WiShield 1.0

From AsyncLabs Documentation

The WiShield is an add-on board that brings Wi-Fi and true wireless connectivity to the Arduino platform. It is best suited for low data rate applications, such as simple control and sensor applications like temperature readings.

Contents 1 WiShield Features 1.1 Shield Features 1.2 Wi-Fi Module Features 1.3 Pin Usage 2 Schematic 3 Gerber File

WiShield Features

Shield Features

• Add-on shield built for Arduino Diecimila and Duemilanove
  • Dimensions, shape, even color match exactly!
  • True plug-n-play solution
• 9-pin breakout header (not populated) for use in breadboard applications
• Uses SPI for host communication (max speed 25MHz)
• All Arduino headers brought out for easy access
• Easy access reset button on-board
• On-board PCB antenna
• Switchable interrupt pin usage between INT0 (port D, pin 2) and digital pin 8 (port B, pin 0)
• Switchable LED on digital pin 9 (port B, pin 1)

Wi-Fi Module Features

• 802.11b Wi-Fi certified
  • 1Mbps and 2 Mbps throughput speeds
• Supports both infrastructure (BSS) and ad hoc (IBSS) wireless networks
• Ability to create secured and unsecured networks
  • WEP (64-bit and 128-bit)
  • WPA/WPA2 (TKIP and AES) PSK
• Low power usage
  • Standby mode: 10mA
  • Transmit: 230mA
  • Receive: 85mA
  • Sleep: 250μA

Pin Usage

1. SPI

• • Slave select (SS) : Arduino pin 10 (port B, pin 2)
  • Clock (SCK) : Arduino pin 13 (port B, pin 5)
  • Master in, slave out (MISO) : Arduino pin 12 (port B, pin 4)
  • Master out, slave in (MOSI) : Arduino pin 11 (port B, pin 3)

2. Interrupt (Uses only one of the following, depending on jumper setting)

• • INT0 : Arduino pin 2 (port D, pin 2)
  • DIG8 : Arduino pin 8 (port B, pin 0)

3. Interrupt selection jumper

• • Do NOT leave it unconnected, you need select one.

4. LED Indicator: Arduino pin 9 (port B, pin 1)

• • Once wishield is connected to AP or other devices, LED is on.

5. LED jumper

• • To regain use of digital pin 9, remove the LED jumper cap

6. Reset button

• • the same reset as arduino. Push it will reset BOTH wishield and arduino.

7. Bread board friendly connectors

• • ALL the pins needed to make the wifi module work are here

8. Ext Antenna mounting place

• • we will support ext antenna for later version.

Schematic

The schematic can be found here.

If you need software to view the schematic, you can download the Eagle software for free from CadSoft.

Gerber File

The board gerber file can be found here.