I. Product Overview
This product uses the ESP32-S3 as the main controller, features an onboard HUB75 interface, and can directly connect to HUB75 RGB LED matrices for display control. It also includes a Micro SD card slot for storing images, audio, and other files, enabling offline content playback. The onboard ES7210 audio ADC chip enhances voice processing, while the ES8311 low-power audio codec supports high-quality audio input/output. Dual silicon microphones and a speaker interface enable voice interaction applications. The onboard RTC real-time clock chip and reserved SH1.0 connector for a battery support time retention after power-off. Reserved ESP32-S3 debug and expansion pins (TX0, RX0, IO45, IO46, RST, BOOT) facilitate serial debugging, firmware download, function expansion, and system reset control.
II.Product Features
- Onboard ESP32-S3-WROOM-1-N16R8 module with Xtensa® 32-bit LX7 dual-core processor, up to 240MHz, supporting 2.4GHz Wi-Fi and Bluetooth 5 LE; 16MB Flash and 8MB PSRAM – ideal for RGB LED matrix display, image/animation caching, audio interaction, and IoT applications.
- Two HUB75 interfaces: one for ribbon cable connection, one for direct plug-in – flexible connection options for displaying text, images, animations, clocks, status info, etc.
- Two Type-C ports: one for board power, matrix power, and program download/debugging; another (Power Type-C) dedicated for powering the HUB75 RGB LED matrix only.
- VH-4P terminal for supplying 5V power to the RGB LED matrix.
- ES7210 chip for enhanced voice processing.
- ES8311 low-power audio codec for high-quality audio input/output.
- Dual silicon microphones and speaker interface for sound capture, playback, and voice interaction.
- Micro SD card slot for storing images and audio files – supports offline display, media playback, and local data logging.
- PCF85063 RTC real-time clock chip with battery connector for time retention after power-off.
- I2C expansion interface for additional functionality.
- 3-way thumb wheel switch, EN/BOOT buttons, and breakout pins for BOOT, RST, IO45, IO46, TXD, RXD – easy debugging, expansion, and project integration.
III.Product Parameters
| Parameter | Description |
|---|---|
| Model | RGB Matrix HUB75 S3 |
| Supply Voltage | 5V |
| Power Input Interfaces | Two Type-C 5V inputs (one for board, one dedicated for matrix) |
| Power Output Interface | VH-4P (3.96mm pitch), max 5V/4A |
| RGB LED Matrix Interface | HUB75 |
| Mounting Hole Diameter | 2.5mm |
| Dimensions | 65mm(L) x 57.5mm(W) |

3.1 Module Resources
- Power indicator
- 3-way thumb wheel switch (PCA9557 expanded keys)
- 1mm pitch 4-pin I2C expansion connector (SDA = IO1, SCL = IO2)
- EN / BOOT buttons (EN = reset, BOOT = download mode)
- USB-C interface (board power, download, debug)
- Power Type-C interface (dedicated matrix power)
- Breakout pins: BOOT, RST, IO45, IO46, TXD, RXD
- Speaker connector
- Dual microphones
- VH-4P connector (matrix power)
- HUB75 connector (box header for ribbon cable)
- M2.5 mounting holes
- SH1.0 connector (RTC battery)
- Micro SD card slot
- ESP32-S3-WROOM-1-N16R8
- HUB75 connector (2×8 pin header with bumps for direct plug-in)
Wiki
https://seengreat.com/wiki/214/
Package Contents
①RGB Matrix HUB75 S3 V1.0 ×1
②Ribbon cable ×1
③Power cable ×1
④Type-C data cable ×1
⑤35mm x 25mm cavity speaker ×1





