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by alnaseh
Mon Aug 12, 2019 11:45 am
Forum: Camera board
Topic: Fixed my zero w system lockups when using the camera
Replies: 20
Views: 6383

Re: Fixed my zero w system lockups when using the camera

I will share my experience as well, i have been facing all kinds of crashes using the camera and opencv. I tried alomost everything but the processor is just weak enough. On the other one thing helps a lot, reducing the priority of my processes. Yes not increasing but decreasing to the minimum using...
by alnaseh
Mon Aug 12, 2019 6:48 am
Forum: General discussion
Topic: Fastest real time face-detection on the RaspberryPi-4??
Replies: 7
Views: 476

Re: Fastest real time face-detection on the RaspberryPi-4??

From the code, it seems it is opencv api to detect the face
by alnaseh
Sun Aug 04, 2019 4:23 pm
Forum: Java
Topic: java is not supported any more on Pi0 with OS buster
Replies: 8
Views: 4025

Re: java is not supported any more on Pi0 with OS buster

problem is solved. OpenJDK 11 is available for Pi0 armv6 from zulu: https://www.azul.com/downloads/zulu-embedded/ it works out of the box. i need to test its performance against oracle jdk8, but initially it works. i tried as well adoptopenjdk without success. in addition, bell-sw.com has also a rel...
by alnaseh
Sun Jul 14, 2019 4:21 pm
Forum: Off topic discussion
Topic: cover options for Pi 3A+ case
Replies: 6
Views: 1351

Re: cover options for Pi 3A+ case

For both the RPi 3 series and RPi 4 series I would say just use a stand, that holds the board in a vertical orientation and only contacts at one edge, giving enough space between the board and bottom of the RPi and the bottom of the stand to allow for good air flow. It is easy to throw a design tog...
by alnaseh
Sat Jul 13, 2019 2:22 pm
Forum: Off topic discussion
Topic: cover options for Pi 3A+ case
Replies: 6
Views: 1351

Re: cover options for Pi 3A+ / Pi4 case

I'm raising my voice again here on this request, but now for Pi4. it makes sense to have a custom cover for the official case to support the camera out of the box with custom cable. Adding PoE hat inside the case (with suitable design for its fan) with the camera makes it more convenient as a home c...
by alnaseh
Wed Jun 26, 2019 3:42 pm
Forum: Raspbian
Topic: Buster bug report thread
Replies: 214
Views: 25211

Re: Buster bug report thread

OK, this is surprising, the OS team adopted the new java 11 in buster as the default java but it is not supported anymore in the old armv6 (pi0). this is like discontinuing java totally for Pi zero the topic is been discussed previously in: https://www.raspberrypi.org/forums/viewtopic.php?t=196887 ...
by alnaseh
Wed Jun 26, 2019 3:40 pm
Forum: Raspbian
Topic: Buster bug report thread
Replies: 214
Views: 25211

Re: Buster bug report thread

one change from stretch, iwconfig is not working anymore in rc.local without sudo + iwconfig wlan0 power off Error for wireless request "Set Power Management" (8B2C) : SET failed on device wlan0 ; Invalid argument. Edit: it is not working with sudo as well, it is working manually from the command l...
by alnaseh
Wed Jun 26, 2019 1:42 pm
Forum: Raspbian
Topic: STICKY: Raspbian 'Buster' 2019-06-20 / 07-10
Replies: 127
Views: 23553

Re: Raspbian 'Buster' 2019-06-20

one change from stretch, iwconfig is not working anymore in rc.local without sudo + iwconfig wlan0 power off Error for wireless request "Set Power Management" (8B2C) : SET failed on device wlan0 ; Invalid argument. Edit: it is not working with sudo as well, it is working manually from the command li...
by alnaseh
Wed Jun 26, 2019 6:40 am
Forum: Java
Topic: java is not supported any more on Pi0 with OS buster
Replies: 8
Views: 4025

Re: java is not supported any more on Pi0 with OS buster

also please find the installation error: update-alternatives: using /usr/lib/jvm/java-11-openjdk-armhf/bin/jmod to provide /usr/bin/jmod (jmod) in auto mode update-alternatives: using /usr/lib/jvm/java-11-openjdk-armhf/bin/jps to provide /usr/bin/jps (jps) in auto mode update-alternatives: using /us...
by alnaseh
Wed Jun 26, 2019 6:37 am
Forum: Java
Topic: java is not supported any more on Pi0 with OS buster
Replies: 8
Views: 4025

java is not supported any more on Pi0 with OS buster

OK, this is surprising, the OS team adopted the new java 11 in buster as the default java but it is not supported anymore in the old armv6 (pi0). this is like discontinuing java totally for Pi zero the topic is been discussed previously in: https://www.raspberrypi.org/forums/viewtopic.php?t=196887 h...
by alnaseh
Mon Jun 24, 2019 3:03 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 861
Views: 86866

Re: Raspberry Pi 4 Thread - general discussion

thank again,

Will the new bluetooth module support HFP/HSP profiles (mic), is it a software upgrade or has anything to do with the hardware module
by alnaseh
Mon Jun 24, 2019 10:59 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 861
Views: 86866

Re: Raspberry Pi 4 Thread - general discussion

great news. any improvement on the camera system. i see it is still supporting the old encoding rates and buses
by alnaseh
Thu May 16, 2019 4:29 pm
Forum: Camera board
Topic: how to save camera output in mp4 format
Replies: 0
Views: 189

how to save camera output in mp4 format

Hi, i have been trying to save the camera output with gstreamer in mp4 but facing difficulties. the following pipeline is not working pi@jr-5453cc:~ $ raspivid -n -t 0 -w 640 -h 480 -fps 8 -pf high -o - | gst-launch-1.0 -v fdsrc ! video/x-h264,width=640,height=480,framerate=8/1 ! h264parse ! splitmu...
by alnaseh
Tue Apr 30, 2019 4:06 am
Forum: Java
Topic: Why are Raspberry Pi still using Java 8 when Java 11 is available?
Replies: 26
Views: 18190

Re: Why are Raspberry Pi still using Java 8 when Java 11 is available?

