[Build] RFID door key feature request: Pinpad door bell

[Casey Callendrello]

Might be kind of fun to attach something to the hook switch. That way
you can ring the doorbell by jiggling the phone hook a few times.

-c


On 11/6/14 2:15 PM, Henner Zeller wrote:
> On 6 November 2014 13:56, Rubin Abdi <rubin at starset.net> wrote:
>> Could the * button be used to ring a chime in the space? It's hard for
>> newbs to find the door bell hidden next to the phone.
> Sounds like a good idea and bell-hookup is the next thing that will be
> integrated.
>
> Right now, '*' means 'reset code' and '#' means 'enter number'.
> So overloading the meaning would be somewhat ambiguous. If on one of
> the special characters, ringing should probably something like '#'
> without prior pin.
> (I am also open of having a sequence such as '*333#' be the
> ring-sequence to eliminate accidental triggering - that could be
> clearly marked on the phone).
>
> (in general, the user-interface to use one of the symbol as ring is
> highly obscure and uncommon. I personally don't think that the
> doorbell on the side of the phone is hard
> to find, though we might want to replace the buttons we have there
> with something illuminated and clearly marked - it is not at all clear
> what the three
> buttons do, so I was typically pressing all three when I was door-belling).
>
> Details can be hashed out - but yeah, we need better integration of
> door bell functionality. Currently, there is not bell-hookup yet in
> the entrance system, which is as well needed for (a) the general
> bell-ringing thing and (b) we need an upstairs bell-button.
>
> For anyone interested to help in hooking up the doorbell functionality:
>
>    1) if we have a little aplified speaker that we can hook up to the
> output of the RPi, we already have the hardware in place. Probably
> simple to find in one of the shelves. This will be regarded equivalent
> to ringing.
>
>    2) We need a physical doorbell button mounted outside the upstairs
> door, close to the RFID reader (no wire yet needed, I'll hook it up to
> the firmware of the reader). IIRC, there is an empty conduit box,
> maybe in there ?
>
>    3) There is a 3.5mm hookup on the side of the intercom system. That
> outputs ringing noise from the downstairs bell. Someone should measure
> that and make a little Schmitt-Trigger breadboard or something to
> output a clean signal that we can read with a TTL (not sure if we just
> hook it up, maybe I'll rig up something with the internal controller
> reader, but TTL signal would be good)
>
> -h
>
>> --
>> Rubin
>> rubin at starset.net
>>
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