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by topguy
Sat Aug 18, 2018 2:03 am
Forum: Networking and servers
Topic: [QUEST] how to create a websever on raspberry pi
Replies: 2
Views: 87

Re: [QUEST] how to create a websever on raspberry pi

This seems pretty relevant.. goes into some detail about myphpadmin/mariadb users.
https://www.youtube.com/watch?v=EmrWLj2CE00
by topguy
Sat Aug 18, 2018 1:49 am
Forum: Troubleshooting
Topic: Qt application not visualized on VNC
Replies: 3
Views: 85

Re: Qt application not visualized on VNC

If it works with EGLFS then you have cross compiled Qt5 yourself I assume. If you run your app with parameter "-platform blah" the program should not recognise "blah" and print a list of the known rendering platforms. If you dont see xcb on that list, it wont work whatever you try, its not compiled ...
by topguy
Mon Aug 13, 2018 8:45 pm
Forum: Graphics, sound and multimedia
Topic: How to control LED color by audio file?
Replies: 1
Views: 69

Re: How to control LED color by audio file?

Which LED ?
When should the LED change ?
What parameter about the audio decide color of LED ?
by topguy
Mon Aug 13, 2018 8:20 pm
Forum: Python
Topic: Controlling my Mindstorms ev3 via Python from Raspberry Pi
Replies: 3
Views: 81

Re: Controlling my Mindstorms ev3 via Python from Raspberry Pi

Instructions for connecting EV3 to Windows indicate that the bluetooth is used as a serial connection so for tips on setting that up on the Pi, google "bluez rfcomm" I'm not an expert on that hardware but some googling very quickly ended up with "ev3dev" which is a linux for the EV3 for development ...
by topguy
Sun Aug 12, 2018 11:15 pm
Forum: Beginners
Topic: Raspberry 3b+ : which video player with hardware acceleration
Replies: 5
Views: 119

Re: Raspberry 3b+ : which video player with hardware acceleration

What video player can i use , which use harware acceleration and which is user friendly ?
https://duckduckgo.com/?q=Install+Kodi& ... org&ia=web
by topguy
Sat Aug 11, 2018 12:07 pm
Forum: Python
Topic: fixing frame rate on senseHAT using python
Replies: 2
Views: 58

Re: fixing frame rate on senseHAT using python

If you had added the link to that page we could have said something about that solution.
Have you tried to run the "watch .... " command in a terminal ? I dont believe that command returns/ends so your program might just stop there if you call it from python.
by topguy
Sat Aug 11, 2018 11:45 am
Forum: Networking and servers
Topic: Send and Receive JSON Messages Over Wifi
Replies: 1
Views: 69

Re: Send and Receive JSON Messages Over Wifi

Any particular programming language you know better than others. If you only want to make a simple web-service and not really show a lot of web-pages then it can be easier to skip the NGINX ( or apache ) solution and implement the HTTP as part of the program that creates the JSON response. For examp...
by topguy
Sat Aug 11, 2018 11:07 am
Forum: Troubleshooting
Topic: Error when opening a Qt window terminal
Replies: 6
Views: 102

Re: Error when opening a Qt window terminal

Explain "via remote access".
by topguy
Fri Aug 03, 2018 3:23 pm
Forum: C/C++
Topic: Errors when trying to compile simple program
Replies: 8
Views: 268

Re: Errors when trying to compile simple program

If you include the actual output/errors from the command, more people will be able to help.
by topguy
Fri Aug 03, 2018 3:15 pm
Forum: Other projects
Topic: Using Re writable Smart Cards to store Data
Replies: 3
Views: 84

Re: Using Re writable Smart Cards to store Data

I feel like NFC tags probably are the most suitable, but I'm then assuming that you want the reading of the info to be "a deliberate act". Meaning that someone presents the tag to a reader with the purpose of reading the information on it. If you want to read every tag within an area of 10 meters, t...
by topguy
Wed Aug 01, 2018 2:40 pm
Forum: Beginners
Topic: setting up usb camera with pi
Replies: 1
Views: 67

Re: setting up usb camera with pi

- Google for "idVendor=18ec, idProduct=3399" or "18ec:3399" if you want to find info about this model of camera and Linux.
- the modprobe is just for enabling V4L2 on the official Pi camera, its not for USB cameras.
- What kernel version are you using on Ubuntu ?
by topguy
Wed Aug 01, 2018 2:33 pm
Forum: Beginners
Topic: Connected usbhdd-drive from other Linux machine
Replies: 2
Views: 66

Re: Connected usbhdd-drive from other Linux machine

would it help, if I were to make a group 1001 and a user 1001 and than cross-reference them with fred44nl ??
Yes probably..
by topguy
Wed Aug 01, 2018 2:31 pm
Forum: Python
Topic: byte array to hexa string for CRC use
Replies: 4
Views: 89

