The Raspberry Pi 400 thread!

[jamesh]

Another new product!

https://www.raspberrypi.org/products/raspberry-pi-400/

[CaptainMidnight]

Well done RPF/RPT, it's a great little computer concept, just wished I'd have had one of these when I was younger - massive possibilities ......

[rpiMike]

Awesome, reminds me of computers of the 80’s such as the BBC B, ZX Spectrum and Commodore 64.

Would love to see a pic of the board inside.

Well done Pi team.

[Paul Webster]

Very neat and tidy.

[jamesh]

Awesome, reminds me of computers of the 80’s such as the BBC B, ZX Spectrum and Commodore 64.

Would love to see a pic of the board inside.

Well done Pi team.

There will be third party teardowns out very soon - Jeff Geerling has done one.

It's a new design of boad (not a Pi4 in a case) and has a large heat spreader inside, and the C0 2711 chip which has better clock gating so blocks can be turned off the save power. This means we can run at 1800 by default. It runs very cool.

Teardown.

EDIT: https://www.youtube.com/watch?v=OqpylxL ... ffGeerling

[geerlingguy]

Would love to see a pic of the board inside.

Heat spreader / heat sink:



Everything disassembled:



I have many more pictures of the (great looking) guts in my blog post: https://www.jeffgeerling.com/blog/2020/ ... and-review (including some that aren't in my teardown video).

[hippie403]

1.8GHz default clock? Is that a factory overclock, different revision of the chip or parts selected from the premium bin?

[VeryNoob]

What does the power button do?

[geerlingguy]

What does the power button do?

It turns on the Pi 400

But more seriously, when you plug in USB-C power, the Pi 400 immediately turns on just like a Pi 4. However, you can hard-power-off the Pi 400 by holding down Fn + F10 (power key) for ~10 seconds.

And if you shut it down, you can press the power button to turn it back on.

[jamesh]

1.8GHz default clock? Is that a factory overclock, different revision of the chip or parts selected from the premium bin?

New revision of chip.

[HermannSW]

Another new product!

https://www.raspberrypi.org/products/raspberry-pi-400/

Very interesting product!
(like my ZX81 or Commodore 64 in the early 80s)

Your website seems to be over its limit, the link does not work most times.

I have many more pictures of the (great looking) guts in my blog post: https://www.jeffgeerling.com/blog/2020/ ... and-review (including some that aren't in my teardown video).

So it is neither a Pi4B nore a compute module 4 according the photo.
Is it true that the Pi400 does not have an external CSI-2 camera connector?
Does it have an internal CSI-2 camera connector at least?

[Paul Webster]

1.8GHz default clock? Is that a factory overclock, different revision of the chip or parts selected from the premium bin?

Different chip revision - see 5 minutes into Jeff's video

Edit:
same as CM4 ... which is clocked slower.
So does that mean that CM could safely go to 1.8GHz ?

[tank]

Is it possible to use POE ?

[jamesh]

Is it possible to use POE ?

No.

[geerlingguy]

1.8GHz default clock? Is that a factory overclock, different revision of the chip or parts selected from the premium bin?

Different chip revision - see 5 minutes into Jeff's video

Edit:
same as CM4 ... which is clocked slower.
So does that mean that CM could safely go to 1.8GHz ?

I've been using the CM4 at 2.147 GHz for a ton of testing the past week, and haven't run into any hiccups. Even regular Pi 4 B's will handle the overclock well (I haven't had one fail, and I've maybe tested 25 or so of them), but the key is the cooling. Using a good heatsink and/or fan will help immensely.

The Pi 400 has a huge heat spreader (that weighs around 100g) to get the heat away from the SoC.

[cleverca22]

is the usb-c port wired up any differently from the pi4b?
was the second ADC of the PMIC wired up to the extra CC line?

i notice there are 3 usb-host ports, is the 4th port used for the keyboard?

[Paul Webster]

Is it possible to use POE ?

No.

I see from Jeff's teardown video (at 4:40) that the new Ethernet controller supports POE+ - so I presume the issue is the lack of wiring inside the Pi400 to take power from there.
Supporting the new controller is interesting though ... perhaps it means that the next RPi release has built-in POE using it.

https://www.bourns.com/docs/Product-Dat ... 1625el.pdf

[aBUGSworstnightmare]

Is it possible to power Pi400 via GPIO header .. and where is pin1 of the header (can't see this from the product brief)?

[jamesh]

Why are people asking questions that seem to be asking to use the Pi 400 in a way that its really not intended to be used? This is a desktop version of the Pi4. That is the target market. If you want power over GPIO, or OTG boot or the PMIC ADC why not use the Pi4? There are trade offs, pick the right tool for the job!

[LTolledo]

Dagnabbit! I WANT ONE!

when will it be available?
....seems like my local fave supplier may be a bit to late with new item stockings....

[cleverca22]

Why are people asking questions that seem to be asking to use the Pi 400 in a way that its really not intended to be used? This is a desktop version of the Pi4. That is the target market. If you want power over GPIO, or OTG boot or the PMIC ADC why not use the Pi4? There are trade offs, pick the right tool for the job!

i wanted to use the PMIC to interrogate what is on the usb-c port better
the pi4b isnt suitable for that, because only 1 CC line is wired up, and you cant even detect the usb-c cable if its in upside-down

having both ADC's wired up would only be a single extra trace on the pcb, and would allow you to detect if the cable is going to a host or device, and detect if its an e-marked cable, then the host/device mode can be fully automatic, but not via the legacy OTG_ID pin

[paulhothersall]

please sell just the board as a SKU, perhaps with stick on heat sinks.

Its a pi with all IO on one side. this is a huge win for many many projects. I can already see me getting a bunch of these, especially with the higher clocked CPU helps, and it will be eWaste just to toss the keyboard for them.

[fanoush]

Will it be available in black color too?

[jamesh]

Will it be available in black color too?

Eventually, according to an Eben interview somewhere. No idea when. It's needed for commercial usage - call centres etc.

[MuddyDogs]

This is AWESOME
LOVE the form factor. Totally takes me back to my youth with the BBC Model B. Happy days
Also just really practical. Total thumbs up.
Have one on order from Pimoroni now.