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Thread: raspberry pi

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    raspberry pi

    raspberry pi anyone tried it? Hadn't heard of it until recently.

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    Supporting Member spot's Avatar
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    Re: raspberry pi

    I've been sat at one for most of the day, it's a wonderful device. I was watching YouTube tutorials on it at one point.
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    Re: raspberry pi

    I've decided I'm going to get myself one.

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    Re: raspberry pi

    It's delicious.

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    Re: raspberry pi

    I've seen them mentioned a number of times.
    What is it they are good for?
    "The trouble with people isn't that they don't know, but that they know so much that ain't so." - Will Rogers
    "Truth isn't Truth" - Rudy Giuliani

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    Re: raspberry pi

    Quote Originally Posted by LarsMac View Post
    I've seen them mentioned a number of times.
    What is it they are good for?
    Computation.

    It fits all sorts of useability tests. From memory it has...

    4-core 1.4GHz Arm processor
    1GB RAM
    Micro-SD slot for your own choice of operating system and storage. I tend to put 32GB but it will take, say, 256GB. I usually add 100MB/s storage and allow a 10GB swap.
    Built-in WiFi and Bluetooth
    4xUSB2 slots for wired mouse, keyboard etc (but it can run headless or with bluetooth mouse and keyboard)
    300 Mbps max Gigabit Ethernet
    a 5V 2.5A power socket so it averages maybe 5-8 Watts like a LED lightbulb. You can choose to heatsink the processor but it's thermally protected if you don't.
    40xGPIO pins, a camera and sound connector, HDMI output socket

    and $35 at the counter. I run one as a headless file server in the back of a drawer, the only cable is the power cord and it stays on permanently and runs Debian. I'd pay $6 a month for the same thing as a virtual machine in a cloud (1GB/50GB) but that would have far slower data transfer rates to my property with ten times the cost over five years.
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    Who has a spare two minutes to play in this month's FG Trivia game!

    The watch of your vision has become reasonable today.

    It’s normal. You must provoke. You must insult the belief of all monotheists. You must make fun of the belief of all monotheists.
    From the upper tier of the Leppings Lane End of the Hillsborough Stadium, I watched the events of that day unfold with horror.
    When the flowers want to oxygen and nutrition, or you’re a wedding or party planner, I will help you too much.
    Write that word in the blood

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    Re: raspberry pi

    Quote Originally Posted by LarsMac View Post
    I've seen them mentioned a number of times.
    What is it they are good for?
    It's just a mini computer (it's the size of a booklet) without an operating system intended to help people get in to programming with little outlay. you can opt for one of the linux distributions to come with it (in the UK anyway) or download off the internet. Comes without any peripherals or even a case although you can buy one for a fiver. You can learn how to ptogramme on it something you can't do on a microsoft or apple computer.

    In short you are not paying for an operating sstem with umpteen features you don't really need (imo) or massive memory that you don't use - I use external hard drives I resent having to pay for a terrabit of built in memory. I back everything up havng thrice lost a computer once to a virus, once to a catastrophic hardware failure and once to a fire (cooling fan failed on the video card and the motherboard got melted in the ensuing fire). The really expensive bit on a computer is the software and that is usually what goes wrong and what ties you to the like of microsoft or apple and and never ending upgrades and cost. I would like to be able to fix themselves myself I pay for technical help from the place I bought the thing and they're actually pretty good my last computer cost the better part of £500 is five years old and in my experience they seem to just stop working one day so I'm looking at replacing it soon. If i can get my head round this I might look at building my own desktop. Not really interested in too much exotica so long as i can go online ansd get my printer etc working that will be fine for me. I tend to lose interest in computers once I have got it doing what I want it to do.

    Haven't really tried it yet as I forgot to order the power source and didnlt have one that would do. Off to Rome next week, fair to say my mind isn't really on it just now.

    British and american ones seem to differ slightly but this will give you an idea of what they are.

    https://www.youtube.com/watch?v=gbJB3387xUw

    She's american I think

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    Re: raspberry pi

    That was the bit I forgot, well done. Size of a credit card.
    Nullius in verba|||||||||||
    Who has a spare two minutes to play in this month's FG Trivia game!

