ESP32-S3-RS485-WLED

Based on ESP32-S3, Supports Wi-Fi / Bluetooth / Isolated RS485 / Audio

Ideal for learning and developing WLED smart lighting, AI voice interaction, and IoT applications

Features:

• Based on ESP32-S3-WROOM-1-N16R8 module with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz
• Integrated 2.4GHz Wi-Fi and Bluetooth 5 (LE) wireless communication for wireless control, device networking, and IoT application development
• Equipped with 16MB Flash and 8MB PSRAM, providing ample storage and runtime resources for lighting effects, audio processing, and complex application development
• Onboard LED strip data output interfaces with 5V level shifting, supporting various digital LED strips for WLED, ambient lighting, and customized lighting effect applications
• Integrates an isolated RS485 communication interface for connecting sensors, PLCs, Modbus devices, and other equipment
• Onboard RS485 TX/RX status indicators for easy monitoring of data transmission and reception during debugging
• Onboard unibody power supply isolation, providing stable isolated voltage, no extra power supply is required for the isolated terminal
• Integrates the ES7210 audio ADC and ES8389 audio codec, supporting multi-channel microphone input and stereo audio output for AI voice, voice interaction, and other applications
• Onboard 3.5mm audio jack and PH2.0 4pin speaker connector for audio input and output applications
• Supports a wide input voltage range of 5 ~ 24V
• Onboard USB Type-C port for programming and debugging
• Provides multiple GPIO expansion interfaces and user buttons for connecting sensors, actuators, and other peripherals
• Supports development with ESP-IDF, Arduino, and other development environments, with example programs and development resources provided for quick setup and secondary development
• Rail-mounted protective case, easy to install, safe to use

Specifications:

• Module : ESP32-S3-RS485-WLED
• Microcontroller : ESP32-S3-WROOM-1-N16R8
• Antenna : Onboard PCB antenna
• Wireless communication : 2.4GHz WiFi (802.11 b/g/n), Bluetooth 5 (LE)
• power supply Screw terminal : Voltage range : 5V ~ 24V
• WLED LED Output : Maximum Output : 8A (adequate heat dissipation required)
• Output Channels : 2 LED outputs (GPIO2, GPIO16)
• Supported LED Strip : WS2812B / WS2811 / SK6812 / TM1814 / SM16704 / APA102 / SK9822 / single-color LED strips, etc.
• Control Method : WLED open-source firmware (Web-based control); supports color, brightness, dynamic effects, segment control, presets, and more
• USB : Connector : USB Type-C
• Power supply : 5V
• Functions : USB communication, firmware downloading, etc.
• ISOLATED RS485 : Connector : Screw terminal
• Direction control : Automatically controlled via main controller hardware flow settings
• Protection : TVS diode, surge protection & ESD protection
• Resistor : Onboard reserved 120R matching resistor, NC by default, enabled via jumper
• LED indicators : PWR indicator : Red power indicator, lights up when there is USB connection and voltage is detected
• RS485 indicators : TXD: lights up green when the RS485 port sends data
• RXD: lights up blue when the RS485 port receives data
• Appearance : Enclosure : Rail-mount protective case
• Dimensions : 81.9 × 54.0 × 32.0mm

Compatible with WLED firmware for easy smart lighting control

Supports a variety of LED strips

Compatible with mainstream programmable LED strips to meet the needs of various lighting applications

         4000K-20-12V-480D-5M                              RGB-27-5V-160D-1M                          RGBWC-150-24V-IP65-1428D-1M

Supported LED Strip

• LED Strip Type : WS2812B / SK6812 : WS2811 / UCS1903 : TM1814 / SM16704 : APA102 / SK9822 : Single-Color Constant-Voltage LED Strip
• LED Strip Category : Single-Wire Digital LED Strip : External-IC Digital LED Strip : RGBW Digital LED Strip : Two-Wire Digital LED Strip : Analog Single-Color LED Strip
• Typical Voltage : 5V : 12V / 24V : 12V / 24V : 5V : 5V / 12V / 24V
• Signal Type : Single-Wire Data : Single-Wire Data : Single-Wire RGBW Data : DATA + CLK : PWM Dimming
• GPIOs Required : 1 : 1 : 1 : 2 : -
• Pixel Configuration : 1 LED per Pixel : Typically Multiple LEDs per Pixel : Typically Multiple LEDs per Pixel : 1 LED per Pixel : Whole-Strip Synchronous Dimming
• Addressable : Yes : Group Addressable : Group Addressable : Yes : No
• Typical Applications : Pixel Lighting, Ambient Lighting : Long LED Strips, Linear Lighting : RGBW Dynamic Lighting : High-Refresh-Rate Dynamic Lighting Effects : Single-Color Lighting, Dimming

