e-Paper Display 3.97" 800×480 with ESP32-S3, Wi-Fi, Bluetooth (with battery) - Waveshare 33552

Description

ESP32-S3-ePaper-3.97 provides an integrated development platform for low-power IoT projects and portable devices. The ESP32-S3R8 microcontroller with a dual-core Xtensa LX7 processor clocked up to 240 MHz supports 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 LE, enabling wireless communication in networked and mobile applications.

The board includes a 3.97" e-Paper display with a resolution of 800 × 480 px. e-Ink technology ensures wide viewing angles, high contrast and a paper-like appearance without backlight. Power consumption occurs mainly during screen refresh, supporting long-term battery-powered operation in information displays, environmental monitoring systems and portable terminals.

The version with battery features a 3.7 V Li-Ion cell connected via an MX1.25 connector and a TG28 power management IC handling charging and battery control through the USB Type-C port. An MX1.25 RTC backup battery header maintains timekeeping when the main lithium battery is disconnected.

Integrated peripherals include a microphone, ES8311 low-power audio codec, NS4150B audio amplifier, QMI8658 6-axis IMU (3-axis gyroscope and 3-axis accelerometer), PCF85063 RTC, and SHTC3 temperature and humidity sensor. A TF (microSD) card slot enables local data storage. Support for ESP-IDF and Arduino IDE facilitates rapid implementation of display, sensing and AI voice interaction projects.

1. ESP32-S3-WROOM-1-N16R8 - Wi-Fi and Bluetooth SoC, 240MHz operating frequency, with integrated 8MB Flash and 16MB PSRAM
2. SHTC3 temperature and humidity sensor - provides ambient temperature and humidity measurement, enabling environmental monitoring function
3. PCF85063 - RTC chip with timekeeping function
4. Rotary button - supports customizable button functions in three directions
5. PWR button - enables power control via software configuration when using Lithium Batt for power supply
6. BOOT button - press it when powering on to enter download mode
7. NS4150B - Audio amplifier chip
8. ES8311 - low-power audio codec chip
9. QMI8658 - 6-axis IMU includes a 3-axis gyroscope and a 3-axis accelerometer
10. MX1.25 speaker header
11. MX1.25 RTC backup Batt header - for powering the RTC when the main Lithium Batt is not connected
12. MX1.25 Lithium Batt header - MX1.25 2PIN connector for connecting 3.7V Lithium Batt, supports charging and discharging
13. 3.97inch e-paper display interface
14. TG28 - highly integrated power management chip
15. Microphone
16. Type-C port
17. TF card slot

Features

• Microcontroller
  • Chip: ESP32-S3R8 (Xtensa LX7, dual-core)
  • Clock frequency: up to 240 MHz
  • ROM: 384 KB
  • SRAM: 512 KB
  • Flash memory: 16 MB
  • PSRAM: 8 MB
• Wireless connectivity
  • Wi-Fi: 2.4 GHz (802.11 b/g/n)
  • Bluetooth: 5 LE
  • Antenna: onboard
• e-Paper display
  • Diagonal size: 3.97"
  • Resolution: 800 × 480 px
  • Colors: black, white, red
  • Grayscale: 4 levels
  • Active area: 86.40 × 51.84 mm
  • Viewing angle: >170°
  • Fast refresh time: 2.8 s
  • Full refresh time: 3.5 s
  • Partial refresh time: 0.6 s
  • Power consumption during refresh: <40 mW
• Audio and voice interaction
  • Microphone: onboard
  • Audio codec: ES8311
  • Audio amplifier: NS4150B
  • Speaker connector: MX1.25
  • Support for voice applications and AI voice interaction
• Sensors and RTC
  • IMU: QMI8658 (3-axis accelerometer, 3-axis gyroscope)
  • RTC: PCF85063
  • Temperature and humidity sensor: SHTC3
• Power supply and management
  • Operating voltage: 3.3 V
  • Battery connector: MX1.25 2-pin for 3.7 V Li-Ion
  • Battery charging: via USB Type-C
  • Power management IC: TG28
  • RTC backup connector: MX1.25 header
• Memory and interfaces
  • TF slot: microSD (FAT32 support)
  • USB port: USB Type-C (programming and logging)
  • Buttons: PWR, BOOT
  • Control element: 3-direction rotary switch
• Physical parameters
  • Weight: 0.108 kg

Kit includes

• ESP32-S3-ePaper-3.97 ×1
• 8 Ω 1 W speaker ×1
• 3.7 V Li-Ion battery ×1