Ethernet Relay Board

If you want a faster, modern and powerful STM32 board with Ethernet connection, this board is for you. You can use it for various applications, from home projects to industrial use. It also as a great educational tool for learning about 32-bit application development. The board is powered by STM32 F411RE MCU, which features a 32-bit ARM Cortex® M4 core, W5500 Ethernet chip.

Communication

Thanks W5500 Ethernet chip allows you to have a wired Ethernet connection between your board and Internet. This permit you to control until 16 Relay, each relay provide 1 contact NO (Normally Open) with a voltage equal to the supply voltage (Vin). A current sensor ACS711 allow you to measure total current consumption. A jack 3.5 mm is present and allow you to connect a temperature sensors or any oneWire sensors. The DIP switch is useful for an efficient deployment, in fact, you can assign an IP address thanks to the DIP switch without changing firmware.

The computer talk to the device thanks to UDP protocol, the specifications are as follows (check source code for more details) :

Features

• STM32F411RE Microprocessor, 32-Bit ARM Cortex
• W5500 Ethernet module
• 16 Relays Output
• 1x Jack connector
• ACS711 current sensors
• 2x16 Terminals fast connector 24 AWG

Specification

• DC Current 100μA/MHz
• Clock speed up to 100 MHz
• 512KB Flash Memory
• 128KB SRAM
• Ethernet 802.3 10/100 Mbit/s
• Relays outputs: 16 x 3A maximum
• Input Voltage: (Vin) 16-30V
• Dimension: 200mm x 80mm x 35mm
• Weight: 250 g