Embedded project used for data collection in the field with a WiFi dongle configured as access point and a WiFi capable E-reader as human interface. When back home the data must be offloaded immediately to the main server.
this works great, for when I get home I plug the Ethernet cable into the Pi and have instant connection to my network.
I want to use this system with a Model A when they become available, as it seems that its power consumption is only 1/3 of that of the model B so battery time will be three times as long. As it has no Ethernet interface and a WiFi dongle setup as access point can't act as a normal WiFi client at the same time I need two WiFi dongles; one as client and the other as access point.
But I can't get it to work (on the model B); The Pi won't even start up when two dongles are inserted in the hub; it hangs either on starting ntpd or sshd. I have two Ralink RT5370 (work as both access point and client: http://www.ebay.com/itm/150-MBPS-Ralink ... 2a1d4f60e7
) and one Edimax EW-7811UN (works only as client: http://www.ebay.com/itm/Edimax-Network- ... 4ab5872834
My initial idea was to use the two Ralink dongles and configure wlan0 as client and wlan1 as access point. As they're both the same it would not matter which one is found as wlan0 or wlan1 at startup. But the Pi won't even complete the startup sequence when both are plugged in until I pull one of the dongles out of the hub (haning on starting sshd).
I hope someone can help with this, as I think the setup described above will be fairly common once the model A starts shipping. I'm just learning Linux, so if you have some hints please give clear instructions. Thanks.