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

[Henner Zeller]

On 6 November 2014 15:34, Casey Callendrello <c1 at caseyc.net> wrote:
> 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.

+1

>
> -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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>