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by topguy
Thu May 16, 2019 6:25 pm
Forum: Troubleshooting
Topic: FileZilla connection refused
Replies: 9
Views: 133

Re: FileZilla connection refused

I want a to make a robot that recognizes my 5 year old son when the PI-cam sees his face. So you want to use OpenCV for that job, but do you want to use a specific version of OpenCV ( 2 or 3) or specific programming language ( C/C++ or Python ) ? This seems like a good and detailed guide for instal...
by topguy
Thu May 16, 2019 2:32 pm
Forum: Troubleshooting
Topic: FileZilla connection refused
Replies: 9
Views: 133

Re: FileZilla connection refused

The date for that guide is 2013 according to the URL and page... I would not thrust any guide older than mid 2017 for OpenCV installation..

Lets go back ever further... what are you actually trying to achieve ?
by topguy
Thu May 16, 2019 2:15 pm
Forum: General discussion
Topic: Extend display from WinCE6 via Raspberry and VNC
Replies: 2
Views: 80

Re: Extend display from WinCE6 via Raspberry and VNC

i have a windows ce 6.0 device You have my sincerest condolences... :lol: and would like to extend its display to an hdmi monitor can i use a rasberry pi3 device to do this using a vnc connection or something else? If you can run an VNC server on your device then, the Pi can run the client and show...
by topguy
Thu May 16, 2019 2:02 pm
Forum: Beginners
Topic: install camera drive
Replies: 1
Views: 53

Re: install camera drive

You can access the command line interface ( aka: console aka: command prompt ) by opening a terminal from the desktop menu. ( LxTerminal I think its called )

You should give us a link to a datasheet for the other camera, googling the name does not give me a clear answer about what module that is.
by topguy
Thu May 16, 2019 1:10 pm
Forum: Troubleshooting
Topic: FileZilla connection refused
Replies: 9
Views: 133

Re: FileZilla connection refused

Error: mkdir /opt/vc/userland-master: permission denied FileZilla problem or "shell" problem ? /opt/vc is a system directory and only writable by superuser. You can give normal "pi" user superuser rights by using "sudo". EDIT: all the files inside gave the same error All the files inside what ? You...
by topguy
Thu May 16, 2019 12:00 pm
Forum: Troubleshooting
Topic: FileZilla connection refused
Replies: 9
Views: 133

Re: FileZilla connection refused

Neither SSH or FTP are enabled as standard on Raspbian. Either use "raspi-config" in a shell or the GUI application ( which I have never used so I dont know what its called ) to first enable SSH. I think that SFTP might work then, if not change protocol in FileZilla to "SCP" if possible.
by topguy
Thu May 16, 2019 10:59 am
Forum: Networking and servers
Topic: Connecting the Pi to multiple WiFi networks simultaneously
Replies: 3
Views: 100

Re: Connecting the Pi to multiple WiFi networks simultaneously

Each Pi would need 2 wifi-adapters, unless there is some supported Wifi-mesh-protocol I dont know about.
by topguy
Thu May 16, 2019 10:46 am
Forum: General discussion
Topic: Virtual Keyboard with QT Application and Raspberry Pi in fullscreen mode problem
Replies: 6
Views: 112

Re: Virtual Keyboard with QT Application and Raspberry Pi in fullscreen mode problem

There is this X11 utility call "xdotool" that can manipulate windows on the desktop.
http://linuxcommandlibrary.com/man/xdotool.html

You could add that to your script.
by topguy
Wed May 15, 2019 8:09 pm
Forum: Troubleshooting
Topic: QMediaPlayer do not work on rpi3b +
Replies: 1
Views: 30

Re: QMediaPlayer do not work on rpi3b +

Normally I would say that you are missing the "gstreamer1.0-dev" package, but I cant find that Stretch have such a package. Edit: did a better search and found that there is a package called "libgstreamer1.0-dev", that probably should be installed. Everything "configure" does is logged in a file ca...
by topguy
Wed May 15, 2019 12:29 pm
Forum: Camera board
Topic: Take picture with USB Camera at incoming signal
Replies: 5
Views: 173

Re: Take picture with USB Camera at incoming signal

If you want to continue with Python then there are "fork"ing methods quite similar to what you have in C:
https://www.python-course.eu/forking.php
by topguy
Wed May 15, 2019 12:19 pm
Forum: General discussion
Topic: Virtual Keyboard with QT Application and Raspberry Pi in fullscreen mode problem
Replies: 6
Views: 112

Re: Virtual Keyboard with QT Application and Raspberry Pi in fullscreen mode problem

How do you start "matchbox" ? system() call ? Some Qt process class ?
by topguy
Wed May 15, 2019 12:17 pm
Forum: Other programming languages
Topic: HTML power button
Replies: 5
Views: 109

Re: HTML power button

Im guessing threadstarter ( and me too ) would like to see an example of that in HTML.
by topguy
Tue May 14, 2019 2:19 pm
Forum: Beginners
Topic: Serial communication between camera and Pi
Replies: 2
Views: 69

Re: Serial communication between camera and Pi

- Double check wiring.. Tx->Rx / Rx<-Tx
- Double check baudrate..
- Add a small pause and a "ser.close()" after the write.
by topguy
Tue May 14, 2019 2:15 pm
Forum: Networking and servers
Topic: Is it possible to share the internet connection from my RPI3B+ to a second device through USB?
Replies: 12
Views: 250

Re: Is it possible to share the internet connection from my RPI3B+ to a second device through USB?

