Hi good day. I'm an ICT educator and I tested the Moodlebox with 3 of my classes in order to test the connection capacity. I'm using a Raspberry Pi 4, 4gb RAM, 32 gb SD card, 5.1V/3.5A output power supply, latest version of MoodleBox. I tested with students connecting to the wireless network using first Mobile phones and then with Laptops.
On all occasions I was able to have only about 10 clients connected maximum to the MoodleBox wireless network. I know in the documentation they indicated that at least 25 clients should be able to connect simultaneously.
Is there anything that I can do or buy, to allow more concurrent wireless client connections to the MoodleBox installation?
Any help in this matter, will be greatly appreciated.
Thanks
Keith

    In a spontaneous trial today we managed to connect exactly 13 devices to the MoodleBox WLAN. The device was a RPi 3B+, official 2.5 A power supply and MoodleBox 3.5.0. At about 11 devices, as reported in the MoodleBox dashboard, the devices were getting rejected. Students kept on trying and finally 13 devices were connected, not more. Either this is an inherent limit of the hardware or the device driver of the wireless interface.

    I hope, we can achieve the limit 25 as reported in the discussion https://discuss.moodlebox.net/d/36-low-number-of-concurrent-connected-users. (Refer the sources linked to that discussion.)

    14 days later

    Hi Ratna, thanks so much for your response. I saw from the various threads that many other persons seem to have the low amount of concurrent connections issue. I saw no suggestion in any of the threads that could solve the issue. My power supply is the high quality one shipped with the CanaKit Raspberry Pi 4 kit, so I know it's not a power issue.
    Anyone has any suggestions which can allow more connections to occur e.g. use of a WiFi router etc?
    Any help will be appreciated as we are looking for a good offline solution to use with our students here since Internet access is an issue.
    Thanks in advance,
    Keith

      2 months later

      Thanks so much for the help Ratna!
      I am about the try the solution you linked where we can connect a Router to the Pi using an ethernet cable. The router should allow more connections than the MoodleBox Pi Wifi and the ethernet can bypass the WiFi hardware limitations and allow more simultaneous connections to the MoodleBox web server.

        5 days later

        I had the same problem. My solution is a USB WiFi adapter. For this I switched off the internal WLAN.
        It works with EDIMAX EW-7811UN Wireless USB Adapter and TB® Ralink 5370 USB Wifi Dongle. When I#m working with the Ralink Dongle, I had to adapt the hostapd.conf file.
        I works at least with 17 clients, Before that there were only 10 clients.
        In the next few weeks I will try a larger class with more students.

        Here is my configuration in german.
        Konfigurationsänderung Moodlebox mit USB Stick
        Zugang per ssh (z.B. putty). Raspberry mit Internetanschluss über lan.
        Update
        sudo apt-get update
        sudo apt-get upgrade -y
        sudo apt-get dist-upgrade
        sudo nano /boot/config.txt
        Folgendes am Ende ohne Anführungsstriche einfügen.
        '# turn wifi and bluetooth off'
        'dtoverlay=pi3-disable-wifi'
        'dtoverlay=pi3-disable-bt'
        Neustarten
        sudo shutdown -r 0

        Edimax
        Läuft ohne weitere Veränderungen

        Ralink
        sudo apt-get install firmware-ralink

        Änderung von hostapd.conf
        sudo nano /etc/hostapd/hostapd.conf
        Dann folgenden Eintrag ändern:
        '# Enable 802.11n'
        '# ieee80211n=1'

        a year later
        Nicolas locked the discussion .
        2 years later