The programming jumper adjacent to the power bus and analog inputs should be left unconnected for typical use. This is not for programming an attached Arduino, it is for updating the AT32UC3 using the Atmel DFU protocol.
The reset button on the shield resets both the HDG204 and the Arduino board. The previous version of this shield uses a HDG104 instead of the actual HDG204. A network must broadcast its SSID for the shield to be able to connect. The shield can connect to encrypted networks that use either WPA2 Personal or WEP encryption. For the HDG204, set digital pin 10 as a high output. To do this with the SD card, set pin 4 as an output and write a high to it. If you're not using one of the peripherals in your program, however, you'll need to explicitly deselect it. If you are using both peripherals in your program, this should be taken care of by the corresponding libraries. Note that because the HDG204 and SD card share the SPI bus, only one can be active at a time. 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.ĭigital pin 7 is used as a handshake pin between the WiFi shield and the Arduino, and should not be used. These pins cannot be used for general I/O. On both boards, pin 10 is used to select the HDG204 and pin 4 for the SD card. This is on digital pins 11, 12, and 13 on the Uno and pins 50, 51, and 52 on the Mega. When working with this library, SS is on Pin 4.Īrduino communicates with both the Wifi shield's processor and SD card using the SPI bus (through the ICSP header). The onboard microSD card reader is accessible through the SD Library. It is compatible with the Arduino Uno and Mega. There is an onboard micro-SD card slot, which can be used to store files for serving over the network. The WiFi Shield can connect to wireless networks which operate according to the 802.11b and 802.11g specifications. This keeps the pin layout intact and allows another shield to be stacked on top. The WiFI shield connects to an Arduino board using long wire-wrap headers which extend through the shield. Use the WiFI library to write sketches which connect to the internet using the shield. An AT32UC3 provides a network (IP) stack capable of both TCP and UDP. It is based on the HDG204 Wireless LAN 802.11b/g System in-Package. The Arduino WiFi Shield allows an Arduino board to connect to the internet using the 802.11 wireless specification (WiFi). On the Product itself through our Customer SupportĪrduino WiFi Shield is open-source hardware! You can build your own board using the following files:.You can find in the Getting Started section all the information you need to configure your board, use the Arduino So ftware (IDE), and start tinker with coding and electronics. Mini-USB for updating WiFi shield firmware.FTDI connection for serial debugging of WiFi shield.Encryption types: WEP and WPA2 Personal.Operating voltage 5V (supplied from the Arduino Board).Requires an Arduino board (not included).This means you can learn exactly how it's made and use its design as the starting point for your own circuits. As always with Arduino, every element of the platform – hardware, software and documentation – is freely available and open-source. Connect it to your wireless network by following a few simple instructions to start controlling your world through the internet. The Arduino WiFi Shield connects your Arduino to the internet wirelessly.
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