Ethernet Shield W5100 pour Arduino UNO ou MEGA :
Le nouveau Shield Ethernet Rev 3 pour Arduino à base de Wiznet W5100 (100 Mb/s), incluant un lecteur de carte micro-SD et un emplacement pour intégrer la fonctionnalité POE via un module additionnel.
Version officielle 33 € en France : snootlab.com
module d'alimentation : POE
Version copie chinoise : shield ethernet W5100 sur Ebay à partir de 7€
! Pas d'option POE possible (alimentation par le câble Ethernet)
Ces deux shields utilisent les librairies :
- SPI.h
- Ethernet.h
- SD.h
Une autre fonction de ces shields, la carte Micro-SD
Enregistrement de donnés, hébergement de pages web, images, fichiers...
http://arduino.cc/en/Main/ArduinoEthernetShield Extrait du site officiel Arduino :
Arduino communicates with both the W5100 and SD card using the SPI bus (through the ICSP header). This is on digital pins 11, 12, and 13 on the Duemilanove and pins 50, 51, and 52 on the Mega. On both boards, pin 10 is used to select the W5100 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 W5100 or the SD card, but it must be kept as an output or the SPI interface won't work.
Note that because the W5100 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 W5100, set digital pin 10 as a high output.