
This circuit enables Ethernet connectivity and device control through an ESP32 microcontroller. It uses the W5500 Ethernet module for network communication and controls an 8-channel relay module for switching external devices or loads.

The Wiznet W5500 Mini Ethernet is a compact Ethernet module designed to provide a network interface for microcontrollers. It supports a wide range of protocols, including TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE, making it an ideal choice for various IoT applications. This module allows microcontrollers to connect to the internet or local networks, enabling remote monitoring, control, and data exchange.

This circuit enables Ethernet connectivity and device control through an ESP32 microcontroller. It uses the W5500 Ethernet module for network communication and controls an 8-channel relay module for switching external devices or loads.

This circuit connects a Raspberry Pi 5 to a W5500 Ethernet module, enabling Ethernet connectivity. The Raspberry Pi communicates with the W5500 via SPI interface, and a resistor is used to manage the reset signal for the Ethernet module.

This circuit features an ESP32 microcontroller interfaced with a W5500 Ethernet module for network connectivity, a DHT22 sensor for measuring temperature and humidity, a ZMPT101B module for AC voltage sensing, and an Adafruit SHTC3 sensor for additional temperature and humidity readings. The ESP32 also controls a 4-channel relay module for switching external devices. The sensors and Ethernet module communicate with the ESP32 via GPIO pins, with the W5500 using SPI and the SHTC3 using I2C. Common ground and power lines are shared among the components.

This circuit is designed for environmental monitoring and home automation, featuring an ESP32 microcontroller connected to a W5500 Ethernet module, DHT22 and Adafruit SHTC3 sensors for temperature and humidity readings, a ZMPT101B module for voltage sensing, and a 4-channel relay for controlling external devices. Network connectivity enables remote data access and control functions.
| Parameter | Value |
|---|---|
| Supply Voltage | 3.3V |
| Operating Current | 132mA (typical) |
| Network Protocols | TCP, UDP, IPv4, ICMP, ARP, IGMP, PPPoE |
| Data Rate | 10/100 Mbps |
| Interface | SPI |
| Operating Temperature | -40°C to 85°C |
| Dimensions | 23mm x 25mm |
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | 3.3V | Power Supply (3.3V) |
| 3 | SCK | SPI Clock |
| 4 | MISO | Master In Slave Out (SPI) |
| 5 | MOSI | Master Out Slave In (SPI) |
| 6 | CS | Chip Select (SPI) |
| 7 | INT | Interrupt Output |
| 8 | RST | Reset |
| W5500 Pin | Arduino UNO Pin |
|---|---|
| GND | GND |
| 3.3V | 3.3V |
| SCK | D13 |
| MISO | D12 |
| MOSI | D11 |
| CS | D10 |
| INT | D2 (optional) |
| RST | D9 |
#include <SPI.h>
#include <Ethernet2.h>
// MAC address for the Ethernet shield
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
// IP address for the Ethernet shield
IPAddress ip(192, 168, 1, 177);
// Initialize the Ethernet client library
EthernetClient client;
void setup() {
// Start the serial communication
Serial.begin(9600);
// Initialize the Ethernet shield with the MAC address and IP address
Ethernet.begin(mac, ip);
// Give the Ethernet shield a second to initialize
delay(1000);
// Print the IP address
Serial.print("IP Address: ");
Serial.println(Ethernet.localIP());
}
void loop() {
// Check for incoming client connections
if (client.connect("example.com", 80)) {
// Send an HTTP GET request
client.println("GET / HTTP/1.1");
client.println("Host: example.com");
client.println("Connection: close");
client.println();
}
// Wait for a response from the server
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.print(c);
}
}
// Close the connection
client.stop();
// Wait for 10 seconds before making another request
delay(10000);
}
No Network Connection:
Unable to Obtain IP Address:
Intermittent Connectivity:
By following this documentation, users can effectively integrate the Wiznet W5500 Mini Ethernet module into their projects, enabling robust and reliable network connectivity for a wide range of applications.