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by BespokeTech
Wed Jul 17, 2019 9:57 am
Forum: Beginners
Topic: GPS LAN TRACKING
Replies: 8
Views: 608

Re: GPS LAN TRACKING

Thank you for the responses Right now I'm using cellphones and the TRACCAR server. It works okay for orienting devices in close proximity but without internet there's no map, just a white screen with dots representing user cellphones. I'm very open to the usage of other devices instead, and other p...
by BespokeTech
Mon Jul 15, 2019 10:30 pm
Forum: Advanced users
Topic: Need help recovering data from RAID array.
Replies: 4
Views: 332

Re: Need help recovering data from RAID array.

I recommend that you try R-Studio, it’s commercial software but I think they have a trial available. It specifically supports raid recovery on multiple file system types. The full version is pretty cheap as well.

https://www.r-studio.com/
by BespokeTech
Sat Jul 13, 2019 11:53 pm
Forum: Beginners
Topic: After soldering a pin header, can't flash LED anymore
Replies: 6
Views: 333

Re: After soldering a pin header, can't flash LED anymore

Sorry to say but those soldered joints are very poor. The solder clearly hasn't flowed from the pin to the pad on the PCB. When soldering you need to ensure both the pad and the pin are sufficiently heated before applying solder to the joint. I would recommend getting hold of some Veroboard if you c...
by BespokeTech
Sat Jul 13, 2019 3:18 pm
Forum: Advanced users
Topic: Script for creating RPI images (similar to pi-gen)
Replies: 0
Views: 312

Script for creating RPI images (similar to pi-gen)

Hi All, Using ideas from pi-gen and the Hypriot project, I have composed some scripts to enable the building of a working Raspberry Pi Image. You can change settings such as the OS variant you want to build within the build_sysroot.sh file. To modify what packages are installed edit the chroot-scrip...
by BespokeTech
Sat Jul 13, 2019 2:36 pm
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

I have tidied it up, just running it to make sure I haven't knackered it then I will post a link.
by BespokeTech
Sat Jul 13, 2019 8:45 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

Kilograham, Due to a bug, debootstrap doesn’t build a buster sysroot without using a 32bit host. You will get strange issues such as SSL problems like you are having. To fix the problem either use a 32bit host, or do what I do and that is to use docker in a 64bit environment but with an i386 image....
by BespokeTech
Fri Jul 12, 2019 8:29 pm
Forum: Beginners
Topic: about cpu usage rate and hard disk usage rate after set Raid 1
Replies: 2
Views: 161

Re: about cpu usage rate and hard disk usage rate after set Raid 1

I would fully expect dismal performance. The usb ports and ethernet are all connected to a single controller on the SOC, you only have 1gb of ram and using software raid. I may be wrong because I have never tried, but I would think your idea is a non starter, well with any kind of acceptable perform...
by BespokeTech
Fri Jul 12, 2019 7:37 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

Kilograham,

Due to a bug, debootstrap doesn’t build a buster sysroot without using a 32bit host. You will get strange issues such as SSL problems like you are having.

To fix the problem either use a 32bit host, or do what I do and that is to use docker in a 64bit environment but with an i386 image.
by BespokeTech
Wed Jul 10, 2019 1:16 pm
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

I have now done some testing as per anszom's guidance and can report as follows.... 1. With fake KMS enabled, launching qmlscene comes up with the following error... * failed to add service - already in use? This message comes out from broadcom OpenGL libraries. For some reason you seem to still be...
by BespokeTech
Tue Jul 09, 2019 8:52 pm
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

I have now done some testing as per anszom's guidance and can report as follows.... 1. With fake KMS enabled, launching qmlscene comes up with the following error... * failed to add service - already in use? 2. Disabling vc4-fkms-v3d results in Could not open DRM device /dev/dri/card1 (No such file ...
by BespokeTech
Tue Jul 09, 2019 1:46 pm
Forum: Advanced users
Topic: can a RPi be used to control a concentrator unit ?
Replies: 2
Views: 201

Re: can a RPi be used to control a concentrator unit ?

It certainly has more than enough "control" but in terms of driving motors and interfacing with sensors, I personally would use a Motor Hat which is specifically designed for the job.

