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  • POE gas detector ready, housing, circuit diagram, pictures

    From Jan Panteltje@21:1/5 to All on Thu Nov 2 05:19:02 2023
    Outside view, the metal from the MQ4 detector is electrically isolated from the rest:
    https://www.imagebam.com/view/MEPUSBC

    Bit crowded in there, switcher to 5V, parts just what I found laying about:
    https://www.imagebam.com/view/MEPUSGL

    There is also a BD137 emitter follower hidden under the ethernet module to make 3.3 V for the PIC and ethernet module from the 5 V.
    I modified the ethernet connecter and cut the traces that did put a resistor over the POE power lines.
    Thing gets slightly warm, that MQ4 detector has actually a light bulb like filament.
    On 12V it glows in the dark, one actually survived that 12 V (5 V is the nominal voltage)! Sensitivity is then damaged.

    I am testing free anonymous (no registering) upload site imagebam.com, seems to work OK.

    Circuit diagram:
    https://www.imagebam.com/view/MEPUSJB


    The C code was already published here last week.

    So it basically every few seconds sends UDP packets to 192.168.178.73 containing sensor current, gas concentration, and error messages
    (broken MQ4 filament, high gas level),

    The receiving end processes that data and forwards the data via UDP to 192.168.178.95 that analyses the data and gives voice messages
    via the local sound system, so no stupid beeps, could even work remote if needed.
    It also gives alarm if no sensor messages received for some time.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From piglet@21:1/5 to Jan Panteltje on Thu Nov 2 14:23:39 2023
    On 02/11/2023 5:19 am, Jan Panteltje wrote:
    Outside view, the metal from the MQ4 detector is electrically isolated from the rest:
    https://www.imagebam.com/view/MEPUSBC

    Bit crowded in there, switcher to 5V, parts just what I found laying about:
    https://www.imagebam.com/view/MEPUSGL

    There is also a BD137 emitter follower hidden under the ethernet module to make 3.3 V for the PIC and ethernet module from the 5 V.
    I modified the ethernet connecter and cut the traces that did put a resistor over the POE power lines.
    Thing gets slightly warm, that MQ4 detector has actually a light bulb like filament.
    On 12V it glows in the dark, one actually survived that 12 V (5 V is the nominal voltage)! Sensitivity is then damaged.

    I am testing free anonymous (no registering) upload site imagebam.com, seems to work OK.

    Circuit diagram:
    https://www.imagebam.com/view/MEPUSJB


    The C code was already published here last week.

    So it basically every few seconds sends UDP packets to 192.168.178.73 containing sensor current, gas concentration, and error messages
    (broken MQ4 filament, high gas level),

    The receiving end processes that data and forwards the data via UDP to 192.168.178.95 that analyses the data and gives voice messages
    via the local sound system, so no stupid beeps, could even work remote if needed.
    It also gives alarm if no sensor messages received for some time.






    imagebam doesn't load for me?

    piglet

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to erichpwagner@hotmail.com on Thu Nov 2 15:10:27 2023
    On a sunny day (Thu, 2 Nov 2023 14:23:39 +0000) it happened piglet <erichpwagner@hotmail.com> wrote in <ui0bdd$27sbs$1@dont-email.me>:

    On 02/11/2023 5:19 am, Jan Panteltje wrote:
    Outside view, the metal from the MQ4 detector is electrically isolated from the rest:
    https://www.imagebam.com/view/MEPUSBC

    Bit crowded in there, switcher to 5V, parts just what I found laying about: >> https://www.imagebam.com/view/MEPUSGL

    There is also a BD137 emitter follower hidden under the ethernet module to make 3.3 V for the PIC and ethernet module from the
    5 V.
    I modified the ethernet connecter and cut the traces that did put a resistor over the POE power lines.
    Thing gets slightly warm, that MQ4 detector has actually a light bulb like filament.
    On 12V it glows in the dark, one actually survived that 12 V (5 V is the nominal voltage)! Sensitivity is then damaged.

    I am testing free anonymous (no registering) upload site imagebam.com, seems to work OK.

    Circuit diagram:
    https://www.imagebam.com/view/MEPUSJB


    The C code was already published here last week.

    So it basically every few seconds sends UDP packets to 192.168.178.73 containing sensor current, gas concentration, and error
    messages
    (broken MQ4 filament, high gas level),

    The receiving end processes that data and forwards the data via UDP to 192.168.178.95 that analyses the data and gives voice
    messages
    via the local sound system, so no stupid beeps, could even work remote if needed.
    It also gives alarm if no sensor messages received for some time.






    imagebam doesn't load for me?

    Just tried it again from an other browser (ow chromium) and and other IP addres, no problem.
    Anybody else problems?
    May put it on my website later.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From whit3rd@21:1/5 to Jan Panteltje on Thu Nov 2 11:24:57 2023
    On Wednesday, November 1, 2023 at 10:19:11 PM UTC-7, Jan Panteltje wrote:
    Outside view, the metal from the MQ4 detector is electrically isolated from the rest:
    https://www.imagebam.com/view/MEPUSBC

    Bit crowded in there, switcher to 5V, parts just what I found laying about:

    Excellent! For the market for something like that, something using pi pico-W with a
    wall tumor power supply would be slightly easier to install, and document.
    The use of real wired POE Ethernet is still a bit of a barrier (how, I wonder, would I get
    that to the vicinity of my furnace?).

