Arduino WiFI Shield User Manual

Arduino WiFI Shield
The Arduino WiFi shield allows an Arduino board to connect to the internet using the WiFi library
and to read and write an SD card using the SD library.
The WiFi Library is included with the most recent version of the Arduino IDE. The firmware for the
WiFi shield has changed in Arduino IDE 1.0.4. It is strongly recommended to install this update per
these instructions
The WiFI library is similar to the Ethernet library and many of the function calls are the same.
Connecting the Shield
Using the Shield With Older Boards
Ports on the WiFi Shield
Network Settings
Scan for available networks
Open network example
WPA network example
WEP Network example
SD Card and SPI
Updating firmware on the shield
Next steps
Connecting the Shield
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Arduino WiFI Shield Specifications

General

Operating Voltage	5V
WiFi Chipset	HDG104
WiFi Standard	802.11 b/g
Input Voltage	5V
WiFi Module	HDG104
Encryption	WEP, WPA
Connection with Arduino	SPI
Microcontroller	N/A (Shield)
Digital I/O Pins	N/A (Shield)
PWM Channels	N/A (Shield)
Analog Input Channels	N/A (Shield)
DC Current per I/O Pin	N/A (Shield)
Flash Memory	N/A (Shield)
SRAM	N/A (Shield)
EEPROM	N/A (Shield)
Clock Speed	N/A (Shield)
Security	WEP, WPA