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by topguy
Tue Apr 23, 2019 3:10 pm
Forum: Beginners
Topic: Deluge version
Replies: 2
Views: 43

Re: Deluge version

The never version is most likely part of Raspbian Buster, the next Raspbian release wich I guess is currently under testing.
I'm not sure if there is an official way to install packages from it yet. Or that its even recommended.
by topguy
Tue Apr 23, 2019 2:03 pm
Forum: Automation, sensing and robotics
Topic: Adding a master card to rfid system
Replies: 6
Views: 72

Re: Adding a master card to rfid system

Then you have a place in your code where you do a lookup in the database, and instead of doing that lookup you first check if the cardId matches the mastercard ID. And if it does you just dont do the database check.
by topguy
Tue Apr 23, 2019 1:45 pm
Forum: Automation, sensing and robotics
Topic: Adding a master card to rfid system
Replies: 6
Views: 72

Re: Adding a master card to rfid system

i have a very complex rfid system
And you have made this system yourself ? Can you explain how it works because the words "master card" doesnt make much sense unless we have an Idea what its supposed to be "master" of.
by topguy
Tue Apr 23, 2019 1:30 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Wireless Communucation between Pi and Arduino
Replies: 1
Views: 31

Re: Wireless Communucation between Pi and Arduino

What exactly do you need help with ? - Connecting the UNO to Wifi ? ( Does the UNO have Wifi ? ) - Connecting the Pi to Wifi ? - Choose a protocol for communicatiion ? - Write the app for UNO - Choose a database ? - Choose a programming language for Pi. - Write the program for Pi ? Maybe more correc...
by topguy
Tue Apr 23, 2019 1:17 pm
Forum: Automation, sensing and robotics
Topic: Adding a master card to rfid system
Replies: 6
Views: 72

Re: Adding a master card to rfid system

The example prints the UID ( Unique Identifier ) for the card so you have to add some code that checks that value against the known UID of you "master card". And if the UIDs match you light the led/trigger the relay. add a master card that only i have access to the system But what do you really mean...
by topguy
Mon Apr 22, 2019 1:53 pm
Forum: Python
Topic: Send GPS data to thingspeak
Replies: 1
Views: 26

Re: Send GPS data to thingspeak

If you can link to the sources it would probably be helpful. File "/home/pi/Desktop/thinkspeakGPS/GPS_API.py", line 37, in get_latitude File "/usr/local/lib/python2.7/dist-packages/pynmea2/nmea.py", line 155, in getattr I would guess it has something to do with how get_lattitude() uses getattr().
by topguy
Sat Apr 20, 2019 2:03 pm
Forum: Python
Topic: Triggering a PiCamera with an RFID reader
Replies: 1
Views: 48

Re: Triggering a PiCamera with an RFID reader

You should probably learn to use the "picamera" python module to start and stop recording like you want. I suggest you make a seperate test program for that to see if you are able to start recording, do something else and then stop the recording when you feel like it. Then you need to learn about "i...
by topguy
Sat Apr 20, 2019 1:57 pm
Forum: General discussion
Topic: C code not executing in the Pi using Xenomai
Replies: 2
Views: 116

Re: C code not executing in the Pi using Xenomai

Not sure its the correct way but you could try to run it with "sudo" to see if its trying to access priveliged functions/devices.
by topguy
Sat Apr 20, 2019 1:54 pm
Forum: Python
Topic: NFC trouble to reading
Replies: 1
Views: 30

Re: NFC trouble to reading

It will probably be helpful if you tell us what you think your program is supposed to do. Or if you have copied from somewhere. OSError: [Error 2] No such file or directory I'm guessing that this error refer to the file "/usr/bin/nfc-poll" If you can run "nfc-poll" from the commandline successfully ...
by topguy
Wed Apr 17, 2019 9:51 pm
Forum: Troubleshooting
Topic: Reading data from GNURadio and GPS module with the raspberry
Replies: 1
Views: 37

Re: Reading data from GNURadio and GPS module with the raspberry

If you can be specific about which physical interfaces the modules ( radio and GPS ) have then I guess it will be easier to answer those questions.
Links to datasheets are particularely helpful.
by topguy
Wed Apr 17, 2019 2:04 pm
Forum: Python
Topic: How to save GPS Data to a text file?
Replies: 11
Views: 178

Re: How to save GPS Data to a text file?

Actually, I wants to save every gps (latitude and longitude) First you need to parse the raw GPS data into longitude and latitude values. There are some NMEA parsing libraries you can use for that.( maybe even some examples from adafruit how to use them too ) I wants to save it to .txt file which I...
by topguy
Wed Apr 17, 2019 9:25 am
Forum: Python
Topic: How to save GPS Data to a text file?
Replies: 11
Views: 178

Re: How to save GPS Data to a text file?