Note:

• The VOUT voltage follows the external power supply voltage. Use a 5V power supply for 5V LED strips, a 12V power supply for 12V LED strips, and a 24V power supply for 24V LED strips. Do not mix LED strips with different voltage ratings.
• When using digital LED strips, connect the LED strip GND to the controller board GND; otherwise, the data signal may be unstable.

Light Strip Wiring Diagram

Supports External Speakers

Features a reserved 4pin speaker connector for connecting an 8Ω 5W speaker, or a speaker system via the 3.5mm audio jack.

            Connecting to external speaker                                        Connecting to external speaker system

Wi-Fi and BLE 5 support

ESP32-S3 integrates 2.4GHz Wi-Fi (802.11 b/g/n) with 40MHz of bandwidth support,

Its Bluetooth Low Energy subsystem supports Bluetooth 5 (LE) and Bluetooth Mesh

Supports AI Speech Interaction

Allows access to online large model platforms such as DeepSeek, Doubao, etc.

Supports ESP-IDF, Arduino IDE

Comprehensive ESP-IDF and Arduino tutorials for easy learning. Facilitates secondary development and function expansion, accelerating application deployment

Interface Description:

• Top Terminal Block Description : Bottom Terminal Block Description
• Power Supply Terminal : Power positive: DC 5V ~ 24V : RS485 Terminal : RS485 A+ signal pin
• Power negative
• Type-C : For firmware download and USB communication : RS485 B- signal pin
• SH1.0 : GND : Ground (GND) : GPIO Terminal : GPIO2' (5V operating level)
• 3V3 : 3.3V power output : GPIO16' (5V operating level)
• GPIO3 : Adapting ESP32-S3 IO pin : Output Terminal : Output power supply positive
• GPIO4 : Adapting ESP32-S3 IO pin : Output power supply negative; disabled by default
• Headphone Jack : 3.5mm headphone jack

• ESP32-S3-WROOM-1-N16R8 module : Integrates 2.4GHz Wi-Fi and Bluetooth 5, with a dual-core processor running at up to 240MHz, 16MB Flash, and 8MB PSRAM
• ES8389 Audio Codec : Used for audio signal capture, processing, and output
• ES7210 Audio ADC : Used for microphone audio capture and audio signal analog-to-digital conversion
• RS485 transceiver chip
• NS4150B : Audio power amplifier
• Blade Fuse
• Power supply screw terminal : supports 5 ~ 24V wide voltage input
• RS485 communication terminal : for connecting external RS485 devices
• GPIO terminal
• Power output terminal
• Dual-Microphone array : Designed for voice capture and speech recognition applications
• LED indicators : PWR: Power indicator
• TXD: lights up green when the RS485 port sends data;
• RXD: lights up blue when the RS485 port receives data
• PH2.0 4pin speaker connector
• Headphone jack
• USB Type-C port : for module firmware downloading and USB communication
• RS485 matching resistor : Onboard reserved 120R matching resistor, enabled via jumper
• BOOT button : Programmable for other functions
• RESET button
• Digital Isolation : for reduced interference from external signals to the control chip
• Power isolation module

Application Scenarios

With a wide range of interfaces, the board can be used in various applications, including smart lighting control, industrial communication, environmental monitoring, and interactive audio. Reserved GPIO pin headers for further development and DIY customization

Outline dimensions:

Resources & Services:

Documentations:

• Wiki

Package Includes:

• 1 x ESP32-S3-RS485-WLED
• 1 x DC 5.5×2.1mm female power adapter
• 1 x Screwdriver