ESP32-S3-PhotoPainter 7.3inch E6 Full Color E-paper Display With Solid Wood Photo Frame, Ultra-long - Waveshare 32408

Description

ESP32-S3-PhotoPainter is an AIoT digital photo frame based on the ESP32-S3 microcontroller, featuring a 7.3-inch full-color E Ink Spectra 6 (E6) e-paper display with a resolution of 800 × 480 px, housed in an aesthetic solid wood frame. The device is designed for ultra-low power consumption—power is required mainly during screen refresh, while the displayed content remains visible without continuous power draw.

At its core is a dual-core ESP32-S3 microcontroller (Xtensa LX7, up to 240 MHz) with support for 2.4 GHz Wi-Fi and Bluetooth 5 LE, enabling network communication, AIoT integration, and remote content updates. The board includes 16 MB Flash and 8 MB PSRAM, providing sufficient resources for graphics processing, audio handling, and application logic.

The display uses E6 Full Color technology, supporting six primary colors with dithering algorithms to achieve high contrast, saturated images with a characteristic “paper-like” appearance. The module integrates audio codecs, a dual-microphone array, an RTC, an SHTC3 temperature and humidity sensor, a TF (microSD) card slot, and an advanced power management system, enabling functions such as:

• digital photo frame
• display of environmental information (temperature and humidity)
• AI voice interaction
• AI-based text-to-image generation

The version with a 3.7 V lithium battery allows autonomous operation without a constant power supply, offering very long standby time and thousands of screen refreshes on a single charge (without additional high-power peripherals). The enclosure, styled as a classic photo frame, includes a rotatable desktop stand and a wall-mount hook.

1. ESP32-S3-WROOM-1-N16R8 - Wi-Fi and Bluetooth SoC, 240MHz operating frequency, with integrated 16MB Flash and 8MB PSRAM
2. SHTC3 temperature and humidity sensor - provides ambient temperature and humidity measurements, enabling environmental monitoring function
3. ES7210 ADC audio decoder chip - high-performance and low-power consumption audio ADC, supports multiple-channel microphone inputs
4. ES8311 DAC audio encoder chip - high-performance and low-power consumption audio DAC
5. AXP2101 - highly integrated power management chip
6. TF card slot - supports FAT32-formatted TF card for data expansion
7. MX1.25 2PIN speaker header - audio output signal, for connecting external speaker
8. MX1.25 2PIN Lithium battery header - for connecting Lithium battery
9. MX1.25 2PIN RTC backup battery header - supports rechargeable RTC batteries only 
10. KEY button - for custom function
11. BOOT button - press it when powering on to enter download mode
12. PWR power button - for system power supply ON/OFF
13. PCF85063 - RTC chip, for time keeping function
14. Dual-microphone array design - dual microphone array, supporting richer voice interaction functions 
15. Type-C port - for program burning and log printing

Features

• Microcontroller: ESP32-S3
• Architecture: Dual-core 32-bit Xtensa LX7
• Clock frequency: up to 240 MHz
• Wireless connectivity: Wi-Fi 2.4 GHz, Bluetooth 5 LE
• SRAM: 512 kB
• ROM: 384 kB
• Flash memory: 16 MB
• PSRAM: 8 MB
• Display type: E-paper (E Ink Spectra 6, E6 Full Color)
• Display size: 7.3 inches
• Resolution: 800 × 480 px
• Display colors: black, white, green, blue, red, yellow
• Grayscale levels: 2
• Active area: 160.0 × 96.0 mm
• Pixel pitch: 0.2 × 0.2 mm
• Viewing angle: >170°
• Refresh time: approx. 12 s
• Sleep current: ≤ 1 mA
• Power consumption: energy mainly consumed during screen refresh
• Display technology: E Ink Spectra 6 (E6), color dithering
• Image characteristics: high contrast, high color saturation, paper-like effect
• RTC: PCF85063
• Temperature & humidity sensor: SHTC3
• Power management IC: AXP2101
• Audio codecs:
  • ES7210 – ADC (audio input, microphones)
  • ES8311 – DAC (audio output)
• Microphones: dual microphone array
• Audio output: MX1.25 speaker connector
• Memory card slot: TF (microSD, FAT32)
• Power supply:
  • Operating/charging voltage: 5 V
  • Battery connector: MX1.25 (3.7 V)
  • RTC backup power: separate rechargeable RTC battery connector
• Enclosure: solid wood photo frame
• Mounting options:
  • Rotatable desktop stand
  • Wall-mount hook
• Overall dimensions: 154.0 × 214.0 × 32.0 mm
• Intended use: digital photo frame, AIoT, information displays, smart home
• Software: open source

Kit includes

• ESP32-S3-PhotoPainter
• Card reader
• Screen protective film
• USB Type-A to Type-C cable (~1 m)
• 8 Ω / 2 W speaker
• Wall-mount hook (2 pcs, 1 pre-installed)
• Case opening tool
• 16 GB TF card
• 3.7 V lithium battery