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by laurent
Thu Feb 27, 2020 1:32 pm
Forum: Graphics, sound and multimedia
Topic: Raspberry Pi 4 as live transcoder and streamer feasibility
Replies: 2
Views: 349

Re: Raspberry Pi 4 as live transcoder and streamer feasibility

I'm assuming your phones and tablets don't have gigabit ethernet. Transcoding has two factors, CPU/GPU usage and bandwidth, if you need to create a 3Mb/s encoding you need much more computing power than if you create a 15Mb/s encoding. Plex Media Server usually has good transcoding options but does...
by laurent
Thu Feb 27, 2020 12:39 pm
Forum: Graphics, sound and multimedia
Topic: Raspberry Pi 4 as live transcoder and streamer feasibility
Replies: 2
Views: 349

Raspberry Pi 4 as live transcoder and streamer feasibility

Hi everyone, I have a particular configuration at home and I would like to get some advice to know if my project could be done. Here is my configuration : I have a NAS hosting some movies in 4K/HEVC, few computers, tablets, phones and a 4K TV, linked altogether by a Gigabit network. The problem : on...
by laurent
Mon Feb 24, 2020 9:02 pm
Forum: General discussion
Topic: Wide angle camera module picture quality questionable.
Replies: 8
Views: 325

Re: Wide angle camera module picture quality questionable.

It is possible to buy an M12 plastic lens housing that can be mounted over the top of the IMX219, although remove the existing lens from the sensor first. Not perfect for a production run, but useful for the hobbyist. Thanks for this info. I already saw 3D printable models but never interested abou...
by laurent
Mon Feb 24, 2020 8:53 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 52985

Re: New Pi 4B v1.2?

@chwe As far as I know, the foundation always said there was an issue with USB-C. As I saw it, they just tried to keep the importance of this problem at a realistic level, in opposite of clickbait sites and rumors, which raised this issue at an insane level. The other thing is the osbourne effect. W...
by laurent
Mon Feb 24, 2020 3:34 pm
Forum: General discussion
Topic: Wide angle camera module picture quality questionable.
Replies: 8
Views: 325

Re: Wide angle camera module picture quality questionable.

Hi. I am doing a timelapse project where I take one picture daily and I bought this https://www.ebay.co.uk/itm/For-Raspberry-Pi-3-4-Wide-Angle-130-Degree-1080P-5M-Pixel-Camera-Module-UK/223778329929?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 camera module. The thing is that the colo...
by laurent
Sat Feb 15, 2020 10:14 pm
Forum: General discussion
Topic: Pi 4 - What kind of displays can be connected to J4
Replies: 6
Views: 344

Re: Pi 4 - What kind of displays can be connected to J4

Other DSI panels can be added if you have the required knowledge - https://github.com/anholt/linux/wiki/Raspberry-Pi-and-other-MIPI-DSI-display-panels Out of curiosity, what is the maximum definition the DSI port of our Pi can handle ? Definition? Do you mean pixel clock? DSI1 on the Compute Module...
by laurent
Fri Feb 14, 2020 3:00 pm
Forum: General discussion
Topic: Pi 4 - What kind of displays can be connected to J4
Replies: 6
Views: 344

Re: Pi 4 - What kind of displays can be connected to J4

6by9 wrote:
Fri Feb 14, 2020 1:29 pm
Other DSI panels can be added if you have the required knowledge - https://github.com/anholt/linux/wiki/Ra ... lay-panels
Out of curiosity, what is the maximum definition the DSI port of our Pi can handle ?
by laurent
Thu Feb 06, 2020 9:03 am
Forum: General discussion
Topic: Raspberry Pi Zero - Version 2?
Replies: 70
Views: 3746

Re: Raspberry Pi Zero - Version 2?

