PaperS3 is a touch-enabled, low-power e-ink display main control device, powered by the ESP32-S3 controller. The front features a 540x960 @ 4.7inch (integrated touch and screen) e-ink display that supports 16-level grayscale. Equipped with a GT911 capacitive touch panel, it supports two-point touch and various gesture operations. PaperS3 adopts a full-screen structure. Unlike ordinary LCD screens, the e-ink display provides a better text reading experience while offering low power consumption and image retention when powered off. It integrates a gyroscope sensor, onboard buzzer, and physical buttons, enabling interactive operations such as power on/off. In terms of data storage, PaperS3 is equipped with a Micro-SD interface, and the ESP32-S3R8 chip comes with 8MB of PSRAM. Additionally, the device includes an external 16MB flash chip for storage expansion, ensuring higher capacity and faster data access. It built-in 1800mAh lithium battery with charging capabilities. Combined with the internal RTC (BM8563), it supports sleep and wake functions, offering robust battery life. The device also includes an onboard battery monitoring circuit for real-time battery status monitoring, ensuring effective battery health management. The back panel provides a HY1.25-4P peripheral interface, allowing for the expansion of various sensor devices, offering unlimited possibilities for subsequent application development. The device also supports OTG functionality, enabling better connectivity and data exchange with external devices. PaperS3 is suitable for applications such as IoT monitoring, smart home, environmental monitoring, health monitoring, electronic labeling, data recording, and various low-power display and interaction scenarios. Note:Due to different production batches, there are differences in printing screen printing, which does not affe