Re: byte array to hexa string for CRC use

Are you really sure there is no alternative function that takes byte-array as parameter, because I'm pretty sure the first thing that happens in binascii.crc_hqx() is to convert the string back into a bytearray.
by topguy
Wed Aug 01, 2018 2:28 pm
Forum: Advanced users
Topic: Turn RPi into a python3 kiosk when usb bar-code reader is plugged in
Replies: 2
Views: 112

Re: Turn RPi into a python3 kiosk when usb bar-code reader is plugged in

In what kind of environment does your Pi live if you cant control if someone plugs in the reader and starts scanning stuff ? Is there a problem with running the program without the barcode reader plugged in ? How is your program reading the scanned codes from the scanner ? Is it a GUI program that n...
by topguy
Tue Jul 31, 2018 5:19 pm
Forum: AIY Projects
Topic: Google AIY doesn't respond
Replies: 11
Views: 281

Re: Google AIY doesn't respond

Are you still running the demo ?
There is not really enough information here to help you, what exactly have you done, what do you see in the terminal ?
by topguy
Tue Jul 31, 2018 5:16 pm
Forum: Beginners
Topic: VNC Config
Replies: 4
Views: 138

Re: VNC Config

What VNC client do you use on the other PC ? Have you tried to turn on "scaling" in the client, so that the image is scaled to the local resolution. ( What is the resolution ? ) I know that might make all the text unreadable, I just want ed to check if you have tested it. - Do you need to control th...
by topguy
Tue Jul 31, 2018 2:29 pm
Forum: Beginners
Topic: Facebook Like Counter on ePaper Display
Replies: 1
Views: 78

Re: Facebook Like Counter on ePaper Display

Waveshare sells the screens with special HATs for Raspberry Pi so I guess its not too difficult to get that part working. Using the Facebook API, I have no knowledge about. I think you might get the PiZeroW running at 100-150mA ( https://raspi.tv/2017/how-much-power-does-pi-zero-w-use ) but that sti...
by topguy
Tue Jul 31, 2018 1:55 pm
Forum: General programming discussion
Topic: CMakelist in raspberry pi 3
Replies: 2
Views: 108

Re: CMakelist in raspberry pi 3

Start by removing the GXX_FLAGS that gives the error, they only work on Intel/AMD CPU. You dont have to tell the compiler to compile for ARM, it will do that by default. After you have verified that your program compiles and run, then you can add some questions about which flags to use to optimize f...
by topguy
Tue Jul 31, 2018 1:48 pm
Forum: Beginners
Topic: How to open navit from kodi?
Replies: 22
Views: 519

Re: How to open navit from kodi?

How would you start "navit" outside of Kodi ?

In a terminal if you write the command "which navit" you will probably get the response "/usr/bin/navit" or something similar which is the full path to the "navit" executable. You might try to enter that full path into the field in Kodi.
by topguy
Mon Jul 30, 2018 3:45 pm
Forum: C/C++
Topic: Need help resolving cross compiler error ...
Replies: 1
Views: 125

Re: Need help resolving cross compiler error ...

I get the error “cannot execute binary file: Exec format error.” When I see such an error I automatically think that this compiler is made to run ON the Pi itself, not on an x86/amd64 machine. You can probably confirm that by using the "file" command on that file. It will tell you a lot about what ...
by topguy
Mon Jul 30, 2018 1:11 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Routing Real USB data to serial or SPI or I2C of raspberry pi
Replies: 3
Views: 141

Re: Routing Real USB data to serial or SPI or I2C of raspberry pi

I want to reroute data(write) to serial device from /dev/pcanusb3x devices and read the same data from serial devices(/dev/serialx). What would be the purpose of this ? In Linux all devices are "files" so reading from your pcanusb3x device would be very similiar to reading from a serial device. Do ...
by topguy
Mon Jul 30, 2018 12:43 pm
Forum: Beginners
Topic: How to open navit from kodi?
Replies: 22
Views: 519

Re: How to open navit from kodi?

Have you installed "navit" on the Pi ?
by topguy
Fri Jul 27, 2018 3:31 pm
Forum: Other projects
Topic: Using (multiple) Pi as a main stream computer
Replies: 4
Views: 186

Re: Using (multiple) Pi as a main stream computer

bobfunduro wrote:
Fri Jul 27, 2018 3:09 pm
I'm thinking of using a Pi as a main stream computer.
Stream what/where/how ?
by topguy
Fri Jul 27, 2018 2:06 pm
Forum: Beginners
Topic: How to open navit from kodi?
Replies: 22
Views: 519

Re: How to open navit from kodi?

but what code do I need to insert to make it work and overlay kodi in the button it's settings? I'm not even sure how to read this sentence correctly.. can you expand a bit about exactly what setting you are talking about and what you mean with "code".. Refering us to another (unlinked) thread for ...
by topguy
Fri Jul 27, 2018 1:58 pm
Forum: Android
Topic: Getting Started in Android APP with Raspberry Pi
Replies: 2
Views: 201

Re: Getting Started in Android APP with Raspberry Pi

go to ngrok homepage and look for new download link maybe..

https://ngrok.com/download

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