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by topguy
Sat Jul 13, 2019 12:56 pm
Forum: Troubleshooting
Topic: Unmet dependencies
Replies: 4
Views: 270

Re: Unmet dependencies

Problems regarding the installation and running the app are being reported as bugs and suggested fixes are posted. https://github.com/alexa/avs-device-sdk/issues/1405 https://github.com/alexa/avs-device-sdk/issues/1413 I don't have a Pi running Buster yet so I can't test any potential fixes. Alexa i...
by topguy
Fri Jul 12, 2019 12:11 pm
Forum: Troubleshooting
Topic: Unmet dependencies
Replies: 4
Views: 270

Re: Unmet dependencies

More likely, no one has had tested/adjusted the setup.sh script for Buster yet.. I look at this "pi.sh" and it seems to refer to libcurl4-openssl-dev now, so maybe run the "wget" again to update pi.sh. install_dependencies() { sudo apt-get update sudo apt-get -y install git gcc cmake build-essential...
by topguy
Fri Jul 12, 2019 11:11 am
Forum: General discussion
Topic: Raspberry pi question (Adafruit’s servo bonnet, can I combine it with other HAT's?)
Replies: 9
Views: 366

Re: Raspberry pi question

"Raspberry pi question" - what other kind of question would you ask on this site? A lot of very generic Linux or programming questions are being asked ( and answered ) all the time on this forum. While the question is usually asked in the context of a Pi, the answers are not Pi specific because the...
by topguy
Fri Jul 12, 2019 10:53 am
Forum: Troubleshooting
Topic: Java code to android app?
Replies: 1
Views: 78

Re: Java code to android app?

I don't think you can.. while you can program Android with the Java language that does not mean its compatible with the JRE ( Java run-time environemt ) that we use on PC's. Java libraries are quite different from Android libraries.
by topguy
Fri Jul 12, 2019 10:47 am
Forum: Beginners
Topic: Booting into a java app without a full OS
Replies: 1
Views: 88

Re: Booting into a java app without a full OS

If the Java APP has a GUI it needs to render that UI on something. Simplest way is to use X-windows, but you can start your app in "kiosk-mode" so that you dont need to load the "desktop". That saves on memory and resources. You can either use the full Raspbian OS and just disable automatic boot to ...
by topguy
Fri Jul 12, 2019 10:34 am
Forum: Troubleshooting
Topic: BT-Q1000x GPS gives NO FIX with cgps but works with gpsmon
Replies: 4
Views: 139

Re: BT-Q1000x GPS gives NO FIX with cgps but works with gpsmon

Code: Select all

$GPGSA,A,1,,,,,,,,,,,,,,,*1E
gpsd is not producing any location info because you dont have a "lock".

Code: Select all

$GPGSV,1,1,00*79
Also the GPS can not see ANY satellites.. so either connect the antenna or take the GPS out of your bunker.
by topguy
Thu Jul 11, 2019 5:01 pm
Forum: General discussion
Topic: Raspberry pi question (Adafruit’s servo bonnet, can I combine it with other HAT's?)
Replies: 9
Views: 366

Re: Raspberry pi question

So I want to use Adafruit’s servo bonnet, a few other bonnets and a couple of sensors with my raspberry pi zero. But what are you going to use them for ? is there a way to connect multiple raspberry pi’s together to run as one and use all of the GPIO pins? Not really, you can make a distributed app...
by topguy
Thu Jul 11, 2019 11:44 am
Forum: Troubleshooting
Topic: BT-Q1000x GPS gives NO FIX with cgps but works with gpsmon
Replies: 4
Views: 139

Re: BT-Q1000x GPS gives NO FIX with cgps but works with gpsmon

Can you post some output (10 seconds or more) from the "gpspipe -w" command ? Maybe put it on a pastebin site and link it.

Code: Select all

$GPGSA,A,1,,,,,,,,,,,,,,,*1E
You need this line to have "A,3" and a list of satellite numbers to have a proper position lock.
by topguy
Thu Jul 11, 2019 11:39 am
Forum: Beginners
Topic: [SOLVED] Serial Communication in RPI3
Replies: 32
Views: 1168

Re: [SOLVED] Serial Communication in RPI3

Great to hear that you got it to work in the end.
by topguy
Thu Jul 11, 2019 11:31 am
Forum: Networking and servers
Topic: How can I update from PHP 7.0 to PHP 7.1?
Replies: 10
Views: 910

Re: How can I update from PHP 7.0 to PHP 7.1?

Being prepared for a full reinstall is something everyone should be, an SD card can break at any time.
Having done it before and noting down all the necessary steps is a great exercise.
by topguy
Wed Jul 10, 2019 7:01 pm
Forum: General discussion
Topic: Buster can't play MPG2?
Replies: 8
Views: 551

Re: Buster can't play MPG2?

