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New Raspberry Pi Model B+

raspberrypi.org

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Re: New Raspberry Pi Model B+

#191

Post by undersuit »

michaelt wrote: post #112
boris wrote: post #12

>We use a magjack that supports Power over Ethernet (PoE), and bring the relevant signals to a new 4-pin header. We will shortly launch a PoE HAT which can generate the 5V necessary to power the Raspberry Pi from the 48V PoE supply. This is nice though I personally wish they used the same Silvertel PoE module as Arduino which you just solder onto the board. Plus their PoE hat has a spinning fan.

Plus their PoE hat has a spinning fan. Looks like it's directly above the CPU - might just be to compensate for the worse airflow from the obstruction of the extra board?

From pictures it looks like the fan would definitely be needed. The hat is very low clearance to maintain compatibility with the official cases.

https://blog.hackster.io/the-new-raspberry-pi-poe-hat-823de8...

Re: New Raspberry Pi Model B+

#193

Post by Narishma »

xienze wrote: post #163
xienze wrote: post #120

Earlier quoted context omitted.

Disappointed that there still isn't a dedicated Ethernet controller. I would rather have that at 100Mbps than "gigabit" over USB.

Why the downvotes? It's a legitimate criticism. USB Ethernet is slower and consumes more CPU cycles.

But it is cheap and good enough for the foundation's goals.

Re: New Raspberry Pi Model B+

#194

Post by [deleted] »

r_singh wrote: post #56

I'm a big fan of the Raspberry Pi community in general and have used it for multiple applications over the years; most recently as a media center TV box. However, the hardware now feels old and I wish for more of an update from the Pi foundation. If anyone hear is looking for a true upgrade on the Pi, try the ODROID C2, it's years ahead of the Pi in terms of performance.

[deleted]

Re: New Raspberry Pi Model B+

#195

Post by blacksmith_tb »

izacus wrote: post #130
yipbub wrote: post #88

Earlier quoted context omitted.

That there are other OSes that do support it mean that it is a feature.

Which OSes are that? I couldn't find a single one.

There's also Pi64[1] which I have used and liked.

1: https://github.com/bamarni/pi64

Re: New Raspberry Pi Model B+

#196

Post by schappim »

schappim wrote: post #2

TL;DR: The Raspberry Pi 3 Model B+ is a nice update that provides, better networking with WiFi now 802.11.b/g/n/ac, Bluetooth 4.2/BLE and Gigabit Ethernet (although limited to 300Mbps). For Makers, the Raspberry Pi Foundation has made it easier to incorporate the RPi3B+ into end products keeping the RPi3B+ in production until at least January 2023 and providing "modular compliance certification" for the wireless modu…

I wonder why this is getting so many down votes?

Re: New Raspberry Pi Model B+

#197

Post by muxator »

digi_owl wrote: post #152
muxator wrote: post #7

> Here’s a long post. [...] If you don’t have time to read it all, we recommend you watch this video The video is 1 minute long. The article is ~84 lines, ~8 KB of text. Is that really long?

Never mind that with text it is quite easy to skip all the fluff and get to the info one wants (in this case, the specs and other differences between the 3B and the 3Bplus).

Exactly!

One of the basic skills that an instruction gives you is the ability of quickly reading and categorize informations as you go.

When you went through studying tons of books, skimming short texts becomes a breeze.

Re: New Raspberry Pi Model B+

#198

Post by antongribok »

dtparr wrote: post #189
cr0sh wrote: post #188

Earlier quoted context omitted.

I'd love to give reddit gold (if I had any) to anyone who could point me to a source for the Pi Zero at the price point it was originally supposed to be selling at: $5.00 I have yet to find it - you can get them cheap, but no where near what the RPi Foundation advertised them at when they first were announced/launched.

It depends where you are. Microcenters generally have them for $5 ($10 for the 'W'), although for Pi Day they're both on sale for $3.14. Sadly, there aren't any near me, but I had a relative who is near them pick up a literal handful last time they came down. Several online places have them for $5, but shipping 'kills the deal' as they say.

MicroCenter is where I buy them. I happen to have one close by.

They also sell the normal RPi3 for $29.99 instead of $35.

Re: New Raspberry Pi Model B+

#199

Post by jwbensley »

Hello71 wrote: post #187
ChuckMcM wrote: post #173

I am always impressed at how people can buy a fully functional computer for $35. That said, as an engineer I often cringe at the compromises made. Like "Gigabit Ethernet over USB 2.0". Since the top bit rate of USB2.0 is 480Mbps and GbE is 1250Mbps, USB 2 only has about 1/3 the bit rate to support it. Now it will be faster than 10/100 ethernet connections but don't expect to send a 100 megabytes/second through it.

wait, since when can gigabit ethernet transmit more than a gigabit per second?

Are you referring to this?

"GbE is 1250Mbps"

1.25Gbps is the "gross" bit rate for 1000BASE-T Ethernet. This is because it uses 8b/10b encoding on the wire (meaning there is a 25% overhead): https://en.wikipedia.org/wiki/8b/10b_encoding

1000Mbps is essentially the "net" bit rate available to the Ethernet protocol.

Re: New Raspberry Pi Model B+

#200

Post by contingencies »

jimmies wrote: post #26
sjuut wrote: post #22

Earlier quoted context omitted.

Or you can use the u-boot bootloader[1], and boot a kernel and root filesystem from TFTP, right? [1] http://www.denx.de/wiki/U-Boot

For any problem, there is always someone who could come up with a brilliant solution and makes me feel like a dummy. That is a great idea I haven't thought of! PS: Upon further inspection, PXE netbooting is already possible on the 3B under the name of "USB booting," it's just not the default in the hardware, and there might be bugs that are fixed in the new version.

Another possible approach would be to use the Linux kernel's ability to load another kernel and hand it control. Unsure if this works on arm64 but it seems likely. https://linux.die.net/man/8/kexec
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