ESP32-S3-RS485-CAN
- ESP32-S3-RS485-CAN (Onboard Antenna)
- ESP32-S3-RS485-CAN-U (External Antenna)
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| SKU | Product |
|---|---|
| 32154 | ESP32-S3-RS485-CAN |
| 34781 | ESP32-S3-RS485-CAN-U |
Product Overview
ESP32-S3-RS485-CAN is an industrial-grade Wi-Fi wireless communicator based on the ESP32-S3 main controller, supporting peripheral interfaces such as Wi-Fi, Bluetooth, RS485, and CAN. It has built-in protection circuits such as power isolation and optocoupler isolation, making it safe, stable, and more reliable, and is suitable for the AIoT field.
Features
- Based on ESP32-S3 microcontroller with Xtensa 32-bit LX7 dual-core processor with frequency up to 240 MHz
- Integrated 2.4 GHz WiFi and Bluetooth LE dual-mode wireless communication, with superior RF performance
- Onboard isolated RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors
- Onboard USB Type-C port for power supply, firmware downloading and debugging, making development more convenient
- Onboard power supply screw terminal, allows 7~36V DC wide range input
- Onboard digital isolation to avoid external signal interference with the control chip
- Onboard integrated power isolation, providing stable isolation voltage, no extra power supply required for the isolated terminal
- Onboard power supply, RS485 TX/RX indicator and CAN indicator for easy monitoring of the operating status of the device
- Rail-mounted ABS protective Case, easy to install, safe to use
Specifications
| Model | ESP32-S3-RS485-CAN | ESP32-S3-RS485-CAN-U | |
|---|---|---|---|
| Antenna Interface | Onboard chip ceramic antenna | External antenna | |
| Microcontroller | ESP32-S3 (ESP32-S3R8 chip by default, customizable) | ESP32-S3 (ESP32-S3R8 chip by default, customizable) | |
| Wireless Communication | 2.4 GHz Wi-Fi (802.11 b/g/n), Bluetooth 5 (LE) | 2.4 GHz Wi-Fi (802.11 b/g/n), Bluetooth 5 (LE) | |
| USB Interface | Interface Type | USB Type-C | USB Type-C |
| Supply Voltage | 5V | 5V | |
| Function | Device power supply, USB communication, firmware download, etc. | Device power supply, USB communication, firmware download, etc. | |
| Isolated RS485 Communication Interface | Interface Type | Screw terminal | Screw terminal |
| Direction Control | Automatically controlled via main controller hardware flow setting | Automatically controlled via main controller hardware flow setting | |
| Interface Protection | Provides TVS diode protection, surge and ESD protection | Provides TVS diode protection, surge and ESD protection | |
| Matching Resistor | NC by default; reserved 120R matching resistor, can be enabled with a jumper cap | NC by default; reserved 120R matching resistor, can be enabled with a jumper cap | |
| Isolated CAN Communication Interface | Interface Type | Screw terminal | Screw terminal |
| Direction Control | Hardware automatically determines and controls the data transmission direction | Hardware automatically determines and controls the data transmission direction | |
| Interface Protection | Provides TVS diode protection, surge and ESD protection | Provides TVS diode protection, surge and ESD protection | |
| Matching Resistor | NC by default; reserved 120R matching resistor, can be enabled with a jumper cap | NC by default; reserved 120R matching resistor, can be enabled with a jumper cap | |
| Indicator Lights | PWR | Power indicator light; when USB is connected and voltage is detected, the red light turns on | Power indicator light; when USB is connected and voltage is detected, the red light turns on |
| RS485 | RS485 indicator light: when data is sent from the RS485 interface, the green light turns on; when data is returned from the RS485 interface, the blue light turns on | RS485 indicator light: when data is sent from the RS485 interface, the green light turns on; when data is returned from the RS485 interface, the blue light turns on | |
| CAN | CAN indicator light; flashes when data communication exists on the CAN interface | CAN indicator light; flashes when data communication exists on the CAN interface | |
| Terminal Power Supply | Supply Range | 7 - 36 V | 7 - 36 V |
| Product Appearance | Enclosure | DIN-rail protective case | DIN-rail protective case |
| Dimensions | 91.6 × 23.3 × 58.7 (mm) | 91.6 × 23.3 × 58.7 (mm) |
Onboard Resources
- ESP32-S3 Up to 240 MHz, equipped with 2.4 GHz Wi-Fi and Bluetooth LE
- DC-DC power module Power module, supports up to 3.3 V 2 A output
- Pin header interface Can connect other function modules via pin headers
- Power supply screw terminal Supports DC 7~36 V wide voltage input
- USB Type-C port Can be used for device power supply, firmware download, and USB communication
- RTC battery header Connects a rechargeable RTC battery (SH1.0)
- Onboard ceramic antenna External antenna version: can be switched to use the chip antenna by desoldering a resistor
- IPEX 1 connector Onboard chip antenna version: can be switched to use an external antenna by desoldering a resistor
- 16MB Flash
- Digital isolation Prevents external signals from interfering with the control chip
- CAN transceiver chip
- LED indicators PWR: power indicator light; RS485: when data is sent from the RS485 interface, the green light turns on, and when data is returned from the RS485 interface, the blue light turns on; CAN: CAN indicator light, flashes when data communication exists on the CAN interface
- ESP32 BOOT button
- ESP32 RESET button
- Power isolation Provides stable isolation voltage, no additional power supply required on the isolated side
- RS485 matching resistor Reserved 120R matching resistor, can be enabled with jumper cap
- CAN matching resistor Reserved 120R matching resistor, can be enabled with a jumper cap
- RS485 & CAN communication terminal Supports connecting external RS485 devices and CAN devices
- RTC chip PCF85063 RTC clock
- DC-DC power chip
- ME6217C33M5G Low dropout LDO, current (Max) 800mA
- RS485 transceiver chip
- TVS diode (Transient Voltage Suppressor) Effectively suppresses surge voltage and transient spike voltage in the circuit
Interface Introduction
| Position | Terminal | Description |
|---|---|---|
| Upper Terminal | Power Terminal | Power positive: DC 7 - 36 V |
| Power negative | ||
| Type-C | Can be used for device power supply, firmware download, and USB communication | |
| SH1.0 | GND: ground wire | |
| 3V3: 3.3 V power output | ||
| GPIO2: exposed I/O | ||
| GPIO1: exposed I/O | ||
| Lower Terminal | RS485 Terminal | A+ signal pin |
| B- signal pin | ||
| CAN Terminal | H signal pin | |
| L signal pin |
Dimensions
danger
Warning: This product is intended only for lawful development, learning, research, and industrial use. It is strictly prohibited to connect to any CAN bus for unauthorized cracking, tampering, unlocking, or function hijacking. Such actions may constitute illegal offenses. The user shall bear all legal liability and consequences of any incidents, and the company assumes no responsibility. We also provide no technical support for such applications.