Probably java 8 will remain the main jdk for quite long time. Pi0 is armv6 and java 8 is the last working version on this platform. I'll admit I haven't checked, but I'd be very surprised if openjdk 11 didn't work on a pi 0. we already killed this topic here: https://www.raspberrypi.org/forums/view...
by alnaseh
Sat Apr 27, 2019 9:59 am
Forum: Java
Topic: Why are Raspberry Pi still using Java 8 when Java 11 is available?
Replies: 26
Views: 18190

Re: Why are Raspberry Pi still using Java 8 when Java 11 is available?

Probably java 8 will remain the main jdk for quite long time. Pi0 is armv6 and java 8 is the last working version on this platform.
by alnaseh
Tue Feb 12, 2019 2:48 pm
Forum: Off topic discussion
Topic: cover options for Pi 3A+ case
Replies: 6
Views: 1351

cover options for Pi 3A+ case

Hi,

Pi 3A+ is very nice one and i hope if we can have a cover for the official case to fix the camera on it, in the same way the case for Pi zero. this will include a small cable as well
by alnaseh
Fri Jan 18, 2019 2:48 am
Forum: Camera board
Topic: 2 new options for raspivid
Replies: 12
Views: 1086

Re: 2 new options for raspivid

thank you all,

so --spstimings is good to have all the time.
for --slices, it helps in reducing the latency but with less compression efficiency. reducing the latency is good for me so i will start playing with it. i guess practical values should be within 1 - 5
by alnaseh
Thu Jan 17, 2019 5:38 pm
Forum: Camera board
Topic: 2 new options for raspivid
Replies: 12
Views: 1086

2 new options for raspivid

Hi, i have just updated the firmware "rpi-update" to the latest one and discovered 2 new options in raspivid -stm, --spstimings : Add in h.264 sps timings -sl, --slices : Horizontal slices per frame. Default 1 (off) i tried to understand their usage from the commits with no luck. https://github.com/...
by alnaseh
Sun Jul 22, 2018 6:23 pm
Forum: Troubleshooting
Topic: loosing wifi networks in wpa_supplicant.conf
Replies: 6
Views: 295

Re: loosing wifi networks in wpa_supplicant.conf

That's fine, but I would like to know if a newly created file also survives. That way you can rule out that it's a permanent problem with your SD card. the files on the home directly are created before loosing the config, they are my files and applications. loosing wpa_supplicant.conf is not happen...
by alnaseh
Sun Jul 22, 2018 5:38 pm
Forum: Troubleshooting
Topic: loosing wifi networks in wpa_supplicant.conf
Replies: 6
Views: 295

Re: loosing wifi networks in wpa_supplicant.conf

Create a file (name not important) in your hon directory. Then reboot and see if the file is still there. If the file has disappeared it's time to get a new SD card... If it's still there then carry on with the next troubleshooting step i have many files and applications in the home directory and i...
by alnaseh
Sun Jul 22, 2018 2:54 pm
Forum: Troubleshooting
Topic: loosing wifi networks in wpa_supplicant.conf
Replies: 6
Views: 295

loosing wifi networks in wpa_supplicant.conf

Hi, in many cases, after reboot i loose all the networks configured in the wpa_supplicant.conf. it happens a lot and it returns back to the default config. usually i upload the wpa_supplicant.conf in the boot partition and not configuring it from the OS as im using lite version. any hint on how to t...
by alnaseh
Tue Jul 03, 2018 4:34 pm
Forum: Beginners
Topic: Enable HFP/HSP for on-board bluetooth
Replies: 0
Views: 508

Enable HFP/HSP for on-board bluetooth

Hi, in the latest raspbian release, it was stated: - SCO profile suppot added via bthelper.service and the commit was: https://github.com/RPi-Distro/pi-bluetooth/commit/0dffacec9452b975ed7c17b530e4f230ea17b727 i would appreciate if someone can provide full example on how to use raspberry as mic and ...
by alnaseh
Sat Apr 28, 2018 12:50 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Bluetooth with HFP/HSP
Replies: 4
Views: 2967

Re: Bluetooth with HFP/HSP

For anyone interested, there is a solution to use the HSP profile with Raspberry Pi 3 ’s built in BCM43438 chip : https://github.com/raspberrypi/linux/issues/2229#issuecomment-359233111 I'm curious to know if the new chip CYW43455 (on 3B+) supports HSP profile out of the box or we will face the iss...
by alnaseh
Sat Apr 07, 2018 10:41 am
Forum: Automation, sensing and robotics
Topic: Long-Range RPI communication with mobile device
Replies: 16
Views: 1680

Re: Long-Range RPI communication with mobile device

I've been working on a project building a drone using a Pixhawk PX4 as a flight controller, and a rpi. I would like to be able to send from a mobile device to the pixhawk via the rpi new flightpath instructions. My issue is how to communicate between a mobile device e.g. an android smartphone and t...
by alnaseh
Thu Mar 29, 2018 2:32 pm
Forum: Other projects
Topic: Would a Raspberry Pi 3 B case be compatible with the Model B+
Replies: 8
Views: 12393

Re: Would a Raspberry Pi 3 B case be compatible with the Model B+

In the Blog it stated the Official Case is compatible: https://www.raspberrypi.org/products/raspberry-pi-3-case/ will it be compatible with the PoE hat as well ? if this is the case, i would recommend to have another cover that has a fan hole (and another one for the camera in the same style as for...

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