Raspberry Pi Forums

BespokeTech

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...

BespokeTech

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/

BespokeTech

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...

BespokeTech

Now posted

https://www.raspberrypi.org/forums/view ... 5#p1499185

BespokeTech

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...

BespokeTech

I have tidied it up, just running it to make sure I haven't knackered it then I will post a link.

BespokeTech

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....

BespokeTech

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...

BespokeTech

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.

BespokeTech

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...

BespokeTech

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 ...

BespokeTech

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

BespokeTech

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...

BespokeTech

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...

BespokeTech

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...

BespokeTech

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 .......................... ...

BespokeTech

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...

BespokeTech

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.

BespokeTech

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...

BespokeTech

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 ...

BespokeTech

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.

BespokeTech

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...

BespokeTech

A system called Docker will solve that problem for you.....

https://www.electromaker.io/tutorial/bl ... spberry-pi
https://vicpimakers.ca/tutorials/raspbi ... -webserver
https://github.com/kkdai/docker-rpi-php

BespokeTech

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...

BespokeTech

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, & ...

Search found 71 matches

Re: GPS LAN TRACKING

Re: Need help recovering data from RAID array.

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

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

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

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

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

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

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

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

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

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

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

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

Re: builing an installable kernel deb

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

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

Re: GPS LAN TRACKING

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

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

Anyone cross compiled QT for the Pi 4 yet.

Re: VM to SD Card restore

Re: Need a LAMP server running PHP5.6 on a Pi 4

Re: OKdo - Anyone else not received delivery yet?

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