Difference between revisions of "Hotspot mode"
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Please treat the instructions below as advisory only - Box Of Stops are regrettably unable to support troubleshooting a misconfigured network setup. | Please treat the instructions below as advisory only - Box Of Stops are regrettably unable to support troubleshooting a misconfigured network setup. | ||
| − | For reference, one possibility we are looking at is selling a Micro SD card, with the necessary Raspbian, Box Of Stops and Wi-Fi Hotspot all pre-installed. Please [http://www.boxofstops.com/contact let us know] if this would be of interest. | + | For reference, one possibility we are looking at is selling a Micro SD card, with the necessary Raspbian, Box Of Stops and Wi-Fi Hotspot all pre-installed. Please [http://www.boxofstops.com/contact/ let us know] if this would be of interest. |
== Sequence == | == Sequence == | ||
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== Instructions == | == Instructions == | ||
| − | The instructions for setting up a Wi-Fi Hotspot have been written by those who know a lot more about this at http://elinux.org/RPI-Wireless-Hotspot. | + | The instructions for setting up a Wi-Fi Hotspot have been written by those who know a lot more about this at <googa>http://elinux.org/RPI-Wireless-Hotspot|http://elinux.org/RPI-Wireless-Hotspot</googa>. |
There are a couple of points to make before you work through the instructions though: | There are a couple of points to make before you work through the instructions though: | ||
| Line 21: | Line 21: | ||
* A large part of the instructions are about setting up "IP forwarding" and "NAT". These steps are unhelpful for a standalone Box Of Stops install - if you don't want to enable access to the internet through your hotspot. [[#Skipping IP Forwarding|Skipping IP Forwarding]] below describes how to vary the instructions on elinux.org to omit this. | * A large part of the instructions are about setting up "IP forwarding" and "NAT". These steps are unhelpful for a standalone Box Of Stops install - if you don't want to enable access to the internet through your hotspot. [[#Skipping IP Forwarding|Skipping IP Forwarding]] below describes how to vary the instructions on elinux.org to omit this. | ||
| − | When troubleshooting this topic, it may be helpful to know that the other phrase for a hotspot is | + | When troubleshooting this topic, it may be helpful to know that the other phrase for a hotspot is a Wireless Access Point. |
== Connecting == | == Connecting == | ||
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== Skipping IP Forwarding == | == Skipping IP Forwarding == | ||
| − | If you are running Box Of Stops truly standalone, with no other router to connect to the internet, then it may be best to skip a couple of the instructions at http://elinux.org/RPI-Wireless-Hotspot. This avoids the connecting device (e.g. a touchscreen tablet) expecting to see an onward connection to the internet, and marking the Wi-Fi connection as incomplete. | + | If you are running Box Of Stops truly standalone, with no other router to connect to the internet, then it may be best to skip a couple of the instructions at <googa>http://elinux.org/RPI-Wireless-Hotspot|http://elinux.org/RPI-Wireless-Hotspot</googa>. This avoids the connecting device (e.g. a touchscreen tablet) expecting to see an onward connection to the internet, and marking the Wi-Fi connection as incomplete. |
The changes to the instructions are: | The changes to the instructions are: | ||
* When editing '''/etc/udhcpd.conf''' in Step 2, comment out the '''opt dns''' and '''opt router''' lines | * When editing '''/etc/udhcpd.conf''' in Step 2, comment out the '''opt dns''' and '''opt router''' lines | ||
* Omit all of Step 4, about setting up NAT and IP forwarding | * Omit all of Step 4, about setting up NAT and IP forwarding | ||
Latest revision as of 21:20, 27 September 2017
At the moment this must be considered an advanced topic, but for the adventurous it may be useful to know it is possible to configure the Raspberry Pi to provide it's own Wi-Fi Hotspot.
This is useful to do when there is no Wi-Fi router available (e.g. a rural church), but you still need to link up a tablet or other touchscreen device to Box Of Stops.
Please treat the instructions below as advisory only - Box Of Stops are regrettably unable to support troubleshooting a misconfigured network setup.
For reference, one possibility we are looking at is selling a Micro SD card, with the necessary Raspbian, Box Of Stops and Wi-Fi Hotspot all pre-installed. Please let us know if this would be of interest.
Sequence
We recommend you get Box Of Stops up and running before converting your Raspberry Pi to hotspot mode. At least the download will be easier with a working internet connection.
If you do need to re-enable internet access, one trick you can use is to plug the Pi directly into a router - using an Ethernet cable. The instructions below have only re-configured the Wi-Fi connection, so this works as a back up plan.
Instructions
The instructions for setting up a Wi-Fi Hotspot have been written by those who know a lot more about this at http://elinux.org/RPI-Wireless-Hotspot.
There are a couple of points to make before you work through the instructions though:
- If you hit a 404 Not Found error running the sudo apt-get install hostapd udhcpd command in Step 1, please try sudo apt-get update first, to refresh the package list.
- A large part of the instructions are about setting up "IP forwarding" and "NAT". These steps are unhelpful for a standalone Box Of Stops install - if you don't want to enable access to the internet through your hotspot. Skipping IP Forwarding below describes how to vary the instructions on elinux.org to omit this.
When troubleshooting this topic, it may be helpful to know that the other phrase for a hotspot is a Wireless Access Point.
Connecting
Once the hotspot is enabled on the Raspberry Pi, the remaining steps to connect to Box Of Stops are:
- Associate the tablet/other device with the new Wi-Fi network you have created, using the ssid and wpa_passphrase from the instructions.
- As before, open a browser, and connect to the advertised address (exactly as when you first connected). If in doubt, the IP address you need to connect to is the same as you put into the iface wlan0 inet static section in /etc/network/interfaces in the instructions.
Skipping IP Forwarding
If you are running Box Of Stops truly standalone, with no other router to connect to the internet, then it may be best to skip a couple of the instructions at http://elinux.org/RPI-Wireless-Hotspot. This avoids the connecting device (e.g. a touchscreen tablet) expecting to see an onward connection to the internet, and marking the Wi-Fi connection as incomplete.
The changes to the instructions are:
- When editing /etc/udhcpd.conf in Step 2, comment out the opt dns and opt router lines
- Omit all of Step 4, about setting up NAT and IP forwarding