The Raspberry Pi Zero is a fantastic little board - ultra compact etc... but it is very low on the CPU & RAM side. Any plans for an update to mach say the 4B? No. Not possible at the Pi Zero price point, or anywhere remotely near it (not to mention, the form factor). It *might* be sort of possible ...
by laurent
Fri Jan 24, 2020 10:46 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 52985

Re: New Pi 4B v1.2?

@laurent, Official announcements are great for traceability of your products life cycle. In my company, we use many Raspberry Pis on internal products. I think if you want an SBC with a rigorous and unchanging specification and/or months and years of advance warning of changes an/or long term suppl...
by laurent
Fri Jan 24, 2020 11:13 am
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 52985

Re: New Pi 4B v1.2?

Is there an official announcement about the new revision yet? If anyone has it can you please post some online shops that have it? We have never made any official announcements about board revision changes. Knowing which shops may have a particular revision is not possible from our end. The foundat...
by laurent
Fri Jan 17, 2020 12:26 pm
Forum: General discussion
Topic: Future of raspberry pi - software related
Replies: 382
Views: 29229

Re: Future of raspberry pi - software related

(A part of) The future of Raspberry Pi finally came to us today : Igalia just announced that the Pi 4 is now an official OpenGL ES 3.1 conformant product !
https://blogs.igalia.com/itoral/2020/01 ... nformance/

Nice work guys ;)
by laurent
Tue Jan 14, 2020 3:35 pm
Forum: General discussion
Topic: Future of raspberry pi - software related
Replies: 382
Views: 29229

Re: Future of raspberry pi - software related

I'm surprised that no one mentioned mainline Linux support for our favourite SBC. It has been mentioned many times that they are hardly working on it on Pi tower, but it would be a great achievement for the future. For my point of view, the biggest software improvement on the Pi 4 is the Anholt/Igal...
by laurent
Mon Jan 13, 2020 1:43 pm
Forum: Advanced users
Topic: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?
Replies: 49
Views: 2555

Re: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?

I remember also to stick a label with the MPEG2 licence numbers directly on early Pi models when I bought those licences in the past. You only need to load the key once. It permanently sets an OTP bit to indicate that you've paid for a license. Thanks for this information. I required this only for ...
by laurent
Mon Jan 13, 2020 1:10 pm
Forum: Advanced users
Topic: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?
Replies: 49
Views: 2555

Re: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?

Hi, Those different Pi variants are enclosed on different boxes before shipping (mentioning the memory model). Can't you just put a sticker about the memory size inside the box ? So the customer should just have the choice to stick or not this piece of paper about memory capacity, after unboxing th...
by laurent
Mon Jan 13, 2020 10:45 am
Forum: Advanced users
Topic: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?
Replies: 49
Views: 2555

Re: How to Differentiate RPI4 - 1 vs. 2 vs. 4 GB ?

Hi, Those different Pi variants are enclosed on different boxes before shipping (mentioning the memory model). Can't you just put a sticker about the memory size inside the box ? So the customer should just have the choice to stick or not this piece of paper about memory capacity, after unboxing the...
by laurent
Sat Dec 21, 2019 10:30 pm
Forum: Graphics, sound and multimedia
Topic: What's happened with Pi Zero sized cheap DACs ? (RIP Pimoroni pHAT DAC)
Replies: 1
Views: 383

What's happened with Pi Zero sized cheap DACs ? (RIP Pimoroni pHAT DAC)

Hi everyone, I'm so sad to see that the Pimoroni pHAT DAC is tagged as "discontinued" :cry: Pimoroni advises customers to deal with the brand new Pirate Audio range, with a beautiful screen and control buttons for the replacement board, but with a lower quality DAC, for a higher price (PCM5100A vs P...
by laurent
Wed Dec 18, 2019 4:11 pm
Forum: Advanced users
Topic: Disable 10ms interrupt on core 2&3
Replies: 3
Views: 882

Re: Disable 10ms interrupt on core 2&3

Hi, A Pi was never intended to do hard real-time tasks. This is a major difference between microcontrollers (particularly os-less ones) and any SBC running a conventional Linux. Those last ARE computers (hence their name). They are able to manage huge CPU and memory hungry tasks and services, which ...
by laurent
Thu Dec 12, 2019 9:58 pm
Forum: Français
Topic: Pi 3 ou 4 ?
Replies: 3
Views: 345

Re: Pi 3 ou 4 ?

