I have a raspberry pi (model 3 B+) acting as a wireless access point. I would like the pi to be able to connect to an available wifi network while remaining a wireless access point.
The use case for this would be as follows:
Connect to the access point from a laptop
From the laptop, navigate to pi_ip_address:port in a browser
From the browser, a list of available networks would be shown
From the browser, select an option and enter the password
From the Pi, connect to the selected network
Is this possible? If so, has anyone had success doing this and/or is there documentation available?
Thanks in advance
Related
I would like to understand it is possible to switch the ESP8266 connection between the cloud and WiFi LAN.
There are two paths to control the sonoff switch, connected to a wifi router. In case the phone is connected to the router, Path 1 acts as LAN network and ESP8266 can be controlled even without internet. In case I am not at home and would like to control the switch remotely via cloud, path 2 would be followed. Thus, I could get the best of both worlds.
From all the examples that i have seen so far ESP8266 could be operated in only one mode at one point of time, either Lan or cloud (both via the WiFi router).
So kindly help me with the switching code/logic, that will wait to work upon the commands provided via LAN mode if there are none left. Now it should work upon the instructions after switching to cloud mode and finally return to LAN mode after sometime and so on.
For security reasons your Sonoff device should not be reachable from the internet directly - ever. It should only be accessible within your local (home) network. That's your path 1.
To enable path 2 - without affecting the Sonoff device at all - you need a way to build a VPN from your smartphone to your local network. For the node it will look like all traffic is coming from your local network even though you are actually connecting into it from remote.
A fairly simple and cost-effective way to achieve this is to run PiVPN on a Raspberry Pi. See e.g. this video for instructions: https://www.youtube.com/watch?v=15VjDVCISj0
Just for reference the Sony Remote Camera API only works by using a 1:1 Wifi Connection
The Wifi signal strength of my Sony DSC-HX60V camera already drops after a few meters distance. But I want to be able to remotely control the camera over a range of 50 meter. There is no way that the onboard Wifi can achieve this range.
So now Iam looking for a solution to this problem. If it helps a local Wifi router exists that covers the whole range:
A normal Wifi repeater seems to be the best option, but according to a Forum Post using a repeater does not work, because the repeater acts a client and the camera can only connect to one client at the same time. Did someone got it to work with a repeater?
Additionaly I was thinking about using a Raspberry Pi with a second Wifi adapter that connect to the local Wifi and manages the API requests.
Any other ideas?
Disclaimer:
Even tho this Question may be more Hardware and Network related and thereby fits more into the SuperUser Network. A working Network connection does not necessary imply that the API is working aswell. This is why I posted this Question here
If you have a router which can work in 'client mode' that should be able to make a 1:1 connection with the camera, and then present that link over ethernet - you may have issues with network addresses and/or discovery if your main network is a different IP range to what the camera offers/DHCP's.
Some of the Sony cameras support 'multi-wifi' where the camera connects to an external device (normally the LiveViewRemote, but can be a router). Unfortunately the HX60 (and presumably any of the Play Memories SmartRemote app based ones) does not seem capable of this.... maybe the QX1 is an exception as it's supposed to work like this.
This connection connection is managed via WPS, and once connected the RemoteAPI works well. Works for my AS100.
If you are looking to set up a RaspPi, I can confirm that it works with this Python library:
https://github.com/Bloodevil/sony_camera_api
https://www.youtube.com/watch?v=xR3gAfu4Hfw
I'm connecting my Arduino Yún to my laptop via USB cable and as I read in Arduino documentation:
When you first power on the Yún, it will create a WiFi network called
ArduinoYun-XXXXXXXXXXXX. Connect your computer to this network.
But in my case nothing appears and I didn't found anything related to this on the web.
I'm running Windows 8.1 on my laptop.
Any idea how I can solve this problem?
It sounds as if something is wrong with the wifi configuration on the Yún. Has it previously been configured? Try resetting the wifi by pressing the "Wifi RST" button for more than five seconds (but less than 30).
More info here.
The question you asked is already answered by #mellbratt. You have successfully configured Yun and connected it to the network (configuration of WiFi by providing SSID and security key in web panel). The thing you have to do now, is to find what IP your Yun device is assigned on that network. You can use tools like Angry IP Scanner to scan the network and find your IP if you cannot access it from myusername.local. Using that IP you can access the web panel.
How is chromecast initially discovered before even connecting to wifi? What is the underlying technology?
Is it done using multicast if so will a device get an ip before providing wifi password to send multicast
https://superuser.com/questions/626199/how-does-google-chromecast-connect-to-secured-wifi
Chromecast acts as an access point when first turned on. The software you install software on your andriod, windows or mac device will find it and connect to the chromecast's AP directly. Then the chromecast scans for access points allowing you to pick one and enter in your password. Once this is done, it will connect to that access point instead of acting as it's own access point.
Is it possible to determine programmatically what jack on a network switch a computer is connected to?
It's either possible or not possible, depending on the switch.
If it's a managed switch, you could query its management interface to determine the MAC addresses behind each port. Then you could match that up with the hardware address on the computer you're interested in.
Some switches have discovery protocols (such as CDP or LLDP) which will broadcast the port's identity to whichever devices are attached. You could sniff the network for these packets to determine the port your computer is connected to.
You can try disonnecting them one by one and each time testing if the network connection goes down.
To identify switch port connected to your pc ; you need to manually access the switch and remove ur rj-45 cable so you can visualize any port having state of disconnection.. dm gui can be used if switch is managable
cdp and lldp wont work for pc as it doesnt support it