Raspberry Pi 2 (3.18.7-v7+) with Wi-Fi dongle TP-Link TL-WN823N (8192CU chipset).
I am creating a hotspot on Windows with TP-Link TL-WN823N and configured auto connection on the Raspberry Pi. But when I stop the hotspot, in most of the cases, 'wpa_cli status' shows connected state (wpa_state=COMPLETED).
I am unable to detect the source of problem. Please tell me what could be the problem and its possible solution.
Related
As the title says, I want to run a script on the Raspberry Pi from my Windows PC. The connection between PC and Raspberry Pi 4 (Raspbian OS) should be done using an Ethernet cable. The Rasperry Pi cannot be operated permanently in the network. Is it correct that then a SSH connection is out of the question?
For background: the Raspberry Pi is connected to a camera and a stepper motor. Depending on the position of the object to be photographed, the stepper motor is moved and then a photo is taken. This photo is then to be sent back to the PC via the network cable. The script on the Raspberry Pi (rotation stepper motor and image capture) is implemented with Python and fully functional. Is it generally possible to run the Pi script using the Ethernet cable and transfer the generated images back?
Using a Windows QT GUI I want to start this script and display the images later.
Is this possible or can someone suggest a simpler way? Maybe someone already had a similar problem and would help me.
Many thanks in advance.
If you have an extra Ethernet NIC on your computer, you can directly connect your PC and Raspberry PI (on relatively newer hardware) or if that doesn't work, you can use a crossover Ethernet cable to connect your PC to the PI. Then configure an ssh server on the PI and enable Avahi and dhcpd and execute your script via that using MSYS ssh or Putty (ssh pi#hostname.local). Don't forget to change your hostname.
Bonus tip: you can also send your data (images) back over the same connection.
I'm playing with Raspberry Pi 3 Model B and Android Things. I was able to configure everything (connect Pi over Ethernet, then reconnect over Wi-Fi with Android.local) and debug the app. However it's not convenient sometimes to debug over Wi-Fi when I travel and I have to change Wi-Fi networks or don't have Wi-Fi connection at all.
I know there is serial debug console, but it seems to be for getting logs and shell commands, not for debugging.
Any chance to have direct debugging over USB cable just like any other Android device like smartphone/tablet?
How to debug Android Things device over USB?
Briefly: you can't do it with Raspberry Pi.
Why not?
Let's look at the pin specification of Raspberry Pi micro USB (J1):
where
1: power
2: D- (data out), not connected
3: D+ (data in), not connected
4: NC, not connected
5: GND (ground)
So summing up the above said: no data pin connection - no adb. You can only power your RPi over micro USB.
Any chance to have direct debugging over USB cable just like any other Android device like smartphone/tablet?
Use another board. In fact, any board that has USB OTG and is supported by Android Things would allow debugging over USB, just as a "regular" smartphone/tablet.
And ironically, by the time of this writing, all the supported hardware platforms would fit except for Raspberry Pi :)
The NXP i.MX7D development board has the same pins as the Raspberry Pi for development, however it uses USB-C for power and ADB.
Highly recommend it over the Raspberry Pi
https://developer.android.com/things/hardware/imx7d.html
(source: android.com)
Another option is to setup Wi-Fi access point on your laptop and allow the Pi to connect to it. I have not tested it but it should work.
I am currently working on internet of things technology, in one of my scenarios I want to connect raspberry pi2 through the mobile network.
Please tell me is there any possibility to connect with raspberry pi2 through the mobile network.
Regards,
Pradeep
You can connect your Pi2 to a mobile network using either a USB 3G Dongle or a 3G Shield.
You will have to play around with the setup though to see how it works for you.
If you want to access your Pi2 from elsewhere while connected to a mobile network you will also need to setup dynamic ip resolution for your Pi if you do not have a fixed ip assigned by your mobile operator.
If, however you want to connect from a mobile device to your Pi2 which is located on a LAN, you will need to configure port forwarding on your router for the Pi2 to receive communication from the outside world. Once again, if your router does not have a fixed ip supplied by your ISP, you will need to setup a dynamic ip resolution (DDNS).
Hope this helps.
I have a Comfast CF-WU810N V2.0 - 2.4GHz 802.11b/g/n 150Mbps USB 2.0 Wireless Wi-Fi Network Adapter. It works with most of my devices but not with my Raspberry Pi. I want to set it up with my Raspberry Pi 2 Model B running windows 10 iot core. How do I do it? Please Help!
As of today the only supported WiFi dongle is the official Raspberry Pi dongle. This is known and actively being worked on.
I have a type B Raspberry Pi running perfectly with USB keyboard and USB mouse both plugged in.
However pi freeze in all the following combinations,
USB keyboard + USB wifi adapter (CUI)
USB mouse + USB wifi adapter (GUI)
In CUI, pi reboots every time I hot plugged in the adapter, and freezes on asking for login id.
If I boot pi with wifi preplugged in, pi also freeze on asking for login id.
In GUI, it does not reboot but freeze when I hot plugged in the adapter.
It is true when I boot pi with preplugged in.
Could someone please advise me how to fix this?
Your raspberry pi does not have beefy enough USB ports to power the wifi adaptor. Get a powered USB hub.