    The receiving end processes that data and forwards the data via UDP to 192.168.178.95 that analyses the data and gives voice messages
    via the local sound system, so no stupid beeps, could even work remote if needed.
    It also gives alarm if no sensor messages received for some time.

    That's a good feature set. I really like the absolute IP addressing, even if it's nonrouting; it's
    not dependent on DHCP service, just requires some note-taking to survive when your
    net gets new nodes. I've had reconfiguration (loses the printer, test area needs a fresh
    network config every time we power down) issues with addressing. Fixed addressing
    and IP6 together ought to make the internet of things workable.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to erichpwagner@hotmail.com on Fri Nov 3 09:38:17 2023
    On a sunny day (Thu, 2 Nov 2023 14:23:39 +0000) it happened piglet <erichpwagner@hotmail.com> wrote in <ui0bdd$27sbs$1@dont-email.me>:

    On 02/11/2023 5:19 am, Jan Panteltje wrote:
    Outside view, the metal from the MQ4 detector is electrically isolated from the rest:
    https://www.imagebam.com/view/MEPUSBC

    Bit crowded in there, switcher to 5V, parts just what I found laying about: >> https://www.imagebam.com/view/MEPUSGL

    There is also a BD137 emitter follower hidden under the ethernet module to make 3.3 V for the PIC and ethernet module from the
    5 V.
    I modified the ethernet connecter and cut the traces that did put a resistor over the POE power lines.
    Thing gets slightly warm, that MQ4 detector has actually a light bulb like filament.
    On 12V it glows in the dark, one actually survived that 12 V (5 V is the nominal voltage)! Sensitivity is then damaged.

    I am testing free anonymous (no registering) upload site imagebam.com, seems to work OK.

    Circuit diagram:
    https://www.imagebam.com/view/MEPUSJB


    The C code was already published here last week.

    So it basically every few seconds sends UDP packets to 192.168.178.73 containing sensor current, gas concentration, and error
    messages
    (broken MQ4 filament, high gas level),

    The receiving end processes that data and forwards the data via UDP to 192.168.178.95 that analyses the data and gives voice
    messages
    via the local sound system, so no stupid beeps, could even work remote if needed.
    It also gives alarm if no sensor messages received for some time.






    imagebam doesn't load for me?

    Just tried it again from an other browser (ow chromium) and and other IP addres, no problem.
    Anybody else problems?
    May put it on my website later.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to alien@comet.invalid on Fri Nov 3 09:42:36 2023
    On a sunny day (Thu, 02 Nov 2023 15:10:27 GMT) it happened Jan Panteltje <alien@comet.invalid> wrote in <ui0e53$10upn$1@solani.org>:

    On a sunny day (Thu, 2 Nov 2023 14:23:39 +0000) it happened piglet ><erichpwagner@hotmail.com> wrote in <ui0bdd$27sbs$1@dont-email.me>:

    On 02/11/2023 5:19 am, Jan Panteltje wrote:
    Outside view, the metal from the MQ4 detector is electrically isolated from the rest:
    https://www.imagebam.com/view/MEPUSBC

    Bit crowded in there, switcher to 5V, parts just what I found laying about: >>> https://www.imagebam.com/view/MEPUSGL

    There is also a BD137 emitter follower hidden under the ethernet module to make 3.3 V for the PIC and ethernet module from
    the
    5 V.
    I modified the ethernet connecter and cut the traces that did put a resistor over the POE power lines.
    Thing gets slightly warm, that MQ4 detector has actually a light bulb like filament.
    On 12V it glows in the dark, one actually survived that 12 V (5 V is the nominal voltage)! Sensitivity is then damaged.

    I am testing free anonymous (no registering) upload site imagebam.com, seems to work OK.

    Circuit diagram:
    https://www.imagebam.com/view/MEPUSJB


    The C code was already published here last week.

    So it basically every few seconds sends UDP packets to 192.168.178.73 containing sensor current, gas concentration, and
    error
    messages
    (broken MQ4 filament, high gas level),

    The receiving end processes that data and forwards the data via UDP to 192.168.178.95 that analyses the data and gives voice
    messages
    via the local sound system, so no stupid beeps, could even work remote if needed.
    It also gives alarm if no sensor messages received for some time.






    imagebam doesn't load for me?

    PS
    uploaded it all as .tgz to my website:
    panteltje.nl/pub/gas_pic_udp-0.1.tgz

    Untar:
    tar -zxvf gas_pic_udp-0.1.tgz

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Bob Engelhardt@21:1/5 to Jan Panteltje on Sat Nov 4 09:29:25 2023
    On 11/2/2023 11:10 AM, Jan Panteltje wrote:
    [...]

    imagebam doesn't load for me?

    Just tried it again from an other browser (ow chromium) and and other IP addres, no problem.
    Anybody else problems?


    It does load, but ... so slowly that I didn't wait for it.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)