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Raspberry Pi 4

raspberrypi.org

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Re: Raspberry Pi 4

#671

Post by KingFelix »

fpgaminer wrote: post #546
elliotpage wrote: post #185

Can't wait to buy this, boot it up, play with it for four hours, then stick it in the same desk drawer with the other Pis I have bought over the years. (The upgrades look great, just my attention span is not so great)

That's silly. RasPis are stupidly useful. I've got: * A Zero W hooked up to a PM2.5 to do air quality monitoring in the house. Just bought a couple more sensors for it (VOC, eCO2, etc), but haven't hooked them up yet. * A 3B+ running the UniFi controller for my home network. * One is running a custom Hue automation I built to shift the color temperature of the lights throughout the day. * One is built into an interne…

That is awesome, it took me awhile to start using mine. I just put together a pi hole, plex server on Rockpro64 and I just bought a tinker board from Frys for $50. Runs a bit hot though

What software are you running? I have been using Dietpi for almost all my projects. Plex comes native( as an option to install) and a bunch of other software.

Re: Raspberry Pi 4

#672

Post by dheera »

anchpop wrote: post #667
dheera wrote: post #658

Earlier quoted context omitted.

Excited too, but $55 + $13.95 shipping = $68.95 is inching closer to the $99 (free shipping) territory of the Jetson Nano.

Does it really compete with the Jetson Nano? I thought it was designed for AI stuff

Sure, if you're doing CPU-only tasks, Jetson Nano is A57 and Pi4 is A72 which is maybe twice as fast, but if you can offload anything to the GPU at all (media encoding, neural networks, matrix operations) you'll probably get some enormous gains in efficiency with the Nano.

Re: Raspberry Pi 4

#673

Post by zeta0134 »

mtw wrote: post #660
Mediterraneo10 wrote: post #12

The addition of gigabit ethernet and USB 3.0 means that a Pi no longer feels like a bottleneck in one’s home network. I know that the Pi was invented as an educational product, but thanks to the Linux distribution OSMC it is commonly used as a media center for playing films, music, TV, etc. I have had gigabit internet for a few years now, and every day on average, I torrent a Blu-Ray image onto my main computer. Howe…

> Raspberry Pi 3 media center Just read theverge review on how the Pi struggles to play a video full screen, even if resolution is 480p. How are then people using it as a media center?

I've never had these problems with the various media center apps. My Pi 3B+ has been running Kodi for a few months now, and it happily plays 1080p videos at what appears to be smooth 60 FPS.

Mind, this is specifically running under Kodi, which is optimized as a media center, and is NOT running also a full desktop environment. Attmepting to do the same in, say, the stripped down Chromium browser was an exercise in frustration. That's always been a major limitation of the 3D acceleration in the Pi, as the libraries took a long while to mature and were always a bit hacky.

The announcement for proper OpenGL support and compositing in the desktop environment is huge for me. It seems like it'll finally push the Pi up into "workshop computer" territory that, while underpowered, should be just capable enough to run some of my always on operations and act as a lightweight CAD station for small parts. I ordered one as soon as I woke up and saw the announcement, and we'll see how well that works in practice.

Re: Raspberry Pi 4

#674

Post by mrob »

gambiting wrote: post #478
AnIdiotOnTheNet wrote: post #428

Earlier quoted context omitted.

Forgive me, but isn't 20ms kind of a lot of latency? That's more than a frame at 60hz. I assume I'm missing some context here.

In audio that's still acceptable. In our games we usually run at either 40ms or 60ms audio frame size(which means you are getting at least that much latency before hearing the sound for your action).

>In audio that's still acceptable.

Here's a presentation by somebody who disagrees:

https://archive.org/details/GDC2013Pavaheau

Re: Raspberry Pi 4

#675

Post by StillBored »

dheera wrote: post #672
anchpop wrote: post #667

Earlier quoted context omitted.

Does it really compete with the Jetson Nano? I thought it was designed for AI stuff

Sure, if you're doing CPU-only tasks, Jetson Nano is A57 and Pi4 is A72 which is maybe twice as fast, but if you can offload anything to the GPU at all (media encoding, neural networks, matrix operations) you'll probably get some enormous gains in efficiency with the Nano.

OTOH, your going to be pretty much stuck with whatever handouts nvidia gives you unless your willing to hack the firmware/etc and reverse engineer stuff.

Pretty much everything works on the existing rpi. Heck you can run Windows IoT on it. It has a UEFI firmware (edk2) port which mostly complete, and pretty much every distro and 3rd party OS supports it. And the hardware itself is mostly open at this point.

