BOARDS

Home

Promoções

Produtos visualizados

Arduino Leonardo ETH

Novo produto

Arduino Leonardo ETH

The Leonardo ETH is a microcontroller board based on the ATmega32U4 (datasheet) and the new W5500 TCP/IP Embedded Ethernet Controller (datasheet).

Mais detalhes

Últimos itens disponíveis!

44,40 € com IVA

Adicionar à Lista de desejos

Mais informação

Arduino Leonardo ETH

The Leonardo ETH is a microcontroller board based on the ATmega32U4 (datasheet) and the new W5500 TCP/IP Embedded Ethernet Controller (datasheet). It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a RJ45 connection, a micro USB connector, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
The Leonardo ETH differs from the preceding Ethernet board in that the ATmega32u4 has built-in USB communication, eliminating the need for an external USB-to-serial converter. This allows the Leonardo ETH to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behaviour of the board. Plus, it has the new W5500 TCP/IP Embedded Ethernet Controller onboard.
An optional Power over Ethernet module can be added to the board as well.
The Leonardo ETH has the same Wiznet Ethernet interface as the Ethernet Shield 2.
An onboard microSD card reader, which can be used to store files for serving over the network, is accessible through the SD Library. Pin 10 is reserved for the Wiznet interface, SS for the SD card is on Pin 4.
The board uses the standardized 1.0 pinout, consisting of:

added SDA and SCL pins: beside the AREF pin, two TWI pins have been added. This will allow to connect the Leonardo ETH to Shields that use the I2C or TWI bus communication for their functioning.

the IOREF: it allows the shields to adapt to the IO voltage level provided by the Board. The Shield that uses the IOREF pin will be compatible with both 3V3 and 5V (e.g Due and Uno) IO levels Arduino Boards. Next to the IOREF pin you can find another (currently not in use) pin, that is reserved for future usage. 

Summary

Microcontroller

ATmega32u4

Operating Voltage

5V

Input Voltage Plug (recommended)

7-12V

Input Voltage Plug (limits)

6-20V

Input Voltage PoE (limits)

36-57V

Digital I/O Pins

20

PWM Channels         

7

Arduino Pins reserved:

4 used for SD card select

 

10 used for W5500 select

Analog Input Pins

12

DC Current per I/O Pin

40 mA

DC Current for 3.3V Pin

1 A (only when powered via the external power supply)

Flash Memory

32 KB (ATmega32u4) of which 4 KB used by bootloader

SRAM

2.5 KB (ATmega32u4)

EEPROM

1 KB (ATmega32u4)

Clock Speed

16 MHz

W5500 TCP/IP Embedded Ethernet Controller

 

Power Over Ethernet ready Magnetic Jack

 

Micro SD card, with active voltage translators

 

Schematic & Reference Design

EAGLE files: Arduino-Leonardo-ETH-XX-reference-design.zip

Schematic: Arduino-Leonardo-ETH-XX-schematic.pdf

Power

The board can be powered also via an external power supply, via an optional Power over Ethernet (PoE) module, or using the micro USB connection. 

External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. When using the power adapter, it can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector.
The board can operate on an external supply of 6 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may be unstable. If using more than 12V, the voltage regulator may overheat and damage the board. The recommended range is from 7 to 12 volts.
The power pins are as follows:

  • VIN. The input voltage to the Arduino board when it's using an external power source (as opposed to 5 volts from the USB connection or other regulated power source). You can supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin.
  • 5V. This pin outputs a regulated 5V from the regulator on the board. The board can be supplied with power either from the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. We don't advise it.
  • 3V3. A 3.3 volt supply generated by the on-board regulator. Maximum current draw is 50 mA.
  • GND. Ground pins.
  • IOREF. This pin on the Arduino board provides the voltage reference with which the microcontroller operates. A properly configured shield can read the IOREF pin voltage and select the appropriate power source or enable voltage translators on the outputs for working with the 5V or 3.3V.

The optional PoE module is designed to extract power from a conventional twisted pair Category 5 Ethernet cable.

PoE module features are as follows: 

IEEE802.3af compliant

Input voltage range 36V to 57V

Overload and short-circuit protection

12V Output

High efficiency DC/DC converter: typ 85% @ 80% load

1500V isolation (input to output)

Memory

The ATmega32u4 has 32 KB (with 4 KB used for the bootloader). It also has 2.5 KB of SRAM and 1 KB of EEPROM (which can be read and written with the EEPROM library).

Avaliações

Sem avaliações neste momento.

Escrever uma avaliação

Arduino Leonardo ETH

Arduino Leonardo ETH

Arduino Leonardo ETH

The Leonardo ETH is a microcontroller board based on the ATmega32U4 (datasheet) and the new W5500 TCP/IP Embedded Ethernet Controller (datasheet).