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Re: Something like a KVM switch for multiple Raspberry Pis

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On 9/18/2015 2:42 PM, Martin Gregorie wrote:
> On Fri, 18 Sep 2015 08:40:52 -0400, rickman wrote:
>
>> On 9/17/2015 11:38 AM, DisneyWizard the Fantasmic! wrote:
>>> Who is up for designing a pair of scalable plug-in KVM-over-Ethernet
>>> plug in modules for Pi stacks?
>>> Pi-side dongle with Ethernet and dual power (USB b + legacy barrel) on
>>> one side, with HDMI input, USB b power to Pi, and perhaps an
>>> Ethernet-thru port for the Pi, with usb mouse/keyboard control input as
>>> a dongle, paired with a User-side dongle accepting legacy PS2
>>> mice/keyboard as well as USB mice/keyboard, dual power and HDMI output?
>>> Most setups would have a single User-side dongle and multiple Pi-side
>>> modules, but would be able to accommodate several User-side dongles
>>> (useful in educational configurations.)
>>>
>>> That would satisfy monitoring the start-up.
>>>
>>> I am plugging in my pair of Pis to a monitor which accepts up to three
>>> HDMI inputs, swapping the keyboard/mouse USB cables when needed, but
>>> primary control of each is via Ethernet PuTTY shell and Xming-windows
>>> from a laptop, with more than satisfactory results. Reboots are done in
>>> the PuTTY command line and I have faith the session can be restarted
>>> after reboot. So I rarely need the TV. (save the occasional display of
>>> traffic or weather html pages I wrote specifically for my Pi) …and a
>>> clutter of mice. Yet, I still prefer two RPis headless.
>>> The R-Pis each allow several students to log-in simultaneously over
>>> Ethernet  (using donated e-waste laptops) to test scripts, while the
>>> instructor laptop runs top to keep an eye on endless loops.
>>
>> I'm not completely clear on what you are suggesting.  Are you thinking
>> the Ethernet connection could be used to multiplex the user side dongle
>> between multiple Pis?  It seems rather a busy device, likely another rPi
>> equivalent in complexity.
>>
> Put that way, it sounds very like an RPi with USB keyboard+mouse + HDMI
> monitor plus an Ethernet hub/switch connecting all the RPIs together.
>
> Use the one with keyboard etc to login to the other headless RPis.

Exactly.  Unless there is some advantage to having a device on the pi 
that actually plugs into the HDMI/USB connectors to emulate the physical 
devices.

-- 

Rick

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Thread

Something like a KVM switch for multiple Raspberry Pis "James Harris" <james.harris.1@gmail.com> - 2015-09-06 18:00 +0100
  Re: Something like a KVM switch for multiple Raspberry Pis Dave Higton <dave@davehigton.me.uk> - 2015-09-06 21:46 +0100
    Re: Something like a KVM switch for multiple Raspberry Pis "James Harris" <james.harris.1@gmail.com> - 2015-09-07 17:42 +0100
  Re: Something like a KVM switch for multiple Raspberry Pis ray carter <ray@zianet.com> - 2015-09-07 00:36 +0000
  Re: Something like a KVM switch for multiple Raspberry Pis davehigton14@gmail.com - 2015-09-07 03:54 -0700
  Re: Something like a KVM switch for multiple Raspberry Pis Gordon Levi <gordon@address.invalid> - 2015-09-08 00:54 +1000
  Re: Something like a KVM switch for multiple Raspberry Pis Andrew Smallshaw <andrews@sdf.lonestar.org> - 2015-09-13 12:45 +0000
    Re: Something like a KVM switch for multiple Raspberry Pis Alan Adams <alan@adamshome.org.uk> - 2015-09-13 19:22 +0100
    Re: Something like a KVM switch for multiple Raspberry Pis Jonathan Lane <tidux@faeroes.freeshell.org> - 2015-09-27 15:28 +0000
  Re: Something like a KVM switch for multiple Raspberry Pis Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-13 13:48 +0000
    Re: Something like a KVM switch for multiple Raspberry Pis David James <david@tcs01.demon.co.uk> - 2015-09-13 14:22 +0000
      Re: Something like a KVM switch for multiple Raspberry Pis Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-13 17:42 +0000
        Re: Something like a KVM switch for multiple Raspberry Pis David James <david@tcs01.demon.co.uk> - 2015-09-16 00:01 +0000
  Re: Something like a KVM switch for multiple Raspberry Pis DisneyWizard the Fantasmic! <wiz@FANTASMIC!disneywizard.com> - 2015-09-17 08:38 -0700
    Re: Something like a KVM switch for multiple Raspberry Pis rickman <gnuarm@gmail.com> - 2015-09-18 08:40 -0400
      Re: Something like a KVM switch for multiple Raspberry Pis Rob Morley <nospam@ntlworld.com> - 2015-09-18 14:26 +0100
      Re: Something like a KVM switch for multiple Raspberry Pis Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-18 18:42 +0000
        Re: Something like a KVM switch for multiple Raspberry Pis rickman <gnuarm@gmail.com> - 2015-09-18 15:09 -0400
          Re: Something like a KVM switch for multiple Raspberry Pis "James Harris" <james.harris.1@gmail.com> - 2015-09-18 20:17 +0100
            Re: Something like a KVM switch for multiple Raspberry Pis Rob <nomail@example.com> - 2015-09-18 21:35 +0000
              Re: Something like a KVM switch for multiple Raspberry Pis "James Harris" <james.harris.1@gmail.com> - 2015-09-18 23:19 +0100
                Re: Something like a KVM switch for multiple Raspberry Pis Rob <nomail@example.com> - 2015-09-19 06:48 +0000
                Re: Something like a KVM switch for multiple Raspberry Pis "James Harris" <james.harris.1@gmail.com> - 2015-09-19 11:15 +0100
                Re: Something like a KVM switch for multiple Raspberry Pis mm0fmf <none@mailinator.com> - 2015-09-19 08:13 +0100
                Re: Something like a KVM switch for multiple Raspberry Pis "James Harris" <james.harris.1@gmail.com> - 2015-09-19 11:19 +0100
            Re: Something like a KVM switch for multiple Raspberry Pis rickman <gnuarm@gmail.com> - 2015-09-19 11:31 -0400
            Re: Something like a KVM switch for multiple Raspberry Pis druck <news@druck.org.uk> - 2015-09-19 19:39 +0100
              Re: Something like a KVM switch for multiple Raspberry Pis colonel_hack@yahoo.com - 2015-09-20 22:06 -0700

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