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News Raspberry Pi 4 brings new GPU, USB 3.0, 4K

Discussion in 'Article Discussion' started by bit-tech, 24 Jun 2019.

  1. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    For running two two-drive arrays, there's always the option to use *two* hubs: drive A from each array in one hub, drive B in the other. That way you get full throughput while using array 1 or array 2; only when using both simultaneously will the throughput get halved.

    'course, at this point there are probably easier options out there...
     
  2. edzieba

    edzieba Virtual Realist

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    The dual HDMI is an interesting twist. Couple of iPad Mini panels & controller boards (or a couple of small UHD panels + board) plus a RPi4 and you have a playback-only Tensor Display module, as long as the two HDMI signals can be genlocked.

    You having a laugh?

    Barrel connector:
    - Get the right outer diameter
    - Get the right inner diameter
    - Get the right polarity
    - Get the right voltage PSU
    - Make sure it can supply the needed current

    Type C:
    - Make sure it can supply the needed current

    Plus you can pick up a USB charger from damn near anywhere. PSUs with barrel connectors (even those garbage 2-pins-and-a-million-flimsy-adapters fire-hazard transformers) are much harder to find now everybody has switched to USB for everything.
     
  3. nimbu

    nimbu Well-Known Member

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    Been looking all morning for a 4 drive + USB3 of these:

    https://www.span.com/product/USB2+e...TA10-SiI5744-for-2x-SATA-HD-Normal-RAID~16348

    Drives go into here, power via a pico PSU, USB output to the Pi.

    1) not sure if you can find the 4 drive to USB3 anywhere
    2) might not fit that box you are trying to cram it all into
    3) the bridge board itself needs power, which is via an only school floppy drive connector.
     
  4. Jeff Hine

    Jeff Hine Nothing special

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    For as long as I've been aware if RPi's, I've been mildly curious as to what they do out of the box, with no further outlay... are they just iCPU mainboards...?
     
  5. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    Depends on the box. If you buy just the board, not a lot. If you buy a bundle that includes a power supply, flashes an LED on and off. If you buy a bundle that includes a power supply and a microSD card with an operating system on, flashes an LED on and off in a different pattern. If you buy a bundle that includes a power supply, microSD card with an operating system on, and monitor, brings up a pretty picture. If you buy a bundle that includes a power supply, microSD card with an operating system on, monitor, keyboard, and mouse, it's a PC.

    Obviously, you can remove the "buy a bundle" part for any of those things you already own.
     
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  6. Jeff Hine

    Jeff Hine Nothing special

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    So; it needs some level of storage, monitor & I/O peri's to make it a usable machine...?
    Not my level of tinker/build-age, but a good platform for "next-gen. tech. insight, now".
     
  7. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    There's no building to it (regardless of what Kano used to claim with its "build your own PC" kits): microSD goes into microSD slot, HDMI cable goes into HDMI socket, keyboard and mouse go into USB socket, power cable goes into power socket. Job dun.

    Yes, there's a book about plugging it in - but it also covers writing your own programs and building circuits and stuff. Also, lots of very pretty pictures I didn't make (and a few I did.)
     
  8. Yaka

    Yaka Well-Known Member

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    nifty upgrade, just a damn shame i got a couple of 3 B+s other day
     
  9. Jeff Hine

    Jeff Hine Nothing special

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    I limit my knowledge to plugging it in & switching it on - iirc, they're Linux units & that scares me on dysentery levels.

    ... and I limit 'reading' to PC magazine levels. :(
     
  10. loftie

    loftie Well-Known Member

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    Author seems like a right dodgy bloke :p
    I know my niece has started using scratch, you got a rough idea of the age the book could be aimed at? Might point my sister towards it and a Pi as I assume it could fulfil the role a modern day equivalent to the electronic kit/board thingies we had when we were kids.
     
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  11. adidan

    adidan Guesswork is still work

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    Linux has come on a long way. You can even easily play some Windows games on them now
     
  12. nimbu

    nimbu Well-Known Member

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    I tend to think of them as motherboards with intergrated CPU, GPU and memory.

    Just like regular you would add the following to make a "complete" computer.

    Hard drive (in this a micro sd card)
    Case
    Power supply
    Keyb / mouse / monitor

    Finally it does need an OS, which most people use linux for that. Windows has been run on the pi, but its not really good enough for a daily driver or simple to install (https://www.tomshardware.co.uk/windows-10-raspberry-pi-hands-on,news-59962.html)

    As someone said above, Linux really has come a long way, especially on the Pi as in my opinion a large and active community behind it.

    Ive had a couple of Pi's over the years to play with and it can be fun!
     
  13. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    Not 'alf.
    Officially, it's good for the sort of seven-plus range - but it really depends on the kid. Very colourful, though, with little cartoon guys and gals popping up to offer advice. Younger kids would definitely need parental assistance, particularly when it comes time to start playing with LEDs - it is still all-too-possible to fry a Pi by shorting a couple of GPIO pins...
    Or legal, for anyone who doesn't have a volume license agreement that includes Windows on Arm...
     
  14. Jeff Hine

    Jeff Hine Nothing special

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    While I get that other ways of doing stuff work for lots of other people, Linux just isn't for me... my brain (Asperger's - too 'new/different'), specifically.
     
  15. Fingers66

    Fingers66 Kiwi in London

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    I have one running PiHole which blocks all adverts on my home network, all for an outlay of under £50. Worth its weight in gold.
     
  16. Isitari

    Isitari Active Member

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    Run a pi-hole for your whole network :)

    https://pi-hole.net/

    Runs off my original model B like a dream :D.
     
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  17. Xlog

    Xlog Active Member

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    I'm guessing they are still reusing peripherals from BCM2835 days and we can only dream about some up-to-date documentation?

    Too bad they ditched second CSI/DSI interface, but at least now we have gigabit and pci-e (any info on what gen it is?), so that opens up way for some things.

    Gareth, can you post output of iwlist command?
     
  18. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

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    The official word on a possible datasheet for the BCM2711 was... not promising. Got Broadcom to thank for that one.
    Single lane of PCIe Gen 2, USB, and the gigabit Ethernet for a total of 5Gb/s (ish) of external bandwidth to and from the SoC. Bear in mind the PCie lane is internal to the design, though, it's not something that's broken out for you to shove random hardware onto.
    I'm out of the office right now, but if I remember on my way up to bed tonight I'll fire it up.
     
  19. Xlog

    Xlog Active Member

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    Not suprising, this was always the major downside of rpi - no up-to-date datasheets or errata unless you are big enough for Broadcom to sign NDA with you.
    And this went from interesting to couldn't be bothered. Wish i.MX8 based SBC/SOMs would hit the market faster.
    Was thinking about inevitable ComputeModule4 and what could be done with it.
     
  20. adidan

    adidan Guesswork is still work

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    Last edited: 24 Jun 2019
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