Raspberry Pi 4 • Hacker News Board

Re: Raspberry Pi 4

#471

Post by OJFord » Mon, Jun 24, 2019, 2:10 PM UTC

Symbiote wrote: post #351

patentatt wrote: post #206

Earlier quoted context omitted.

I think the gp’s point is that to a lot of entities (employees, suppliers) there is little difference between for profit and non profit. And if your nonprofit is passing profit along to a for profit ... you can see how the lines blur. Maybe a way to interpret the above comment is that the incentive structure for many people involved is not significantly impacted by the nonprofit status. And non profits can have money…

The Raspberry Pi Foundation is a charity registered in England and Wales. "The object of the charity is to further the advancement of education of adults and children, particularly in the field of Computers, Computer Science and related subjects." They have a trading subsidiary. Anyone sufficiently cynical (not me) can read the accounts of both entities: - https://beta.charitycommission.gov.uk/charity-details?regid=.…

And that's a binding object - charities' trustees are legally accountable to ensuring the charity acts to fulfill its stated aims.

Re: Raspberry Pi 4

#472

Post by NikkiA » Mon, Jun 24, 2019, 2:11 PM UTC

StudentStuff wrote: post #93

Medox wrote: post #46

Depending on the purpose, for example if somebody just wants a compact home cloud, the Odroid HC2 could also - still - be considered: https://www.hardkernel.com/shop/odroid-hc2-home-cloud-two/ - Half the RAM but double the cores. I'm waiting for some benchmarks to see if the RPi4 is faster and by how much. - Also Gigabit Ethernet and it works great. My downloads are always at 108-111MB/s for the whole transfer. - Not…

The OrangePi 3 at $40 is also pretty neat, PCIe 1x, 8GB onboard eMMC, 4x USB 3.0, Bluetooth 5, Wireless AC (pretty sure they beat Raspberry Pi to the punch on this...) and it has mainline kernel support: http://www.orangepi.org/Orange%20Pi%203/

The one downside to OrangePi systems is that they use a (semi-) non-standard DC connector (1.8mm I think, definitely not 2.1mm or 2.5mm though).

Re: Raspberry Pi 4

#473

Post by hrangozz » Mon, Jun 24, 2019, 2:12 PM UTC

How do you think this would perform under transcoding workloads, like those of home theater software like plex or emby?

Re: Raspberry Pi 4

#474

Post by xd1936 » Mon, Jun 24, 2019, 2:12 PM UTC

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...

Woah, I had no idea about this. This is great! Do they sell an official adapter?

Re: Raspberry Pi 4

#475

Post by epmaybe » Mon, Jun 24, 2019, 2:12 PM UTC

AnIdiotOnTheNet wrote: post #436

intsunny wrote: post #61

The RPI4 w/ 4GB RAM is going to be a very welcomed upgrade in the emulation scene. N64, PS1, Dreamcast and PSP games will run so much smoother.

Does the 4 have a composite output, or is there a hat for it? My game room has a CRT and while I'd love to stick to original hardware, the price of getting it to read games from non-original media (which is getting harder and harder to come by) is pretty high. An RPi 4 could be reasonable alternative.

Yes, it's via the 3.5mm Jack.

Re: Raspberry Pi 4

#476

Post by throw0101a » Mon, Jun 24, 2019, 2:13 PM UTC

MisterTea wrote: post #404

throw0101a wrote: post #398

Earlier quoted context omitted.

> Gigabit Ethernet! Does it have PoE? Having to deal with one less cable would be nice. Especially given that the latest spec, IEEE 802.3bt from September 2018, now allows for up to 100W per port: * https://en.wikipedia.org/wiki/Power_over_Ethernet

There is an official PoE board that fits the pi 3+ which uses a 4 pin header by the ethernet jack to grab power. The pi 4 appears to have the same header. https://www.raspberrypi.org/products/poe-hat/

Seems kludge-y.

IMHO, if one is going to do one of these types of embedded systems, then PoE should really be part of the design process from the beginning.

They're using the Ethernet on the BCM2711, and Broadcom has sadly deemed PoE not needed I guess.

The PoE HAT had a bunch of issues:

* https://www.theregister.co.uk/2018/09/11/raspberry_pi_poe_ha...

Re: Raspberry Pi 4

#477

Post by epmaybe » Mon, Jun 24, 2019, 2:13 PM UTC

For the sbc folk - is there a board that runs on 5V like the raspberry Pi and has power data and video over usb type c? Most if not all boards I've found only support power or data, or require 12V.

Re: Raspberry Pi 4

#478

Post by gambiting » Mon, Jun 24, 2019, 2:14 PM UTC

AnIdiotOnTheNet wrote: post #428

shams93 wrote: post #97

I'm super excited as well. I figured out the secret sauce to get a low latency kernel build I was able to get down to 20ms latency but I'm excited to see if this can't get down to 10ms even though 20ms is acceptable low audio latency, already with only 1 gig of ram on a pi3 ardour is usable for multitrack recording, excited to see how this does with 4 gigs.

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).

Re: Raspberry Pi 4

#479

Post by IE6 » Mon, Jun 24, 2019, 2:16 PM UTC

franky47 wrote: post #189

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)

I can relate. However these days I have found a new life for those abandoned Pis: I install Pi-Hole [1] on them and set them up for family and close friends. [1] https://pi-hole.net/

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.

Re: Raspberry Pi 4

#480

Post by swebs » Mon, Jun 24, 2019, 2:16 PM UTC

megous wrote: post #411

What's the thermal story? Looks pretty terrible so far. The case has no holes. The board has no holes for the heatsink, so you'll have to glue it. Space for heatsink is small. Is it made so that the board serves as a heatsink at the very least?

Scroll down to the "Power and Heat" section

https://www.tomshardware.com/reviews/raspberry-pi-4-b,6193.h...