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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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Closed last year.
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I have a little problem with a Dell Latitude E5430 laptop with original Windows 10 Pro. After clean install the laptop is full functional. But... if the Windows Update install the lastest Intel HD 4000 driver, the laptop internal screen will be black. The internal screen works only in Safe Mode and the hdmi/vga ports are full functional. Its looks like the Win10 Pro doesnt recognize the internal screen.
In the Safe Mode the monitor drivers are disabled, and the internal screen work correctly, in the correct resolution.
Have anybody any idea? :)
I tried to:
- install Intel HD 4000 drivers /old one/lastest, doesnt work
- find different display driver, but i cant find anything.
Thanks!
Mark
Okay its ready!
It was the display cable. I removed the internal display cable and used wd40. Then I installed back and the screen is back to business.
I just troubleshot a similar problem successfully. I want to post this so it will come up in people's searches and maybe help them in the future.
My situation my dell would boot through is logo but the video card would stop outputting anything after that. Black screen, but also characterized by the monitor going into power save, and the led on the monitor slowly blinking.
Once in the menu that let's you navigate to safe mode I booted into that mode and found it was able to do so. All scans of hardware came up saying it was fine. No errors.
Internet says 3rd party drivers can stop windows boot, if they're corrupted or the like. My machine has a 3rd party graphics card that gives me some problems occasionally. Seems related to what I'm observing, so I roll that drive back to a windows basic display adapter driver. (Via device manager) -- Reboot but problem doesn't go away.
I recall I recently installed drivers for a Wacom one tablet. So I went ahead and removed that device via device manager. After rebooting this time the problem resolved.
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So I recently got the Lenovo x270, and installed Debian on it instead of the default Windows OS. I've come to find out WiFi, as well as ethernet are both shipped not working. I've tried to fix it, but nothing has worked so far. I switched from straight Debian 8 to Kali to see if it was just a problem in base Debian, but it wasn't. Laptop specs related to issue:
Intel® Dual Band Wireless-AC 8265
Kali Linux (Kernel 4.0.0)
1 Ethernet port
I installed the Intel drivers needed for the 8265 (http://www.intel.com/content/www/us/en/support/network-and-i-o/wireless-networking/000005511.html). However, this requires a kernel version of 4.6, which it doesn't seem I can get without apt-get which I can't use because I don't have internet.
I also attempted to manually add the ethernet using https://wiki.debian.org/NetworkConfiguration#Setting_up_an_Ethernet_Interface and a few other sources I've now lost, but that didn't work either. The main problem I'm having is it seems you need internet to be able to install various packages that allow you to get internet, so I'm not sure what to do. Any ideas would be a great help.
Thank you.
Without knowing the specific NIC, it's hard to say which specific driver is required though Lenovo lists the x270 has having an intel NIC. Running lspci should give you the manufacturer and device ID of the NIC, which enables you to lookup the device on sites such as http://pcidatabase.com/.
The kernel messages might contain useful debugging information, try running dmesg, it might give you information on detected devices or driver-issues.
The kernel might not have loaded the relevant module for the intel WNIC, try forcing it by running sudo modprobe iwlwifi.
Wireless networking devices require non-free firmware. For the intel 8265, this is available as a .deb-package at https://packages.debian.org/search?keywords=firmware-iwlwifi, .deb-packages can be installed using sudo dpkg -i packagename.deb.
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I have been trying to stream my webcam over http with a raspberry pi 2 using mjpg-streamer. It works to stream the webcam and also some of the image controls, like brightness, focus, etc...
What I cannot seem to get to work is the zoom controls on the logitech's QuickCam Pro 9000. On a windows PC with the logitech software, I am able to zoom in and out. Yet, using mjpg-streamer, I am unable to replicate this control.
I have looked at a lot of links include:
http://www.slblabs.com/2012/09/26/rpi-webcam-stream/
http://sourceforge.net/projects/mjpg-streamer/
http://blog.philippklaus.de/2010/03/logitech-quickcam-pro-9000/
http://sourceforge.net/p/mjpg-streamer/code/HEAD/tree/
https://www.raspberrypi.org/forums/viewtopic.php?t=10496&p=124750
https://github.com/jacksonliam/mjpg-streamer/tree/master/mjpg-streamer-experimental
http://blog.cudmore.io/post/2015/03/15/Installing-mjpg-streamer-on-a-raspberry-pi/
http://www.slblabs.com/2012/09/26/rpi-webcam-stream/
Yet, I have not been able to figure out the zoom control for the webcam. Anyone have any idea how to get the zoom controls working with mjpg-streamer or another video streamer for USB webcam for the raspberry pi?
It turns out that there are no zoom controls after all for the webcam. The windows software simply does a digital zoom on the video feed from the webcam.
If you would like this feature for mjpeg-streamer, then it may be an idea to use a javascript script to add some sort digital zoom controls for the video feed from the webcam in the browser.
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Being Belgian, all laptops come with windowsTM pre-installed. Ingnorantly, I bought on thinking I would be able to install (K)ubuntu. I found out the UEFI is just microsoft's way to prevent you doing this. It stops you booting from USB or CD, it does not allow installing Linux or anything.
I tried the F2/F10 options and settings, I disengaged the security options, disabled secure boot, changed boot order, I tried changing HD with compatible laptop and running OS, tried to bang it against my head, nothing lets me install Linux, it just says:"no bootable device found"
UEFI dual booting Linux and Windows is big tangled mess. I've pulled it off with Ubuntu and Fedora, but after a lot of effort. There are a lot of important variables here. I'm more likely to be able to offer a solution with the following info:
Which media are you using – USB or optical?
How did you create the media? (e.g. Pendrive, Rawwrite, etc.)
Which laptop manufacturer? (This is surprisingly relevant)
Also, it will help us all in the long run if we get more insight into the specific UEFIs and start documenting this issue more thoroughly. UEFIs are embedded software typically written by third-party companies like Insyde. You can find yours by installing a Windows system detailer like Speccy or HWInfo64. See the attached screenshot from Speccy. This info is unlikely to help here and now, but it will help us long-term: I'm looking to create a repository for these UEFI boot issues if someone hasn't done so already.
Try installing Fedora 22. There is a UEFI trampoline to get passed this hurdle. If I had a UEFI machine I'd have tested this answer; it is theoretical at best.
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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.