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E Ink Spectra 6 Wireless Casting Display System

Categories:Blog
Author:Zhang Hui
Origin:Original
Time of issue:2026-04-30 16:19
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(Summary description)

E Ink Spectra 6 Wireless Casting Display System

(Summary description)

Categories:Blog
Author:Zhang Hui
Origin:Original
Time of issue:2026-04-30 16:19
Views:

Information

Product Overview

This product is a high-performance integrated solution for remote image transmission and color e-paper display. It features a 13.3-inch 6-color HD e-paper display with a resolution of 1200×1600. Based on the ESP-NOW wireless communication protocol, the system can quickly synchronize and push images uploaded from mobile phones or computers to one or multiple e-paper terminals.

The built-in optimized Floyd‑Steinberg dithering algorithm accurately restores image details and color layers. The entire solution does not rely on routers or external networks, enabling easy deployment, cable-free installation, and ultra-low power consumption. It is widely used in electronic shelf labels, smart dashboards, industrial data screens, digital art frames, and other commercial scenarios.

What is ESP-NOW?

ESP-NOW is a lightweight, connectionless, low-power wireless communication protocol developed by Espressif. It operates on the 2.4GHz band and supports point-to-point direct communication between ESP32 devices without requiring a Wi-Fi router or hotspot.

✨ Key Advantages:

Millisecond-Level Low Latency: Direct point-to-point connection eliminates network handshakes for fast response.
Ultra-Low Power Consumption: Supports deep-sleep mode with a receiving current as low as 15–20mA, ideal for long-term battery-powered applications.
Stable & Reliable Transmission: Supports data encryption and unicast communication. The maximum payload per packet is 250 bytes with hardware ACK to prevent packet loss.
Multi-Device Cluster Management: One master device can manage up to 20 slave devices simultaneously for batch synchronization.

In this system, ESP‑NOW completely replaces traditional Wi-Fi networking. Terminals connect automatically, greatly reducing deployment difficulty and long-term power costs.

System Architecture

Transmitter Master

ESP32 Main Controller

Built-in Web Management

Image Preprocessing

ESP-NOW Packet Transmission

⟹ ESP‑NOW Wireless ⟹

Display Terminal

ESP32 + 13.3" 6-Color E-Paper

Auto MAC Registration

RLE Data Decompression

ACK Signal Feedback

Users upload images via mobile/PC Web UI → Images compressed & split → Broadcast to all terminals via ESP-NOW → Terminals render and refresh the e-paper screen.

Core Applications

️ Smart Electronic Shelf Labels

For supermarkets, warehouses, and retail shelves. Remotely update prices and promotions with ultra-low power for months of battery life.

Corporate Digital Bulletin Boards

For campuses, offices, and medical facilities. Zero power consumption for static images, supporting remote schedule and notice updates.

Industrial Data Dashboards

For production lines and equipment monitoring. Real-time status updates with strong anti-interference performance in industrial environments.

Digital Art Frames

For galleries, hotels, and commercial spaces. 6-color e-paper provides soft, eye-friendly display with wireless picture switching.

Public Transportation Signs

For bus stations and wayfinding systems. Solar-powered, maintenance-free, and stable for long-term operation.

Smart Campus & Education

For classroom signs, exam boards, and school information displays. Centralized control with rich colors and eye protection.

✨ Core Technical Features

Auto Device Registration

Terminals automatically scan and connect to the master network after power-on. MAC address registration completes without manual pairing.

Breakpoint Resume & Stable Transmission

Uses RLE compression to reduce data size. ACK/NACK verification ensures automatic retransmission of lost packets.

Professional 6-Color Optimization

Custom 6-color display scheme combined with serpentine Floyd‑Steinberg dithering for natural, detailed e-paper output.

Full Low-Power Design

CPU frequency optimization, peripheral sleep control, and RF power saving. Standby current: 15–20mA, ideal for battery-powered use.

Advantages Over Traditional Wi-Fi Solutions

⚡ Fast Networking
ESP‑NOW requires no Wi-Fi configuration. Devices communicate immediately after power-on.

60% Lower Power Consumption
Simplified protocol eliminates long-term keep-alive, drastically reducing power usage.

Encrypted & Secure
Private wireless communication prevents unauthorized access and ensures data safety.

Customization Services

We support full-range personalized customization based on customer project requirements:

Adapt to various sizes of monochrome/color e-paper screens, custom software & hardware functions, dedicated UI, private communication protocols, structural design, OEM & ODM services.

We support prototype testing, small-batch trial production, and mass production for global clients.

Welcome to contact us for further details.

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