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Raspberry Pi 4

raspberrypi.org

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Re: Raspberry Pi 4

#721
post #610

Earlier quoted context omitted.

Are you using web apps or presentation software for signage?

We use Screenly. It's rather basic and managed from a cloud account that can see the devices. There is no SSH or other "admin" access beyond the Web GUI that allows you to name/rename/remove and group screens based on their onsite locations for common signage. We've had issues with them and I'm looking for software to replace Screenly that will run on Raspbian or other Unix-like ARM OS.

I'm working on this. I have a solution about ready to launch and I have a question for you. What do you wish it had SSH to do ? I decided not to include it for security, what is not available in the web gui that you would find useful ?

Re: Raspberry Pi 4

#722

Earlier quoted context omitted.

Although PCs have traditionally had closed-source firmware, this firmware has not typically been used to implement malicious functionality (aside from cases such as the Thinkpad example above), making it historically less of a concern (though this is changing). Vendor lockin doesn't magically become acceptable because kids (nor is it ethical to teach kids that DRM is okay/normal). Also, define rpi clone - rpi did not…

> not typically been used to implement malicious functionality so raspberry pi, in an effort to be more open than say Dell/HP, where you had/have to pay to download drivers, bios and other updates, is _more_ malicious than say apple/google who are competing to create a closed garden with a remote lockout, where nothing is owned, only rented? ya. I really don't understand this viewpoint. Look, I've used embedded 386s.…

I don't own a smartphone/any Apple/Google products, or Dell/HP machines for that matter (not surprising to me that they're bad). My frame of reference is typical PCs, which aren't in the habit of applying vendor lockin with regards to what peripherals you can use - and other SBCs.

I don't understand the premise that not applying vendor lockin to a camera module would make SBCs unreasonably expensive. Competing SBCs are more open, many predate the rpi and despite the fact that they probably sell fewer units than the rpi (due to less brand exposure, not cloning), and thus possess lower economies of scale, I've never seen one which costs "£500".

>Don't get me started on DRM. Look I know you think that everything should be free, but that means I can't earn a living.

I think this is clearly untrue from the success of other, more open SBCs.

>Teaching kids that copy/pasting someone's work, making a halfarsed cheap copy and selling it for loads of profit, with no support is a good moral choice, you might want to re-asses your world view.

But I never claimed that kids should be taught that. What I do claim is that kids should not be taught that it's ethical or normal/acceptable to try and use malicious functionality to institute vendor lockin, creating an artificial monopoly in compatible peripherals, because it isn't.

Moreover, it appears this DRM has had a chilling effect on third-party cameras with novel functionality (i.e., not competing for the same applications as the official camera), according to a comment posted above: https://news.ycombinator.com/item?id=20261787 So there's real evidence of harm done by this.

>Yes, removing ownership from the people is exceptionally bad. The trend towards the "sharing" economy undermines workers rights to the point that we are entering digital feudalism. But that is another topic.

It isn't another topic. There is a systemic trend of hardware vendors using firmware to advance and prioritise their own interests over those of the device owner, essentially using technological measures to undermine the first sale doctrine. Of course, this isn't illegal, though it ought to be.

Re: Raspberry Pi 4

#723

Earlier quoted context omitted.

The assumption that they would prefer to handicap their main product because of some unknown deal they have on an accessory seems biased to me. The SoCs that they use are Broadcomm ones, a company known for being hostile to open source. Perhaps the fact that they have now sold over 25 million units of what is essentially their old designs that wheren't selling anymore is opening their eyes on the money that can be ma…

I agree that if rpi decides not to do camera DRM anymore, this motivation not to get rid of the boot blobs in the main product disappears. Currently they are defending this practice, however. It logically follows that as long as they institute this policy of using DRM on the main product to prevent use of third party camera modules, the boot blobs will remain...

I think people misunderstand what this DRM is about. The Pi has a special connector for a camera. Anyone can use this connector to build their own camera module and they can use the kernel driver that the RPi foundation paid for. But you also need to develop an App for it. The RPi foundation made their own camera accessory and an accompanying app for it. What the DRM does is that it only allows their own accessory to work with the app. So it's more like brand protection than it's market control. There are plenty of other cameras on the market that you can buy. Why they chose the camera to DRM out of all the peripherals I don't know, but the only reasonable place that they can stick it into is the blob that Broadcomm provided.

