If you’re looking to build a network-connected device, RobotDyn MEGA 2560 ETH R3 with LAN and additional Wi-Fi connection, is the best solution to use ArduinoMega 2560 R3 and Ethernet controller W5500 and with Wi-Fi module ESP-01!
This is a fully-featured Ethernet-connected device via LAN or Wi-Fi. Depending on your use case, it can act as a server or a net member. In a server role, it will receive requests from other devices and services in the local network and internet, and respond or react accordingly. In a net member role, the RobotDyn MEGA 2560 ETH R3 can collect data from different devices or industrial equipment and send it through the local network or the Internet. It can also receive data from the local network and internet, and control connected devices and equipment. The RobotDyn MEGA 2560 ETH R3 can also act as a stand-alone unit, providing autonomous reactions based on the defined algorithm in response to network changes or other triggers.
MEGA 2560 ETH R3 features 5 devices on one board
Mega 2560 based on an ATmega2560 with 70 I/O.
Ethernet controller based on WizNet W5500 TCP/IP.
Optional PoE function (receiving power directly through the Ethernet cable). Can select passive PoE or active (intellect) PoE.
Micro SD card module.
Additional Wi-Fi module ESP-01, based on ESP8266 microcontroller.
Ports and buses
RobotDyn MEGA 2560 ETH R3 has 70 input/output ports, 12 of which can be used for PWM, and 16 analog ports with 10-bits resolution (0 – 1023). The board is equipped with an RJ45, micro USB, DC power jack, and a reset button.
WizNet W5500 is a TCP/IP embedded LAN Ethernet controller. It provides TCP/IP Stack, 10BaseT/100BaseTX Ethernet with full or half-duplex, osMAC and PHY. W5500 is using a highly efficient SPI protocol, with 80 MHz clocks for high-speed connectivity to Atmega2560. For lower energy consumption, W5500 provides WOL (Wake on LAN) and Power Off modes.
Onboard has a socket for connecting the Wi-Fi ESP-01 module. Wi-Fi module connecting to the Serial3 interface via RX3(D15)/TX3(D14) I/O.
In Arduinocode, for control, a Wi-Fi module needs to use Serial3 port.
Micro-SD card rider
The board also features the Micro SD card socket. The micro SD card can be used to save and store the data, which can later be transferred over the network. Digital port D4 (CS-CS2) of the ATmega2560 is dedicated to working with the micro SD. For card detect used D9, but you can cut off soldering pads for disconnect this function.
** Digital port D10 (SS-CS2) is used by WizNet W5500. The Ethernet controller and microSD card are connected through the SPI bus.
Programming in ArduinoIDE
RobotDyn MEGA 2560 ETH R3 can be programmed via an ArduinoIDE. Select ArduinoMega 2560 in the Boards menu, and use Ethernet3 / Ethernet4 library.
RobotDyn MEGA 2560 ETH R3 can be powered via
USB port (5V, 500mA)
DC-IN jack, PWC 2.1mm, (supporting 7-24V DC input voltage);
Through an Ethernet cable using PoE (Power over Ethernet) ― requires PoE-enabled switch or a PoE injector.
Note:PoE module is optional. There are several PoE options available, depending on the PoE equipment you use.
The Active PoE is compliant with 802.3af or 802.3at. It checks the power input, and if it doesn’t meet the device’s requirements, it won’t power up.
The Passive PoE is a simplified version that does not perform a handshake, so it is important to know what PoE voltage your device supplies requires before plugging in the Ethernet cable and powering it up. If you connect the wrong voltage you may cause permanent electrical damage to the device.
Make sure to select the correct board option with relevant PoE module.
MEGA 2560 ETH R3 with ATmega2560 & W5500
Input Voltage (VIN/DC jack):7~12V
Power IN (USB):5V-limit 500mA
PoE Type:No PoE/Active PoE/Passive PoE
Power IN (PoE):Optional module, 48V(Input), 9V(Output)
Reserved Pins:D4 is used for SD card select;
D10 is used for W5500 CS;
*Optional:D8 is used for W5500 interrupting, D7 is used for W5500 initialization, D9 is used for SD card detect
Card Reader:Micro SD card, with logiclevel convertor
PHY compliance:10BaseT/100BaseTX Ethernet. Full and half duplex
Memory:Internal 32Kbytes Memory for Tx/Rx Buffers
TCP/IP Protocols:TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
PHY Clock Speed:25MHz
Dimensional drawing:Click here to open
Pinout:Click here to open
Schematic:Click here to open
ArduinoLib Ethernet3:Click here to open
Tutorial:Click here to open
1 x Development Board
Robotdyn MEGA 2560 ETH R3 ATmega2560+W5500 Micro-SD Card Reader Micro-USB USB-UART CP2104 ESP-01 Socket Development Board
Out of stock
Type No PoE / Type Active PoE / Type Passive PoE /
Shipping:Standard Shipping about 10-25 business days