Bonjour je souhaite acquérir un raspberry Pi pour Noël mais je ne sais pas lequel choisir. Je voudrais principalement en faire un serveur de fichiers + sûrement quelques projets annexes (rien de très gros). Je me demandais s'il était judicieux d'acheter le Pi 4 b maintenant sans attendre sa version...
by laurent
Tue Dec 10, 2019 9:38 am
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 52985

Re: New Pi 4B v1.2?

Is the usb specification violation finally fixed in 1.2? The foundation should have made an exception for the mess they created and announce the changes in the new revision right away. What mess? Are you talking about the massively overblown click bait articles about the USB C power problem? Its a ...
by laurent
Wed Nov 27, 2019 1:52 pm
Forum: Advanced users
Topic: DVFS Firmware
Replies: 85
Views: 12322

Re: DVFS Firmware

Nice update, also working well for me on my Pi41G idling on my desk at work.
With the Pi enclosed on the official case, I won 4°C.
by laurent
Thu Nov 14, 2019 2:21 pm
Forum: Gaming
Topic: How to run Freespace 2 Open on Raspberry PI 3
Replies: 25
Views: 6496

Re: How to run Freespace 2 Open on Raspberry PI 3

Many thanks for your tests with the Pi 4, under Raspbian Buster. Unfortunately, the Pi 4 is unlikely to support more than OpenGL 2.1 :cry: At least, according to, what Igalia said: At present, the V3D driver exposes OpenGL ES 3.0 and OpenGL 2.1. As I mentioned above, the VideoCore VI GPU can do Open...
by laurent
Wed Nov 13, 2019 9:51 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 52985

Re: New Pi 4B v1.2?

This revision may been planned before the USB-C "issue" discovery, and address some/many other minor points that doesn't need any staff explanations. If this revision really exists, and doesn't correct the USB-C "issue", a further one will do.
by laurent
Tue Nov 12, 2019 9:28 pm
Forum: Advanced users
Topic: Running Qt in raspberry pi 3 (rpi3) vs raspberry pi 4 (rpi4)
Replies: 2
Views: 558

Re: Running Qt in raspberry pi 3 (rpi3) vs raspberry pi 4 (rpi4)

Hello, 3D acceleration with OpenGL ES through the legacy proprietary driver is no more supported on the Raspberry Pi 4. In order to enable the 3D acceleration, the v3d driver is mandatory. This is why it's enabled by default in the config.txt. I also managed to compile Qt with eglfs acceleration in ...
by laurent
Thu Nov 07, 2019 11:51 am
Forum: General discussion
Topic: Interesting interview with Eben in Physics World
Replies: 41
Views: 3316

Re: Interesting interview with Eben in Physics World

SD card may fail for some reasons, but solutions or workarounds exists: - Mecanical: could be glued (could be applied to camera connectors also) - FS corruption: Read only rootfs on a good quality UHS I SD card - Unexpected power loss: UPS HAT or powerbanks If you just install a regular Raspbian on ...
by laurent
Wed Nov 06, 2019 4:37 pm
Forum: General discussion
Topic: Interesting interview with Eben in Physics World
Replies: 41
Views: 3316

Re: Interesting interview with Eben in Physics World

Heater wrote:
Wed Nov 06, 2019 3:28 pm
Wow, that was a close shave.

A Pi without GPIO would have been like a car without wheels. Disaster.
I don't think those who encloses their Pi in a FLIRC case heavily uses their GPIO :mrgreen:

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