consumption: only 20 μA in deep sleep mode
🎯 Built-in display refresh engine, drag & drop BMP image support for quick updates
🌡️ Operating range: 0~50°C, 35~70% RH
🔌 Onboard USB–UART bridge for easy firmware flashing and secondary development
Specifications
| Parameters | Description |
|---|---|
| MCU | ESP32-S3FN8 |
| LoRa Chipset | SX1262 |
| Frequency | 470~510MHz, 863~928MHz |
| Power Supply | lithium battery, USB Type-C |
| Supply Voltage | 3~5v |
| Operating Temperature | 0~50℃ |
| Operating Humidity | 35~70% |
| Display Resolution | 122(H)x250(V) Pixel |
| Connection Method | Wi-Fi, LoRa,BLE |
| Screen Size | 2.13 Inch |
| Active Area | 23.705×48.55 |
| Pixel Pitch | 0.1942X0.1942 |
| Pixel Configuration | Square |
