1. Forum
  2. Fidonet
  3. RBERRYPI

  • Re: tapping into Vaillant Ebus data

    From Harry Bloomfield Esq@3:770/3 to druck on Wed Feb 12 13:31:21 2025
    On 03/02/2025 21:24, druck wrote:
    No, but the micro HDMI sockets are fragile, especially if a heavy
    adapter is used to connect a full sized cable, instead of using a
    specific micro HDMI cable.

    It's probably why the machines were being sold off, but if you only
    intend to use one display, it shouldn't be a problem.

    Both are working. What I didn't understand, about HDMI, was that the
    display need to be on before the Rpi. Rpi 'talks' to the display, whilst setting up, to enquire what the display resolutions it supports. If it
    doesn't get the replay, the Rpi doesn't activate the HDMI output - or at
    least that seems the way it is..

    --- SoupGate-Win32 v1.05
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
  • From Michael Schwingen@3:770/3 to Harry Bloomfield Esq on Wed Feb 12 20:48:38 2025
    On 2025-02-12, Harry Bloomfield Esq <harry.m1byt@outlook.com> wrote:
    Both are working. What I didn't understand, about HDMI, was that the
    display need to be on before the Rpi. Rpi 'talks' to the display, whilst setting up, to enquire what the display resolutions it supports. If it doesn't get the replay, the Rpi doesn't activate the HDMI output - or at least that seems the way it is..

    The DDC EEPROM in the monitor *should* be powered by the pi via the HDMI
    cable, so having the monitor plugged in should be enough - it does not
    have to be powered on.

    cu
    Michael
    --
    Some people have no respect of age unless it is bottled.

    --- SoupGate-Win32 v1.05
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
  • From Harry Bloomfield Esq@3:770/3 to Michael Schwingen on Fri Feb 14 21:27:06 2025
    On 12/02/2025 20:48, Michael Schwingen wrote:
    The DDC EEPROM in the monitor*should* be powered by the pi via the HDMI cable, so having the monitor plugged in should be enough - it does not
    have to be powered on.

    This was an older TV set, with an HDMI input..

    --- SoupGate-Win32 v1.05
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
  • From Michael Schwingen@3:770/3 to Harry Bloomfield Esq on Sat Feb 15 14:57:48 2025
    On 2025-02-14, Harry Bloomfield Esq <harry.m1byt@outlook.com> wrote:
    The DDC EEPROM in the monitor*should* be powered by the pi via the HDMI
    cable, so having the monitor plugged in should be enough - it does not
    have to be powered on.

    This was an older TV set, with an HDMI input..

    IIRC, that was in the HDMI standard from the beginning (like on analog VGA
    when DDC was introduced), but of course there are devices that ignore parts
    of the standard.

    cu
    Michael
    --
    Some people have no respect of age unless it is bottled.

    --- SoupGate-Win32 v1.05
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)