Hi Rowan,
Thanks for your information...
> You definitely should not use so many wireless mice in the same room.
Yeah I figured there would be a bit much rf floating around in one room for things to work reliably. Maybe the best approach is to have touch-screens using an on-board keyboard, and then you don't need to have any keyboards and mice.
>>For each row have a wireless ethernet router
> pretty sure a hub/switch is cheaper, you can get 10/100 for under $20
I value getting rid of ethernet cables to each unit as a high priority. In fact I'd like to only feed +12V to each students desk. This would run the monitor. Then have a little box with a couple of 3 terminal regulator chips to feed in the +12V and produce +5V for the RPi and +3.3V for the breadboard logic.
As NZ switches to fibre-optics broadband, then there should be a lot of ADSL modem/router/wifi boxes being chucked out. These may allow turning off the ADSL WAN, and using the wifi and having a wired ethernet port as the up-link to the teachers server / the internet. However I'm not sure if these would support 1Gb/s up-link, probably more likely to be 10/100Mb/s.
Also, at a glance, there are options like the Huawei WS323 WiFi Access Point/Client/Repeater Wireless networking: 802.11b/g/n, 2.5GHz or 5G dual-band, with a 1 Gigabit Ethernet port at under $100 each. Maybe that would be a suitable alternative.
If each wifi router is only allowing the connection (through MAC address filtering) of the 7 RPi's in it's row, and each is on a different wifi channel, then I figure that the rf floating around in the room shouldn't cause too many confliction problems.
I dunno if a schools expectation would be that every student can simultaneously stream 1080p video, but if so, then it may be stretching the my networks capabilities
cheers,
Ian.
Thanks for your information...
> You definitely should not use so many wireless mice in the same room.
Yeah I figured there would be a bit much rf floating around in one room for things to work reliably. Maybe the best approach is to have touch-screens using an on-board keyboard, and then you don't need to have any keyboards and mice.
>>For each row have a wireless ethernet router
> pretty sure a hub/switch is cheaper, you can get 10/100 for under $20
I value getting rid of ethernet cables to each unit as a high priority. In fact I'd like to only feed +12V to each students desk. This would run the monitor. Then have a little box with a couple of 3 terminal regulator chips to feed in the +12V and produce +5V for the RPi and +3.3V for the breadboard logic.
As NZ switches to fibre-optics broadband, then there should be a lot of ADSL modem/router/wifi boxes being chucked out. These may allow turning off the ADSL WAN, and using the wifi and having a wired ethernet port as the up-link to the teachers server / the internet. However I'm not sure if these would support 1Gb/s up-link, probably more likely to be 10/100Mb/s.
Also, at a glance, there are options like the Huawei WS323 WiFi Access Point/Client/Repeater Wireless networking: 802.11b/g/n, 2.5GHz or 5G dual-band, with a 1 Gigabit Ethernet port at under $100 each. Maybe that would be a suitable alternative.
If each wifi router is only allowing the connection (through MAC address filtering) of the 7 RPi's in it's row, and each is on a different wifi channel, then I figure that the rf floating around in the room shouldn't cause too many confliction problems.
I dunno if a schools expectation would be that every student can simultaneously stream 1080p video, but if so, then it may be stretching the my networks capabilities
cheers,
Ian.