/

/

Component Documentation

How to Use Arduino Board Ethernet: Examples, Pinouts, and Specs

Image of Arduino Board Ethernet

Design with Arduino Board Ethernet in Cirkit Designer

Introduction

The Arduino Ethernet Board is a microcontroller board based on the ATmega328P, which is the same microcontroller used in the popular Arduino Uno. This board is specifically designed to provide an easy way to integrate Ethernet connectivity into your projects. It comes with a built-in Ethernet controller, allowing for networked applications. Common use cases include creating web servers, network sensors, and devices that can be controlled remotely over a network.

Explore Projects Built with Arduino Board Ethernet

STM32F4 and ENC28J60 Ethernet-Enabled Microcontroller Project

Image of youssef: A project utilizing Arduino Board Ethernet in a practical application

This circuit integrates an STM32F4 BlackPill microcontroller with an ENC28J60 Ethernet Board to enable Ethernet connectivity. The microcontroller communicates with the Ethernet board via SPI, with connections for power, ground, and SPI signals (SI, SO, SCK, and CS). The provided code is a basic template for further development.

Open Project in Cirkit Designer

ESP32 and W5500 Ethernet Module Controlled 8-Channel Relay

Image of ESP32 38Pin 8 Channel Relay USB-C: A project utilizing Arduino Board Ethernet in a practical application

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.

Open Project in Cirkit Designer

Arduino-Based Multi-Connectivity Interface with Display and Indicators

Image of AP_AGV : AP_TCP(Server) / Bluetooth(Slave) / ModbusRTU(Slave): A project utilizing Arduino Board Ethernet in a practical application

This circuit features an Arduino UNO R4 WiFi and an Arduino Ethernet board interconnected for combined functionality, possibly for IoT applications. It includes an OLED display and an RS485 to TTL converter for communication, as well as an HC-05 Bluetooth module for wireless data exchange. The circuit also controls several LEDs through resistors, which could be used for status indication, and a DIP switch for input configuration.

Open Project in Cirkit Designer

Arduino Nano Weather Station with Ethernet Connectivity

Image of Nano_Sht31_W5500: A project utilizing Arduino Board Ethernet in a practical application

This circuit features an Arduino Nano microcontroller interfaced with an Ethernet W5500 module for network connectivity and an SHT31 sensor for temperature and humidity measurements. The Arduino Nano communicates with the Ethernet module via SPI and reads data from the SHT31 sensor using I2C, enabling remote monitoring of environmental conditions.

Open Project in Cirkit Designer

Explore Projects Built with Arduino Board Ethernet

Image of youssef: A project utilizing Arduino Board Ethernet in a practical application

STM32F4 and ENC28J60 Ethernet-Enabled Microcontroller Project

This circuit integrates an STM32F4 BlackPill microcontroller with an ENC28J60 Ethernet Board to enable Ethernet connectivity. The microcontroller communicates with the Ethernet board via SPI, with connections for power, ground, and SPI signals (SI, SO, SCK, and CS). The provided code is a basic template for further development.

Open Project in Cirkit Designer

Image of ESP32 38Pin 8 Channel Relay USB-C: A project utilizing Arduino Board Ethernet in a practical application

ESP32 and W5500 Ethernet Module Controlled 8-Channel Relay

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.

Open Project in Cirkit Designer

Image of AP_AGV : AP_TCP(Server) / Bluetooth(Slave) / ModbusRTU(Slave): A project utilizing Arduino Board Ethernet in a practical application

Arduino-Based Multi-Connectivity Interface with Display and Indicators

This circuit features an Arduino UNO R4 WiFi and an Arduino Ethernet board interconnected for combined functionality, possibly for IoT applications. It includes an OLED display and an RS485 to TTL converter for communication, as well as an HC-05 Bluetooth module for wireless data exchange. The circuit also controls several LEDs through resistors, which could be used for status indication, and a DIP switch for input configuration.

Open Project in Cirkit Designer

Image of Nano_Sht31_W5500: A project utilizing Arduino Board Ethernet in a practical application

Arduino Nano Weather Station with Ethernet Connectivity

This circuit features an Arduino Nano microcontroller interfaced with an Ethernet W5500 module for network connectivity and an SHT31 sensor for temperature and humidity measurements. The Arduino Nano communicates with the Ethernet module via SPI and reads data from the SHT31 sensor using I2C, enabling remote monitoring of environmental conditions.

