ZecTrix Note 4 – A 4.2-inch ESP32-S3 wireless e-paper display for voice tasks

Source: CNX Software· Debashis Das· August 5, 2026
ZecTrix Note 4 – A 4.2-inch ESP32-S3 wireless e-paper display for voice tasks

Designed by ZecTrix Lab in China, the Note 4 is an ESP32-S3-based AI smart note with a 4.2-inch e-paper display and built-in voice input. The device is designed to display reminders, notes, clocks, weather, images, and custom templates, while the Note 4C vari…

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