"decoding" and "rendering" are two different things, if you don't set up the rendering pipeline correctly it doesn't matter how fast you do the decoding.
I'm pretty sure smooth playback of MPEG2 on earlier Pi models also depended on using the GPU correctly for fullscreen rendering.
by topguy
Wed Jul 10, 2019 6:48 pm
Forum: Networking and servers
Topic: Raspberry Pi with android App
Replies: 9
Views: 383

Re: Raspberry Pi with android App

My idea is to use a local network to not use internet. There are normally only 3 ways communicate with an Android mobile phone. You can use a) Bluetooth, you can use b) Wifi or you can use the c) GSM/3G/4G data interface. ( I'm ignoring SMS ) c) Almost always will connect you to the internet. And c...
by topguy
Wed Jul 10, 2019 2:08 pm
Forum: Networking and servers
Topic: Raspberry Pi with android App
Replies: 9
Views: 383

Re: Raspberry Pi with android App

I can't find information about it. Be more specific what "it" is. There is nothing different about transferring data between two units on a LAN or over internet, just less firewalls to worry about. Will the PiZ take pictures all the time or only when requested by the phone ? Will you be "sending" (...
by topguy
Wed Jul 10, 2019 1:58 pm
Forum: Python
Topic: Can't access package outside virtual environment from inside of virtual environment
Replies: 4
Views: 151

Re: Can't access package outside virtual environment from inside of virtual environment

Can't access package outside virtual environment from inside of virtual environment I think this is basically the definition of a virtual environment... tensor flow only works outside of the environment and open cv only inside virtual environment What is the basis for using the work "only" ? Is the...
by topguy
Wed Jul 10, 2019 1:55 pm
Forum: Troubleshooting
Topic: Problems running PiCamera and Omxplayer
Replies: 4
Views: 117

Re: Problems running PiCamera and Omxplayer

Normally neither camera preview nor omxplayer will be visible over VNC, are you using RealVNC with the enabled experimental feature for grabbing these ?
by topguy
Wed Jul 10, 2019 1:37 pm
Forum: Raspbian
Topic: Where can I check a rasbian package changelog?
Replies: 2
Views: 129

Re: Where can I check a rasbian package changelog?

You have "packages.debian.com" which I use frequently, but of course it only contain the history for the packages that are identical in debian and raspbian. So if you go to the page for a package for example: https://packages.debian.org/buster/libncurses5 and on the right side you have links to chan...
by topguy
Wed Jul 10, 2019 10:33 am
Forum: General discussion
Topic: Buster can't play MPG2?
Replies: 8
Views: 551

Re: Buster can't play MPG2?

Did you buy MPEG2 licenses for the other Pis ? What resolution are these video files ? You cant buy MPEG2 licenses for the Pi4 but it should also have enough power to decode them without GPU help. You are not the first to report this problem so I'm not sure exactly what is wrong with the VLC version...
by topguy
Wed Jul 10, 2019 10:22 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 23
Views: 1212

Re: Anyone cross compiled QT for the Pi 4 yet.

Just a quick reminder of the "ldd" command which will list the libraries (and their path) that will be loaded when running the executable file you use as parameter for "ldd".
by topguy
Wed Jul 10, 2019 10:18 am
Forum: Raspbian
Topic: No Docker for Raspbian Buster
Replies: 24
Views: 8436

Re: No Docker for Raspbian Buster

Buster was just released it went from "testing" to "stabe".
I think you just need to do an "apt upgrade" and answer yes to change the release type.

Edit: Yes, I actually meant "sudo apt update"..
by topguy
Tue Jul 09, 2019 3:57 pm
Forum: Graphics, sound and multimedia
Topic: Buster FFMPEG h264_mmal
Replies: 2
Views: 457

Re: Buster FFMPEG h264_mmal

But now, no mather what i try..
You have only told us how you compiled it, not how you use it or what you are trying to do.
by topguy
Tue Jul 09, 2019 1:16 pm
Forum: Graphics programming
Topic: run the HDMI and TFT screen simultaneously
Replies: 37
Views: 30325

Re: run the HDMI and TFT screen simultaneously

I have only ideas, not final solution... Like 6by9 suggested I've also maybe seen a thread for the experimental OpenGL drivers for Stretch where you could maybe define extended desktop or something. I dont know if mirroring was possible. James mentioned it here: https://www.raspberrypi.org/forums/vi...
by topguy
Mon Jul 08, 2019 10:49 am
Forum: General discussion
Topic: Recommended Software error
Replies: 3
Views: 968

Re: Recommended Software error

I think we would like to see exactly what command you wrote and the error, its great if you can find a way to cut&paste so we avoid "raspbian" / "raspbain" errors. I using raspbain raspbian on my pi. Yes but which version ? did you upgrade to Buster from Stretch or just installed a fresh image ? But...
by topguy
Mon Jul 08, 2019 10:36 am
Forum: General discussion
Topic: PI4B - Graphical User Interface Question.
Replies: 3
Views: 263

Re: PI4B - Graphical User Interface Question.

Currently the GUI preforms lots like windows, before video card drives are installed.
Please remember that you are still running a 35$ computer. ;) The Pi4 is not THAT big of a leap in performance.

But I'm curious, where did you read this stuff about Chromium ?
by topguy
Mon Jul 08, 2019 12:08 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 23
Views: 1212

Re: Anyone cross compiled QT for the Pi 4 yet.

Do you really need newer Qt5 thant 5.11 that is in Buster ? shouldnt QML run quite well with opengl as backend and not necessarily need eglfs ?

(I havent got a Pi4 yet so havent had time to experiment myself )
by topguy
Mon Jul 08, 2019 12:04 am
Forum: General discussion
Topic: Transition from omxpayer to vlc
Replies: 7
Views: 739

Re: Transition from omxpayer to vlc

The Mplayer fork "mpv" is a pretty good player for console. You might have to play around with the "-vo" options to find the one that works best on a Pi4.

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