Open Project in Cirkit Designer

Technical Specifications

Key Technical Details

Microcontroller: ATmega328P
Operating Voltage: 5V
Input Voltage (recommended): 7-12V
Input Voltage (limit): 6-20V
Digital I/O Pins: 14 (of which 4 provide PWM output)
Analog Input Pins: 6
DC Current per I/O Pin: 40 mA
DC Current for 3.3V Pin: 50 mA
Flash Memory: 32 KB (ATmega328P) of which 0.5 KB used by bootloader
SRAM: 2 KB (ATmega328P)
EEPROM: 1 KB (ATmega328P)
Clock Speed: 16 MHz
Ethernet Controller: WizNet W5100 TCP/IP Embedded Ethernet Controller
Power-over-Ethernet (PoE) Module: Compatible (module sold separately)

Pin Configuration and Descriptions

Pin Number	Function	Description
1	TX (D1)	Digital pin for UART transmit
2	RX (D0)	Digital pin for UART receive
3-5	D2-D4	General purpose digital I/O pins
6	D5 (PWM)	Digital pin with PWM output capability
7-12	D6-D11	General purpose digital I/O pins
13	D12 (PWM)	Digital pin with PWM output capability
14	D13 (LED)	Built-in LED, also used for SPI SCK
A0-A5	Analog In	Analog input pins
AREF	Analog Ref	Reference voltage for the analog inputs
GND	Ground	Ground pins
RST	Reset	Used to reset the microcontroller
3V3	3.3V Supply	3.3V output from the onboard voltage regulator
5V	5V Supply	5V output from the onboard voltage regulator
VIN	Voltage In	Input voltage to the Arduino board when using an external power source

Usage Instructions

Integrating the Arduino Ethernet Board into a Circuit

Powering the Board:
- You can power the Arduino Ethernet Board via the USB connection or with an external power supply. The power source is selected automatically.
- The recommended voltage for the external power supply is 7-12V.
Connecting to a Network:
- Use a standard Ethernet cable to connect the RJ45 port to your network switch or router.
- Ensure that the network settings in your code match your network configuration.
Programming the Board:
- The board can be programmed with the Arduino Software (IDE). Select "Arduino Ethernet" from the Tools > Board menu.
- Use the included USB cable to connect the board to your computer for programming.

Important Considerations and Best Practices

Static Protection: The Ethernet port can be sensitive to static discharge. Handle the board with care, especially in dry environments.
Isolation: When using PoE, ensure that the board is isolated from conductive surfaces to prevent shorts.
Heat Dissipation: If the board is enclosed, make sure there is adequate ventilation to dissipate heat.

Example Code for Arduino UNO

Here is a simple example of how to use the Arduino Ethernet Board to create a web server that turns on and off an LED connected to pin 4:

#include <SPI.h>
#include <Ethernet.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 server library
EthernetServer server(80);

void setup() {
  pinMode(4, OUTPUT);      // Set the LED pin as an output
  Ethernet.begin(mac, ip); // Start the Ethernet connection and the server
  server.begin();
}

void loop() {
  EthernetClient client = server.available(); // Listen for incoming clients

  if (client) { // If a new client connects,
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) { // If there's bytes to read from the client,
        char c = client.read(); // Read a byte
        // If the byte is a newline character and the line is blank,
        // the HTTP request has ended, so you can send a reply
        if (c == '\n' && currentLineIsBlank) {
          // Send a standard HTTP response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connection: close");
          client.println();
          // Web page content
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");
          // Add a link that toggles the LED on pin 4
          client.println("<a href=\"/H\">Turn On LED</a><br>");
          client.println("<a href=\"/L\">Turn Off LED</a>");
          client.println("</html>");
          break;
        }
        if (c == '\n') {
          // If you got a newline, then the line is over
          currentLineIsBlank = true;
        } else if (c != '\r') {
          // If you got anything else, the line is not blank
          currentLineIsBlank = false;
        }
      }
    }
    // Give the web browser time to receive the data
    delay(1);
    // Close the connection
    client.stop();
  }
}

Troubleshooting and FAQs

Common Issues

Board Not Connecting to Network:
- Ensure that the Ethernet cable is properly connected and that the router or switch is functioning.
- Check that the MAC and IP addresses in your code match your network's requirements.
Cannot Upload Sketches:
- Verify that the correct board is selected in the Arduino IDE.
- Ensure that the correct driver is installed for the board.
LED Not Responding to Web Commands:
- Check the wiring of the LED and ensure it is connected to the correct pin.
- Verify that the server code is correctly parsing the HTTP request.

Solutions and Tips for Troubleshooting

Reset the Board:
- Press the reset button on the board to restart the microcontroller.
Check Network Configuration:
- Use a network scanner to ensure that the board is on the network and that the IP address is correct.
Review Code:
- Double-check the code for any syntax or logical errors.
Consult the Community:
- The Arduino community is a great resource for troubleshooting. Consider posting on forums or searching for similar issues.

For further assistance, refer to the official Arduino Ethernet Board documentation and community forums.