Raspberry Pi 4 doesn't boot when attaching camera [closed] - camera

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I am having problem connecting the camera module to my Raspberry Pi 4. The PI is working just fine, but when I attach the camera to the module, it just doesn't boot.
What might be causing this?

So you have a successfully booting system then after physically connecting the camera it will not boot?
First, double check the camera is connected properly. Meaning the blue side of the connections are facing the right way (i.e. blue side facing the USB ports on the RPi itself and facing the front of the camera on the camera module connection). A quick search found this post containing pictures, that is usually the issue. If that fails, consider options within the config.txt file on the /boot partition. Reference for config.txt.
One of the config options that gets added automatically when adding the camera interface via raspi-config is start_x=1 Camera entries within config.txt are described here. Be sure that you have enough memory configured (i.e. gpu_mem=128, though increasing that is probably a good idea if you're doing a lot with the GPU (motion detection, etc.). But the physical connection is most likely the culprit.

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Monitor going black for no reason [closed]

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Ok so, my monitor is going black on random occasions. Mostly it is when i watch a video. It doesn't matter if it is on youtube, facebook, udemy or whatever other site.
I checked my cables they are all good. I also turned off the screen saver.
Any ideas what it could be?
there could be many reasons for this - bad drivers, bad cables, bad screen, GPU overheating and melting solder connections (I've experienced this).
the easiest thing to check is to see if the issue is in the computer itself. to do that, connect to a different monitor (using a different cable).
to check if it's a software issue, you could try running a LiveCD of a different OS on your computer (for example, Fedora or Ubuntu).
if the issue still happens even with a different OS, then it's likely a GPU problem - you'll need to either get that replaced, replace the mainboard (if GPU is integrated), or replace the computer...

Reverse engineering a network interface [closed]

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Closed 7 years ago.
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not sure if this is the right place to ask such a question - if not, perhaps you can direct me to the right place?
I've recently purchased a walking treadmill for my standing desk. It has a standalone control panel, connected to the base via an exposed LAN port. The panel has a few drawbacks (it's huge, has awkward and noisy buttons, no pause/return) and I wonder if I could write something very simple to control the treadmill from my PC instead. I imagine I'd need an ethernet splitter and something for network snooping to see the payload from button clicks? I've never done anything like this, so any pointers would be much appreciated. Thanks all!
1st: Be sure that the port is a compliant ethernet port to avoid damage of your equipment.
A cheap setup to analyze traffic between two devices is the use of a ethernethub or a switch which can be configured to broadcast all trafic and a pc with an ethernetsniffer. An alterntive to an hub could be two bridged ethernetcards on a pc.
A common, free and feature rich sniffer is whireshark.

Setup port mirorring on Sonos speakers [closed]

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Closed 7 years ago.
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I'd like to capture the traffic sent by a Sonos speaker (to troubleshoot streaming issues).
I've found one way to do this but it's a bit cumbersome: I plug the Sonos speaker via an ethernet to usb adapter to my PC, share the PC connection and then capture on that interface.
It's limited to one speaker and if the speaker has ever been configured to use the WiFi, it seems that it uses WiFi even plugged that way (and I don't capture anything).
What's the detailed setup to use port mirorring to do this? I'd like to compare the two solutions and don't know much about port mirorring setup.
Thanks!
I would recommend getting yourself a network hub to plug Sonos and the computer into and capture from that.

Windows 8 screen doesn't fit monitor [closed]

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Closed 3 years ago.
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I've just installed Windows 8.1 (my friend tells me the PC will start and shut down faster than Windows 7). I encounter some problems: the screen doesn't fit correctly There are black bars at top and bottom of the screen.
My monitor is LG E2211. I tried using the buttons on the monitor but I can't change the original ratio and It says "Digital input No access" when I choose auto.
I found this topic which has similar problem but it's only for windows 7
http://www.tomshardware.com/forum/286677-33-black-bars-5850?
Also, all the games and videos is becoming a lot slower. My friend told me it's because the PC didn't recognize the graphic card. Is it correct?
Go to your official graphic card's manufacturer's website and download the latest driver. I Had the same problem with mine.
Sometimes the native driver struggles to register the correct resolution or place it off screen.

Connect three monitors to the same workstation [closed]

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Closed 8 years ago.
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I have an Nvidia Quadro 600 card in my workstation and was curious if there was any way I could use three monitors with the card without using external graphics hardware (Matrox display2go et al.). It has 1 Dual Link DVI-I port and 1 DisplayPort port. I'm using two monitors, one with each port but I would like to have a third one.
Is that possible somehow?
Thanks
You can. I have seen some thin client concept which connects through an ethernet cord. Monitor gets a power adapter, just like for mobile. I have seen this setup with a D-link manufacturer.. But it in fact works for any machine.
This is the solution to connect the third monitor: http://www.amazon.com/StarTech-com-External-Video-Monitor-Adapter/dp/B0086359SG/ref=sr_1_2?s=electronics&ie=UTF8&qid=1388206061&sr=1-2&keywords=usb+3.0+to+dvi
I have plenty of USB 3.0 so that is the best option.
Thank you anyway