So I have to get thought this issue only with physical USB connection between RPi3 and the second device. I can not use any kinds of USB dongle, extra things. Why is the "no dongles" so important, any physical USB connection between two devices is going to occupy ONE usb port on each device regardl...
by topguy
Tue May 14, 2019 2:07 pm
Forum: Other programming languages
Topic: HTML power button
Replies: 5
Views: 109

Re: HTML power button

What is the web-server that is running on the Raspberry Pi ?
by topguy
Tue May 14, 2019 12:17 pm
Forum: C/C++
Topic: Programming bluetooth using C++
Replies: 3
Views: 123

Re: Programming bluetooth using C++

Why not make "starting the bluetooth service" a part of the system boot ?
Is there a "bluetooth" service you can start or enable with systemd ?
by topguy
Tue May 14, 2019 12:08 pm
Forum: General discussion
Topic: Virtual Keyboard with QT Application and Raspberry Pi in fullscreen mode problem
Replies: 6
Views: 112

Re: Virtual Keyboard with QT Application and Raspberry Pi in fullscreen mode problem

Are you using OpenGL or OpenGLES in Qt ? Is it the standard Qt5 that comes with Raspbian ?
by topguy
Mon May 13, 2019 4:22 pm
Forum: Off topic discussion
Topic: 3d design program
Replies: 12
Views: 334

Re: 3d design program

There is a lot of different types of 3D Design so maybe be more specific what kind of design you plan to do.

Blender is one of the most well known one.
https://www.blender.org/
by topguy
Mon May 13, 2019 2:20 pm
Forum: Beginners
Topic: Help! Boot Tft LCD when HDMI is not plugged in.
Replies: 1
Views: 48

Re: Help! Boot Tft LCD when HDMI is not plugged in.

This is just an idea... How is it working now ? Always desktop only on GPIO screen, or desktop on both if you boot to HDMI ? And if there is desktop on both, is it the same desktop or two different desktops ? I assume you TFT screen is running on "/dev/fb1" while HDMI is normally "/dev/fb0". I dont ...
by topguy
Mon May 13, 2019 12:17 pm
Forum: Networking and servers
Topic: Is it possible to share the internet connection from my RPI3B+ to a second device through USB?
Replies: 12
Views: 250

Re: Is it possible to share the internet connection from my RPI3B+ to a second device through USB?

1. It communicates USB CDC ACM between my RPi3 B+ and the second device( few commands and response ) The USB of the RPi3 can only be in "host" mode (as far as I know). So what exactly is your "second device" ? The RPi3 can not "be" or "emulate" a CDC-ACM device. If both devices are USB hosts then y...
by topguy
Mon May 13, 2019 10:11 am
Forum: Troubleshooting
Topic: Read error at byte , Unexpected EOF in archive
Replies: 1
Views: 53

Re: Read error at byte , Unexpected EOF in archive

You have a full disk maybe ?

Code: Select all

df -h
by topguy
Fri May 10, 2019 3:32 pm
Forum: Troubleshooting
Topic: Half of the connection stack stops responding
Replies: 2
Views: 70

Re: Half of the connection stack stops responding

Do you have SSH enabled ? Can you still login via that for easier debugging. You dont say what you have done so far so I'm just listing the things I would have tested. - check free partition space. - Apache logs. - "journalctl" for complete system/service logs. - Install "dstat" and "htop", maybe ha...
by topguy
Fri May 10, 2019 3:01 pm
Forum: Beginners
Topic: Projection mapping software advice/issues
Replies: 4
Views: 133

Re: Projection mapping software advice/issues

it got stuck on ntfs-3g, saying -3g isn't recognized.
Quite helpful if you do this command via ssh/putty on a different computer and can cut&paste both the exact command and the whole response in this thread.
Sounds to me like you might have had a extra space making it "ntfs -3g".
by topguy
Thu May 09, 2019 7:20 pm
Forum: Beginners
Topic: Projection mapping software advice/issues
Replies: 4
Views: 133

Re: Projection mapping software advice/issues

- Explaining what a "projection mapper" does/is could be a good idea.
- Providing links to the guides you were following, lets us evaluate if its a guide worth following or point out errors in it.
( why make US google when you already know the links )
by topguy
Thu May 09, 2019 10:09 am
Forum: Troubleshooting
Topic: PiVPN Installs but Commands Don't Execute
Replies: 2
Views: 67

Re: PiVPN Installs but Commands Don't Execute

Quite hard for us to comment on random scripts used from the internet.
And you have a combination of two here, Octoprint and PiVPN.

If the Octoprint installed as an image or as a software package on top of Raspbian ?
Maybe check the registered issues for pivpn: https://github.com/pivpn/pivpn/issues

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