Arduino WiFi Shield (integrated antenna)

SKU: A000058

Retired Product

This product has been replaced by: Arduino Wifi shield
This product is no longer available. This page is only for reference.

The Arduino WiFi Shield connects your Arduino to the internet wirelessly. Connect it to your wireless network by following a few simple instructions to start controlling your world through the internet. As always with Arduino, every element of the platform – hardware, software and documentation – is freely available and open-source. This means you can learn exactly how it's made and use its design as the starting point for your own circuits.

Requires an Arduino board (not included)
Operating voltage 5V (supplied from the Arduino Board)
Arduino Due compatible
Connection via: 802.11b/g networks
Encryption types: WEP and WPA2 Personal
Connection with Arduino on SPI port
on-board micro SD slot
ICSP headers
FTDI connection for serial debugging of WiFi shield
Mini-USB for updating WiFi shield firmware

Arduino Wifi Shield Specifications

Descripion

The Arduino WiFi Shield allows an Arduino board to connect to the internet using the 802.11 wireless specification (WiFi). It is based on the HDG204 Wireless LAN 802.11b/g System in-Package. An AT32UC3 provides a network (IP) stack capable of both TCP and UDP. Use the WiFI library to write sketches which connect to the internet using the shield. The WiFIshield connects to an Arduino board using long wire-wrap headers which extend through the shield. This keeps the pin layout intact and allows another shield to be stacked on top.

The WiFi Shield can connect to wireless networks which operate according to the 802.11b and 802.11g specifications.

There is an onboard micro-SD card slot, which can be used to store files for serving over the network. It is compatible with the Arduino Uno and Mega. The onboard microSD card reader is accessible through the SD Library. When working with this library, SS is on Pin 4.

Arduino communicates with both the Wifi shield's processor and SD card using the SPI bus (through the ICSP header). This is on digital pins 11, 12, and 13 on the Uno and pins 50, 51, and 52 on the Mega. On both boards, pin 10 is used to select the HDG204 and pin 4 for the SD card. These pins cannot be used for general I/O. On the Mega, the hardware SS pin, 53, is not used to select either the HDG204 or the SD card, but it must be kept as an output or the SPI interface won't work.

Digital pin 7 is used as a handshake pin between the WiFi shield and the Arduino, and should not be used.

Arduino Wifi Shield Diagram

Note that because the HDG204 and SD card share the SPI bus, only one can be active at a time. If you are using both peripherals in your program, this should be taken care of by the corresponding libraries. If you're not using one of the peripherals in your program, however, you'll need to explicitly deselect it. To do this with the SD card, set pin 4 as an output and write a high to it. For the HDG204, set digital pin 10 as a high output.

The shield can connect to encrypted networks that use either WPA2 Personal or WEP encryption. It can also connect to open networks.

A network must broadcast its SSID for the shield to be able to connect.

On Board Indicators

The shield contains a number of informational LEDs:

L9 (yellow) : this is tied to digital pin 9
LINK (green) : indicates a connection to a network
ERROR (red) : indicates when there is a communication error
DATA (blue) : indicates data being transmitted/received

On Board Interfaces

The reset button on the shield resets both the HDG204 and the Arduino board.

Arduino Wifi Shield Interface

There is an onboard Mini-USB connector. This is not for programming an attached Arduino, it is for updating theAT32UC3 using the Atmel DFU protocol. The programming jumper adjacent to the power bus and analog inputs should be left unconnected for typical use. It is only used for DFU programming mode.

A FTDI connection enables serial communication with the 32U for debugging purposes.

This product is listed in:

Retired

Product Comments

Start the conversation

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$6+ for Standard Post (typically 6+ business days, tracked)
$10+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$11+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!

Write Your Own Review