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2.3. WiFly Shield

As Arduino Uno which plays

role of the motherboard is very

capable of talking and listening

(controlling I/O), it is not

equipped with key for this project

communication capability which

is wireless IEEE 802.11 protocol.

To achieve this requirement I was

forced to look for addition that

does. After few days of searching

I have come up with WiFly shield

form SparkFun Electronics that

allows to connect to the

802.11b/g wireless network.

The revision of WRL-09954

is an addition         -131C

wireless module, an SC16IS750 chip and supporting components. The usage of SPI-to-

UART bridge accelerates      The

only restriction, as the power is taken directly from Vin pin of the Arduino regulated to

3.3V, is the communication between WiFly shield and Arduino itself. The communication

goes over SPI using digital pins 10 to 13(CS, MOIS, MISO, SCLK respectively) what

makes them unusable for programming purposes. But, on the other hand, thanks to the

prototyping are   spaced holes placed on the shield, I was able to place few

improvements without placing another printing shield what decreased the final dimensions.

The technical support came as:

- 



- 



- Schematics available in Appendix B  

- experimental WiFly shield code library

 which in the end I have decided not to

use,

http://www.sparkfun.com/datasheets/Wireless/WiFi/WiFlyGSX-um2.pdf

http://www.sparkfun.com/datasheets/Components/SMD/SC16IS740_750_760.pdf

Figure 6. WiFly SparkFun Arduino shield

[source:http://www.sparkfun.com/products/9954]

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D-Link DSL-G684T Manual de usuario Pagina 16