thomsoni wrote: ↑Wed Jan 23, 2019 3:21 pmHi,
I'm a complete novice to this but have 30 Pi's that we want to use as a python programming lab separate from our main network. We have a wireless router and a temporary laptop with Debian x86 installed (that if successful will be replaced by a more appropriate machine) to act as a server.
Can anyone point me in the direction of a guide on how to connect everything up?
My idea is to initially store all files centrally to avoid the need for highly portable memory cards and then see where we can go from there.
Advice/ideas all welcome.
Note that the steps about enabling network boot on the client Pi's is only needed on older Pi 3 (without the +), and can be skipped if they are model 3B+
That's not going to work for booting.
Unfortunately both solutions (PiServer and PiNet) require a half decent wired network. In the case of PiNet, all the details on the hardware required (including a hardware specifics video) can be found over on the hardware page - http://pinet.org.uk/articles/installation/hardware.html
I don't think you save (if you can find them), they are the same price at Farnell, only the 3B is a few pound cheaper.
Then someone disconnects the cable from the T on one machine and the whole network dies.
donod2 wrote: ↑Mon Mar 18, 2019 10:31 am
I started off with the RPI when I thought I was going to use it with my amateur radio. 2 weeks later I was knee deep into a project for a school my wife and I are working with in Haiti.
At the current time. I have 14 desktops up and running on wifi. There is also 1 French content server and 1 file server that wired to the router and seems to help quite a bit. I have 2 additional RPI that are not connected due to desk space. Each desktop has 2 login options, 1 for students and 1 for teachers that the admin logs in and out each class.
I choose to go with a Linksys router and use Wifi. I thought about PInet but I need another computer onsite but would have to have backups that can be swapped quickly and a switch with eth cables, which all adds to the power problem.
The desktops run off of microSD cards and the servers use a 120gb SSD. I have a stand alone USB writer that will do USB, SD, Micro, SSD fairly quick. I chose to go this route for ease and everything is run on solar panels and AGM batteries, so I crunch watts like pennies. I have 14 spare SD and 2 extra SSD close to the school just in case.
Most if not all do not all of the students do not have any experience, so the desktop is pretty basic with the Libre office , browsers and a few other programs. I have a few people that are windows computer savvy and tacking college courses in IT to teach the class 2 days a week and on Saturday during a kids club for this school year.
Before the next school year, we will install 6 more RPI and power up the other 2 on site. Our goal is to have about 24 RPI in the class with 2 for teachers to use with the students. Once everyone is acclimated, then we can look at individual logins. We plan to gradually add more content and build on the skills.
If I were doing this in the US, it would be a lot different, but I am dealing with a much harsher environment and harder to get to.
Thanks for posting your experiences. I would have thought wired networking would be more energy efficient than WiFi because there is no need to power all the WiFi radio transmitters. Did you actually measure how much electricity is consumed using either alternative?