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Closed 5 years ago.
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My system:
2x USB 2.0
1x 1000MBit Ethernet
Wifi
OS: Linux
I want to connect an usb-hub, but plugging it into the usb 2.0 is super slow. Is there a possibility to connect the usb-hub to the ethernet port? I am anyway only using Wifi for Internet. I don't care which Linux distribution to use as long as I can write images to sd-cards with it.
Google-"Research" only gives me "usb -> to -> ethernet" adapters but no usb-hubs pluggable into ethernet.
Thank you very much for any help :-)
is not possible because of the structure of USB protocol. USB requires a host device (normally the pc) and in an ethernet driver can never be implemented USB host functionality with reasonable effort. A USB hub is a device
ethernet-over-USB uses the USB CDC class and emulates an ethernet port (eth0,...) to the os. From the viewpoint of USB protocol in this case the structure is clear. pc is USB host Ethernet-over-USB adapter is USB device.
An ethernet port does not even know what an USB device is (protocol structure) and it does not even have the physical interface...
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Closed 2 years ago.
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I wanted to use my android phone as a display for my Raspberry Pi 4B, so I searched the internet, found an instruction and copied the code into my Pi, I was connected to (via SSH). This is the code I put into /etc/network/interfaces:
iface usb0 inet static
address 192.168.42.42
netmask 255.255.255.0
network 192.168.42.0
broadcast 192.168.42.255
This sets the IP to a static one (192.168.42.42).
I rebooted and tried to SSH with IP 192.168.42.42, because I thought, this was the new IP for the Raspberry Pi.
Long story short, it doesn't work. I also tried some other IP's, I cant find the IP in NUTTY or with nmap.
How can I connect to my PI now? (I don't have a monitor or a crossover LAN cable)
I'm using an older MacBook Pro with Linux Mint 19
Where I got the code from: https://joshuawoehlke.com/android-raspberry-pi-display-over-usb/
You could take the SD card out of the Pi and put it in your Mac/Linux machine and correct/remove the /etc/network/interfaces file from the SD card.
Or, you could go to the SD card's /boot partition and touch ssh in that directory so that sshd starts and also create in that same directory a wpa_supplicant file to match a temporary WiFi hotspot you create on your phone or Mac. Then you can ssh into it over WiFi and whatever you want.
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I am building some software on mac os x that uses iobluetooth and corebluetooth to connect/manipulate bluetooth devices.
Like most Bluetooth speakers, the Bluetooth classic network is hidden unless pairing but often the Bluetooth Low Energy network is visible.
I was wondering if there was some way to find a link to the Bluetooth classic section through the Bluetooth Low Energy network and use the details to establish a connection to the Bluetooth classic network.
I am assuming that your speaker is supporting both LE and classic Bluetooth profiles.
So you can connect le first by giving BD_ADDR and all the details for your speaker and later on you can change the transport to classic Bluetooth such as A2DP or SCO.
Thanks.
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Closed 3 years ago.
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Flashed five ESP8266 ESP-12e by using NodeMCU firmware. Then inserted each into the USB and no blue LED on the board came on. Only flashes momentarily when inserted then turns off. After this the "device manager" said we did have a COM9 port. Now COM9 is not there in the device manager. I have the drivers for CH341SER and CP2102 installed.
Arduino IDE has "port" but grayed out.
ESPlorer says "could not find any serial port".
NodeMCU says "Error:Serial port not exist".
Any possible solutions or should I throw the computer into a river?
Some laptops couldn't provide enough power to USB ports generating erratic behavior when connecting, Wifi connections draws much more power than a typical Arduino board. Try to use an externally powered USB dock. Worked for me!
I ran into the same problem. Successfully flashed the hardware with a custom .bin file made online through https://nodemcu-build.com/ then followed this tutorial here: https://www.youtube.com/watch?v=T-oSjMCmNYk now I can upload custom programs in c language to the node mcu hardware.
You will have to then restart your arduino IDE or whatever system/software you're using and follow the basic requirements to download the board related software and options in the ide there's plenty of tutorials for that basic work. The most important is the first step above.
Let me know if that worked for you or if you need further assistance.
Cheers
It looks like bad USB cable. Try another one.
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I'm trying to create an Arduino bluetooth remote that can connect with my Mac (and potentially other devices) and basically transmit a few distinct signals back and forth at the push of a button (or Arduino pushbutton). I want to create a remote to control a web app I've built, basically a controller for a game.
I have an Arduino Uno Rev3 starter kit, an RN-42 bluetooth module & a 1sheeld from Google Play, and a Macbook Pro.
Could anyone suggest good guides or online tutorials that can help me set up the communication from Arduino to my computer? Or does anyone have experience with this and would be able to give me some tips?
It's relatively straightforward.
bind the arduino bluetooth to your mac bluetooth.
use Serial.* print commands. Normally these go to your computer via USB, but if you have the Bluetooth connected it will go over the Bluetooth connection.
the default baud rate of most bluetooth devices is 9600 baud.
So, develop your code the same way as if you were connected via Serial over USB, and it will work without change when you attach the Bluetooth.
Note: Typically USB and Bluetooth will use the same pins, so you can only use one or the other, not both at the same time.
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Closed 8 years ago.
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I am at the stage of learning Linux.
I have just installed Fedora20, but I cannot connect to internet with
my Wireless USB adapter....
Can anyone help me to use internet in Linux fedora 20?
This question is probably going to get migrated to somewhere like Super User, but just to give you a starting point, does the Wireless adapter register as an interface? Run ifconfig -a on the terminal and look out for a wlan0.
Then run ifconfig wlan0 up, and you can then do iw dev wlan0 scan to list access points that the card can see. You can then do some Googling about connecting a wireless card using wpa-supplicant.
If you can't see a wlan0 interface in ifconfig it could be that you don't have the drivers for your Wifi card. You'll need to Google which drivers are required and you might be able to get a kernel module or driver binary from somewhere on the internet.