    The watch of your vision has become reasonable today.

    It’s normal. You must provoke. You must insult the belief of all monotheists. You must make fun of the belief of all monotheists.
    From the upper tier of the Leppings Lane End of the Hillsborough Stadium, I watched the events of that day unfold with horror.
    When the flowers want to oxygen and nutrition, or you’re a wedding or party planner, I will help you too much.
    Write that word in the blood

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    Re: raspberry pi

    Oh - and, not least but majorly,

    Full version of the Wolfram Language and Mathematica, including support for notebooks and dynamic constructs like Manipulate and Animate. Additionally includes new Device API to connect to serial devices and the on-board GPIO and RaspiCam.

    https://www.wolfram.com/raspberry-pi/

    That's several hundred dollars worth of genuine student-licensed commercial software pre-installed on the official OS iso. It's an astonishing thing to have achieved. There's a pretty drag-and-drop language there too called Scratch.
    Nullius in verba|||||||||||
    Who has a spare two minutes to play in this month's FG Trivia game!

    The watch of your vision has become reasonable today.

    It’s normal. You must provoke. You must insult the belief of all monotheists. You must make fun of the belief of all monotheists.
    From the upper tier of the Leppings Lane End of the Hillsborough Stadium, I watched the events of that day unfold with horror.
    When the flowers want to oxygen and nutrition, or you’re a wedding or party planner, I will help you too much.
    Write that word in the blood

  10. #10
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    Re: raspberry pi

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    For completeness, I would mention the Pi Zero https://www.raspberrypi-spy.co.uk/20...rry-pi-zero-w/

    Weighing in at 9g, using under 1W, I have one running as a development server somewhere.

    What can you fit in a machine with 512MB memory?

    Code:
    root@study:/home/john# uname -a
    Linux study 4.14.98+ #1200 Tue Feb 12 20:11:02 GMT 2019 armv6l GNU/Linux
    
    root@study:/home/john# free
                  total        used        free      shared  buff/cache   available
    Mem:         443840      101396       72312       11408      270132      279256
    Swap:       1150968           0     1150968
    
    root@study:/home/john# service --status-all
     [ - ]  alsa-utils
     [ + ]  apache-htcacheclean
     [ + ]  apache2
     [ + ]  avahi-daemon
     [ + ]  bluetooth
     [ - ]  console-setup.sh
     [ + ]  cron
     [ + ]  cups
     [ + ]  cups-browsed
     [ + ]  dbus
     [ + ]  dhcpcd
     [ + ]  dphys-swapfile
     [ + ]  fail2ban
     [ + ]  fake-hwclock
     [ - ]  hwclock.sh
     [ - ]  keyboard-setup.sh
     [ + ]  kmod
     [ - ]  lightdm
     [ + ]  mysql
     [ + ]  networking
     [ - ]  nfs-common
     [ + ]  nmbd
     [ - ]  paxctld
     [ - ]  plymouth
     [ - ]  plymouth-log
     [ + ]  procps
     [ + ]  raspi-config
     [ - ]  rpcbind
     [ - ]  rsync
     [ + ]  rsyslog
     [ + ]  samba
     [ - ]  samba-ad-dc
     [ - ]  saned
     [ + ]  smbd
     [ + ]  ssh
     [ - ]  sudo
     [ + ]  triggerhappy
     [ + ]  udev
     [ + ]  ufw
     [ - ]  x11-common
    root@study:/home/john#
    That's 25% memory used, 75% still free.

    Note the Samba server, mysql and apache2 all up and running.

    $10 plus a micro-SD card and USB power lead.

    And it has built-in WiFi.
    Nullius in verba|||||||||||
    Who has a spare two minutes to play in this month's FG Trivia game!

    The watch of your vision has become reasonable today.

    It’s normal. You must provoke. You must insult the belief of all monotheists. You must make fun of the belief of all monotheists.
    From the upper tier of the Leppings Lane End of the Hillsborough Stadium, I watched the events of that day unfold with horror.
    When the flowers want to oxygen and nutrition, or you’re a wedding or party planner, I will help you too much.
    Write that word in the blood

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