ESP32-Ethernet-Kit is a modular Ethernet development platform designed for wired + wireless IoT applications. It is powered by the ESP32-WROVER series Wi-Fi/Bluetooth dual-mode module and paired with the IP101GRI 10/100 Mbps Ethernet PHY chip. Ele suporta PoE (Alimentação pela Ethernet), making it an ideal choice for developing industrial gateways, network monitoring devices, and smart home control centers.
1. Posicionamento e arquitetura central
ESP32-Ethernet-Kit adopts a dual-board modular design consisting of two independent development boards that can be used separately or combined:
| Módulo | Core Components | Main Functions |
|---|---|---|
| Ethernet Board A | Módulo ESP32-WROVER-E/B + IP101GRI PHY | Wi-fi + Bluetooth dual-mode wireless, 10/100 Mbps wired Ethernet, Expansão GPIO |
| PoE Board B | IEEE 802.3af compliant PoE power module | Powers the system via Ethernet cable without an external power adapter |
Core chip specifications:
- ESP32-WROVER-E/B: Dual-core Xtensa LX6 processor (240 MHz), integrated 4 MB/8 MB SPI Flash, 8 MB PSRAM (opcional)
- Sem fio: 2.4 Wi-Fi de GHz (802.11 b/g/n) + Bluetooth 4.2/BLE dual-mode
- Ethernet: IP101GRI single-port 10/100 Mbps adaptive Ethernet transceiver, supports MII/RMII interface
2. Hardware Features in Detail
1. Network Connectivity
- RJ45 Ethernet Interface: Supports auto-negotiation (10/100 Mbps, full/half duplex) with integrated magnetics
- Wi-fi + Bluetooth Antenna: Antena PCB integrada, optional external antenna (depending on version)
- Network Protocol Support: TCP/IP, UDP, HTTP, MQTT, CoAP, supports static IP and DHCP
2. Opções de fonte de alimentação
- PoE Power Supply: Via PoE Board B, compliant with IEEE 802.3af, até 15.4 W power
- USB Type-C Power: 5 V DC input, supports power and data
- External Power Input: Supports 5–12 V DC adapter
- Gerenciamento de energia: Integrated high-efficiency DC-DC converters providing stable 3.3 V/5 V outputs with overcurrent protection
3. Interfaces de Expansão e Controle
| Tipo de interface | Quantidade | Descrição da função |
|---|---|---|
| GPIO Pins | 20+ | Supports I2C, IPS, UART, PWM, ADC, sensores e atuadores externos |
| Botões de função | 2 | Botões definidos pelo usuário (interruptor de modo, reiniciar, etc.) + 1 botão de reinicialização do sistema |
| Indicadores LED | 3 | LED de energia, LED de atividade/link Ethernet, LED do usuário |
| USB tipo C | 1 | Programação, depuração, e transferência de dados com USB Serial/JTAG |
| Slot de expansão | 1 | Slot de expansão compatível com Arduino Uno Shield |
| Portas seriais | 2 | Equipamento UART, suporta RS232/RS485 via shifter de nível externo |
4. Outros recursos de hardware
- Suporte para atualização de firmware OTA: Atualize o firmware via Wi-Fi ou Ethernet para fácil manutenção
- Mecanismo de criptografia de hardware: AES-256, RSA, SHA e outros algoritmos de criptografia para proteger a transmissão de dados
- Design de nível industrial: Faixa de temperatura operacional -40°C a +85°C
- 5Compatibilidade Lógica V/3.3V: Todos os pinos GPIO são tolerantes a 5V, reduzindo riscos de design de hardware
3. Ambiente de suporte e desenvolvimento de software
1. Quadros Oficiais de Desenvolvimento
- ESP-IDF: Espressif official IoT development framework with full Ethernet drivers, Wi-Fi/Bluetooth stacks, and peripheral APIs
- LWIP Stack: Integrated lightweight TCP/IP stack for Ethernet and Wi-Fi networking
- MQTT Libraries: Supports MQTT v3.1.1/v5.0 for cloud platforms (AWS IoT, Alibaba Cloud IoT, etc.)
2. Suporte ao desenvolvimento de terceiros
- Suporta Arduíno, MicroPython, Circuito Python, lowering the development barrier
- Rich open-source libraries for networking, data acquisition, and device control
- Suporta Ethernet-to-Wi-Fi bridging, converting wired devices into Wi-Fi clients
3. Typical Development Workflow
- Configure Ethernet and Wi-Fi parameters using ESP-IDF
- Develop applications for data acquisition, network communication, or device control
- Flash and debug firmware via USB Type-C
- Deploy in real-world scenarios with OTA remote updates
4. Cenários típicos de aplicação
1. Industrial IoT Gateway
- Serial/Modbus to Ethernet/Wi-Fi: Connect PLCs, sensores, and drives for data upload and remote control
- Protocol conversion: Modbus RTU/TCP, MQTT, OPC UA, etc..
- Computação de ponta: Local processing of sensor data to reduce cloud load and improve response time
2. Smart Home Control Hub
- Com fio + wireless hybrid gateway for unified control of Wi-Fi devices and wired appliances
- Home security center: Connect cameras, door/window sensors, alarms via Ethernet
- Energy management: Monitor power usage and remotely control smart plugs and lighting
3. Network Monitoring Devices
- IP camera: Works with camera modules (por exemplo, OV2640) for wired video streaming and storage
- Environmental monitoring station: Upload temperature, umidade, air quality, and light data via Ethernet
- Smart locks: Cloud-connected door locks with remote access control and log tracking
4. Other Applications
- Network printer server: Convert standard printers into network printers for multi-device sharing
- FTP server: SD card storage expansion for file upload/download
- Network time server: NTP-based time synchronization for other devices
5. Key ESP32 Advantages in This Product
| Vantagem | Application Value |
|---|---|
| Dual-core Processor | Handles networking and applications simultaneously for faster response and concurrency |
| Wi-fi + Modo duplo Bluetooth | Flexible connectivity for device-to-device and cloud communication |
| Low Power Design | Multiple sleep modes for battery or PoE-powered applications |
| Interfaces periféricas ricas | Easy sensor and actuator integration |
| Strong Development Ecosystem | Mature toolchain and open-source libraries reduce development time |
| Hardware Security Features | Protects industrial data and user privacy |
6. Visão geral rápida das especificações
| Parâmetro | Especificação |
|---|---|
| Processador | Xtensa LX6 de núcleo duplo, até 240 MHz |
| Memória | 520 KB SRAM, 4 MB/8 MB Flash, 8 MB PSRAM (opcional) |
| Ethernet | 10/100 Mbps adaptativo, Auto MDI-X |
| Alcance sem fio | Wi-fi: 100 eu (área aberta), BLE: 50 eu (área aberta) |
| Fonte de energia | PoE (802.3af), USB Type-C 5V, external 5–12 V DC |
| Temperatura operacional | -40°C a +85°C (classe industrial) |
| Dimensões | Ethernet Board A: ~100 mm × 60 milímetros, PoE Board B: ~100 mm × 60 milímetros |
| Peso | ~50 g (total para ambas as placas) |
Resumo
ESP32-Ethernet-Kit é um kit abrangente com fio + plataforma de desenvolvimento IoT sem fio. Seu design modular de placa dupla oferece grande flexibilidade, suportando aplicações desde redes simples até gateways industriais complexos.
Seja para desenvolvimento de produtos comerciais ou projetos de fabricantes, atende aos requisitos de estabilidade da rede, segurança de dados, e capacidade de expansão – tornando-o uma ponte ideal entre equipamentos industriais tradicionais e sistemas IoT modernos.