Do you have a GPS ? Do you know how it connects to the Pi ?
What is the purpose of the text file ? Who or what should read the file later ? Should it contain raw GPS data or only serve as a log of positions ?
How well do you know Python ?
by topguy
Tue Apr 16, 2019 4:06 pm
Forum: C/C++
Topic: Document hunt for Bluetooth C++ API
Replies: 1
Views: 79

Re: Document hunt for Bluetooth C++ API

Why is there so little programmer documentation for Bluetooth BR/EDR—which was released more than a decade ago? Becasue most people just use Bluez to set up (pair) the BT communication between the PC and the device. And then you dont care anymore about bluetooth. You now either have a new sound dev...
by topguy
Mon Apr 15, 2019 11:09 am
Forum: General discussion
Topic: How much power Supply is generated at USB port in Raspberry pi 3b+?
Replies: 4
Views: 145

Re: How much power Supply is generated at USB port in Raspberry pi 3b+?

The speakerphone probable should be working, but speaker elements should not be connected to the Pi without an amplifier, and 2.5W is probably not what that speaker is meant for.
by topguy
Mon Apr 15, 2019 10:21 am
Forum: Networking and servers
Topic: Server for live video streaming
Replies: 3
Views: 118

Re: Server for live video streaming

May I know what server does the Raspberry Pi used for live video streaming ? Do you mean what server you would be running on the Pi or what kind of server would you be streaming to ? If the video server would be running on the Pi, every connection would have to share the 4G network link. You can pr...
by topguy
Sun Apr 14, 2019 12:07 am
Forum: Automation, sensing and robotics
Topic: show the same video on 2 different display
Replies: 2
Views: 85

Re: show the same video on 2 different display

What connection is Wifi not Ethernet ?

I would normally suggest a HDMI splitter.
by topguy
Fri Apr 12, 2019 2:32 pm
Forum: Off topic discussion
Topic: I know this sounds like something from a Spy novel or makes me sound a like a crazy person but...
Replies: 26
Views: 640

Re: I know this sounds like something from a Spy novel or makes me sound a like a crazy person but...

A remote management tool is by definition a backdoor, a very useful backdoor when your server on the other side of the globe ( or disc if you are a flatearther :lol: ) is acting up. But if we continue this discussion with the assumption that none of these features are designed with the intent of bei...
by topguy
Fri Apr 12, 2019 2:15 pm
Forum: C/C++
Topic: Missing sharing libraries
Replies: 3
Views: 137

Re: Missing sharing libraries

It is relevant if this application was built with the standard Qt installation on Pi or not. ...but you can try this: export LD_LIBRARY_PATH=/opt/vc/lib You do this in the shell before trying to start the Qt application. You should also check if the file exists in the "/opt/vc/lib" directory. You mi...
by topguy
Fri Apr 12, 2019 1:39 pm
Forum: Gaming
Topic: Liberal Crime Squad: XML parsing problem
Replies: 2
Views: 106

Re: Liberal Crime Squad: XML parsing problem

I think only one that understand how the XML files is used to produce the text on the screen can really understand what is failing. - Maybe looking at the differences in the "configure" logs on the desktop build and the raspberry build of the same version can give some hints. - Maybe the build error...
by topguy
Fri Apr 12, 2019 12:08 pm
Forum: General discussion
Topic: Image SD but not working
Replies: 6
Views: 182

Re: Image SD but not working

Please provide link to any guide you might be following or else its impossible for us to understand what you are talking about and what you have done.
We are nerds, not psychics.
the problems referes to the SD and the write image process.
Describing those problems is also a good idea.
by topguy
Fri Apr 12, 2019 12:04 pm
Forum: Troubleshooting
Topic: PATH OK (I think) but ldconfig missing?
Replies: 2
Views: 71

Re: PATH OK (I think) but ldconfig missing?

Its very helpful if you show us what command you tried before you got the error. pi@pione:/etc/init$ which ldconfig /sbin/ldconfig pi@pione:/etc/init$ dpkg -S ldconfig manpages: /usr/share/man/man8/ldconfig.8.gz libc-bin: /sbin/ldconfig.real libc-bin: /sbin/ldconfig This is a direct link to the libc...
by topguy
Thu Apr 11, 2019 11:16 am
Forum: Beginners
Topic: Installation steps for clang on Rpi3 for std::thread with c++11 program
Replies: 1
Views: 92

Re: Installation steps for clang on Rpi3 for std::thread with c++11 program

Those entries for apt that fails belongs to even older version of Raspbian, Wheezy.. so they can be safely removed from your "/etc/apt/sources.list". I dont think they prevent normal updates.. and I still will suggest that you start from scratch with a Raspbian Stretch image. Any up-to-date guide yo...
by topguy
Wed Apr 10, 2019 4:27 pm
Forum: C/C++
Topic: std::thread not working with clang in rpi3
Replies: 3
Views: 160

Re: std::thread not working with clang in rpi3

Since its CLang 3.5 it matches my Raspbian Jessie installation. Raspbian stretch should have CLang 3.8 and 4.0 so maybe an upgrade to the newest Raspbian version helps.. ( I dont have a way to test that, but someone else might have. )
by topguy
Wed Apr 10, 2019 2:28 pm
Forum: General discussion
Topic: MiniDLNA and the USBs
Replies: 9
Views: 205

Re: MiniDLNA and the USBs

but when I am going to use a USB...
Maybe tell us "how" you use the USB...

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