Something like this one...

https://www.adafruit.com/product/2348
by BespokeTech
Tue Jul 09, 2019 11:47 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

1. Install these dependencies into your raspberry pi sysroot: libegl1-mesa-dev libgbm-dev libgles2-mesa-dev mesa-common-dev . Not all of these may be strictly required, but this is what worked for me. The simplest way is to do it on a Raspberry Pi and then download the card image back to your PC. I...
by BespokeTech
Tue Jul 09, 2019 11:38 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

I've managed to get it to work yesterday. I've used qt 5.9 for various historical reasons, but this should apply to later versions as well. Building: 1. Install these dependencies into your raspberry pi sysroot: libegl1-mesa-dev libgbm-dev libgles2-mesa-dev mesa-common-dev . Not all of these may be...
by BespokeTech
Tue Jul 09, 2019 11:34 am
Forum: Advanced users
Topic: builing an installable kernel deb
Replies: 1
Views: 109

Re: builing an installable kernel deb

Not quite sure what you are trying to do, but in terms of building the kernel and the packaging it into a deb file, I suggest you take a look at the Hypriot project on github, in particular there kernel building scripts which spit out a deb file as the end result. https://github.com/hypriot/rpi-kern...
by BespokeTech
Tue Jul 09, 2019 7:51 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

Just attempting the build now EGLFS GBM passed the tests on the build config using the vc4 mkspec... QPA backends: DirectFB ............................... no EGLFS .................................. yes EGLFS details: EGLFS OpenWFD ........................ no EGLFS i.Mx6 .......................... ...
by BespokeTech
Tue Jul 09, 2019 7:20 am
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

The Broadcom EGL implementation does not work on Pi 4 due to it being a different GPU. This is why Qt's brcm-eglfs platform integration does not work. Try using the mkspec for eglfs-bgm, it might work with fake KMS mode that Pi 4 uses. There is already a mkspec for it: https://code.qt.io/cgit/qt/qt...
by BespokeTech
Mon Jul 08, 2019 9:23 pm
Forum: Beginners
Topic: GPS LAN TRACKING
Replies: 8
Views: 608

Re: GPS LAN TRACKING

So, are the devices you want to track the location of all the same? or are you trying to track multiple types of devices?

Obviously what ever device is being tracked is going to need software to send it's location co-ordinates back to the server/pi.
by BespokeTech
Mon Jul 08, 2019 9:05 pm
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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

This evening I have tried my newly built image (buster) on my trusty Pi 3b+ and it works just fine. So I think I can rule out the buster side of things. In order to get it working on the Pi 3b+ I have always needed to preload the libraries which I do with.... LD_PRELOAD="/opt/vc/lib/libbrcmEGL.so /o...
by BespokeTech
Mon Jul 08, 2019 3:26 pm
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

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 ) I haven’t actually tried that yet. Historically using the version that comes with the OS ...
by BespokeTech
Sun Jul 07, 2019 8:06 pm
Forum: Advanced users
Topic: Anyone cross compiled QT for the Pi 4 yet.
Replies: 24
Views: 1658

Anyone cross compiled QT for the Pi 4 yet.

Hi All, Has anyone managed to cross compile QT for the Pi 4 yet? I am trying using my usual recipes but at the moment it is hanging the Pi whenever I launch things like qmlscene (I am using EGLFS). I suspect it's to do with the VC drivers, I can never seem to get my head around the VC side of things.
by BespokeTech
Sat Jul 06, 2019 5:41 pm
Forum: General discussion
Topic: VM to SD Card restore
Replies: 2
Views: 153

Re: VM to SD Card restore

I use chroot to make changes on my PC and can then convert it into an image which works on the Pi. Suggest you take a look at pi-gen which is the official tool used to produce the images for the Pi. It also uses chroot to make changes to the filesystem. It may be overkill for what you want but it sh...
by BespokeTech
Tue Jul 02, 2019 8:09 pm
Forum: General discussion
Topic: OKdo - Anyone else not received delivery yet?
Replies: 52
Views: 3575

Re: OKdo - Anyone else not received delivery yet?

As I posted earlier, mine did actually arrive today so all is happy in the end. And in fairness as others have commented they did eventually reach out to me. I understand product launches can swamp even the best re-sellers to the point that things start going wrong. And I appreciate they cannot answ...
by BespokeTech
Tue Jul 02, 2019 7:53 pm
Forum: General discussion
Topic: Just received my RPi4b/4GB - no HDMI output!!!
Replies: 75
Views: 6669

Re: Just received my RPi4b/4GB - no HDMI output!!!

All the equipment is official Raspberry Pi, the PSU & mHDMI cables. Plus a fresh installation of Buster 2 days ago, which worked in my RPi3B+. Rebooted with the cable in the other socket, & got the expected blank. Rebooted, mHDMI cable back in HDMI0, & now I get 640x480, 4 raspberries, the logo, & ...

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