Re: Raspberry Pi 4

#676

Post by marcosscriven »

KingFelix wrote: post #662
xorcist wrote: post #302

Earlier quoted context omitted.

> I've been using the RPI2 as my HTPC/NAS Using the Pi as a file server can be a bit flaky. The ethernet controller was an USB one, and was neither really stable or took load very well. The new PHY on a dedicated link is probably the single biggest improvement with this new revision. The HEVC is a bit unexpected considering the high license fees and general uncertainties. Let's hope the documentation can be released…

are you speaking about the pi 4 or 2? I just setup my RockPro64 with 4GB, also PCIex4, have an SSD, going to setup a raid at somepoint when I get it all figured out. The board was a bit more expensive than the pi4, but I am interested in playing around with it. But it looks like its back ordered for awhile

I did not get that board stable at all I’m afraid. Lots of issues with USB drives.

https://github.com/ayufan-rock64/linux-build/issues/112

Re: Raspberry Pi 4

#677

Post by jamesgeck0 »

driverdan wrote: post #521
jimpudar wrote: post #454

I'm so happy they haven't removed the composite video out in the headphone jack! If you didn't know, you just need a 3.5 mm TRRS connector - the pinout[0] looks like: T - Left Channel Audio R - Right Channel Audio R - Ground S - Composite Video Out [0] https://www.raspberrypi-spy.co.uk/2014/07/raspberry-pi-model...

Why? What do you use composite video for? I think the last time I used composite video for anything was 10+ years ago.

IIRC, if you're building a handheld gaming device on the RPi Zero, your two choices for driving a small display are composite output or the SPI interface. The SPI interface has lower bandwidth, so some people use composite to eliminate tearing.

The SPI driver readme has a lot of details about its limitations and tradeoffs. https://github.com/juj/fbcp-ili9341

Re: Raspberry Pi 4

#678

Post by inson »

cyberjunkie wrote: post #3

Oh my! This is such a crazy upgrade. I've been using the RPI2 as my HTPC/NAS at my folks, and I'm so happy with it. I was itching to get the last one for myself. USB 3.0! Gigabit Ethernet! WiFi 802.11ac, BT 5.0, 4GB RAM! 4K! $55 at most?! What the!? How the??! I know I'm not maintaining decorum at Hacker News, but I am SO mighty, MIGHTY excited! I'm setting up a VPN to hook this (when I get it) to my VPS and then do…

Do you have a blog or something for us, mortals, to learn

Re: Raspberry Pi 4

#679

Post by squarefoot »

mtw wrote: post #660
Mediterraneo10 wrote: post #12

The addition of gigabit ethernet and USB 3.0 means that a Pi no longer feels like a bottleneck in one’s home network. I know that the Pi was invented as an educational product, but thanks to the Linux distribution OSMC it is commonly used as a media center for playing films, music, TV, etc. I have had gigabit internet for a few years now, and every day on average, I torrent a Blu-Ray image onto my main computer. Howe…

> Raspberry Pi 3 media center Just read theverge review on how the Pi struggles to play a video full screen, even if resolution is 480p. How are then people using it as a media center?

What review did you read? Playing video is likely the only thing the PI 3 does really well; even most H265 FHD do play without stuttering on the 3+ although we're close to the board limits.

Are you sure the writer didn't use the board the wrong way? Some people still believe that videos should be streamed after being transcoded because that is the only way to watch them on their ridiculously limited smart TV which lacks the necessary codecs to watch them the right way. Of course doing this over WiFi would make the problem even worse. To optimize network usage, videos should be kept encoded until they reach the player so that the network won't be clogged. If you use the PI to read the movie as a file over a shared SMB or NFS directory, the network usage is so low that you could watch like 20 different movies on 20 different players on the same home network at the same time. Probably even more.

The PI 3 (and to some extent probably the PI4 too) is still behind many other boards in other contexts (openness, performance, price) but playing video is surely not one of them.

Re: Raspberry Pi 4

#680

Post by dvdbloc »

dheera wrote: post #658
cyberjunkie wrote: post #3

Oh my! This is such a crazy upgrade. I've been using the RPI2 as my HTPC/NAS at my folks, and I'm so happy with it. I was itching to get the last one for myself. USB 3.0! Gigabit Ethernet! WiFi 802.11ac, BT 5.0, 4GB RAM! 4K! $55 at most?! What the!? How the??! I know I'm not maintaining decorum at Hacker News, but I am SO mighty, MIGHTY excited! I'm setting up a VPN to hook this (when I get it) to my VPS and then do…

Excited too, but $55 + $13.95 shipping = $68.95 is inching closer to the $99 (free shipping) territory of the Jetson Nano.

Where do you get a jetson nano with free shipping?
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