NOTE4 Developer Kit

Complete e-paper hardware. Open reference code. Build it your way.

NOTE4 Devkit is a fully assembled 4.2-inch black-and-white e-paper development device powered by ESP32-S3. It combines fast partial refresh, full-screen 16-level grayscale, wireless connectivity, controls, audio, NFC, battery power, and an enclosed desktop-ready form.

Built for e-paper development

Use NOTE4 Devkit to prototype dashboards, transit boards, learning tools, control surfaces, information terminals, and other low-power connected devices. The MIT-licensed reference project demonstrates full and partial 1-bit refresh together with full-screen 4bpp grayscale rendering.

Key specifications

• Display: 4.2-inch black-and-white e-paper, 400 × 300 pixels
• Controller: SSD2683
• Rendering: Full and partial 1bpp refresh; full-screen 4bpp / 16-level grayscale
• Processor: ESP32-S3, dual-core Xtensa LX7
• Memory: 16 MB Flash and 8 MB PSRAM
• Wireless: 2.4 GHz Wi-Fi and BLE 5.0
• Power: 2,000+ mAh battery with USB Type-C charging and data
• Hardware: Speaker, microphone, NFC, physical buttons, status light, magnetic back, and expansion interface
• Dimensions: 97 × 97 × 8.75 mm
• In the box: NOTE4 Devkit and one desktop stand

Development device notes

These purchase links are exclusively for developer users. The Devkits are provided without any commitment or guarantee of software features. 

No commercial product warranty is offered for this development device. Hardware manufacturing defects may be eligible for support, subject to assessment and applicable law. Issues caused by flashing, custom firmware, modification, incompatible accessories, misuse, or expected e-paper behavior are assessed separately.