Btw the situation with the binary blob has been going for years and from what I've gathered in the past what's happening is that the foundation members signed an agreement to not reverse engineer anything on the SoC when they made the first Pi. Since then they offered a price for an open source gpu driver but didn't follow it up with more competions. So either Broadcomm shut them down or it paid off in internal pressure since Broadcomm paid and provided the mainline driver used in this version.

Re: Raspberry Pi 4

#724
Does anyone have a link for building a Raspberry Pi cluster over gigabit ethernet? A quick search turned up some stuff:

https://medium.com/@glmdev/building-a-raspberry-pi-cluster-7...

https://epcced.github.io/wee_archlet/

https://www.raspberrypi.org/magpi/cluster-computer-raspberry...

Specifically, I'd like to find software that makes the cluster appear as a single memory address space and N identical CPUs/cores.

When I'm in that OS/VM/kernel, whatever you want to call it, I want to be able to experiment with running stuff like Elixir or Go and have the runtime handle the virtual memory and cache coherency stuff between the nodes. I don't want to deal with any manual memory management at all. I just want rules of thumb regarding rough latency between N nodes and M routers for whatever network topology it uses.

Icing on the cake would be if I could run something like IPFS (or another hash tree) and have data distribution handled under the hood and appear as a single directory structure.

The goal being to play around with stuff like neural nets and ray tracing without having to use any proprietary frameworks. It should just appear as say a 256 core computer with however many GB or ram and however many TB of hard drive space I give it.

Re: Raspberry Pi 4

#725
post #83

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 good guide to setup a nice VPN server?

Another to check out is http://www.pivpn.io. Very easy to setup and use.

Re: Raspberry Pi 4

#726
post #431

Earlier quoted context omitted.

The same could be said about the VideoCore 4 blob which was used to boot the SoC. And yet they just did get rid of it.

I don't think they got rid of the blob, so much as moved it from the SD card to an onboard SPI flash more like you'd find on a typical PC. It's still there and even more required to boot the board than on previous Pis, but people distributing images no longer have to worry about the licensing and other headaches that were caused by having to include it.

There's a mainline driver that according to their own statements is now used for the gpu. Whether there's a firmware blob underneath it is a whole other story and as long as it's not something that has to be distributed with the OS I don't see how it should be treated any different than e.g. the AMD or intel gpus.

Re: Raspberry Pi 4

#727
post #390

Earlier quoted context omitted.

This seems like it could start replacing cheap firewall hardware. I believe pfsense no longer requires aes-ni (?), so it seems like a good choice for that.

AES-NI for x86 CPUs was going to be required for the next release of pfSense (2.5), but that requirement was dropped when the API that necessitated AES-NI was pushed back from the 2.5 release. AES-NI will probably still be a requirement at some point in the future. AES-NI won't be a requirement for ARM CPUs - Netgate sells first-party ARM-based pfSense appliances that have non-AES-NI hardware crypto acceleration that…

Yeah I'm actually using netgate boxes right now. I just figure rpis are cheaper. Thanks for the info.

Re: Raspberry Pi 4

#728

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.

I really love old CRT monitors. It's super nice to be able to hook up to them easily.

Re: Raspberry Pi 4

#729

Earlier quoted context omitted.

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…

So uh...what if I have no interest in home automation or possess a CNC or a 3D printer?

Then perhaps this would interest you: https://pi-hole.net/

You are posting here, so at least internet access you should have :)

EDIT: What about a magic mirror? https://forum.magicmirror.builders/

Re: Raspberry Pi 4

#730
post #479

Earlier quoted context omitted.

I wish pi-hole was just a tiny bit more polished. I found it takes a lot of work (and knowledge of linux networking) to get up and running properly and stable.

I've run into the same. It often would come back from a reboot without DNS restarted correctly. I never went through a Pi Hole update without having to manually fix things either. A few weeks ago I switched to Ad Guard Home. Has been rock solid since. The big dancehaus it doesn't support the exact same filter files.

I believe you can add your own filter files, so in this sense you could basically link the same ones right?
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