acoustics sensor

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Does somebody know if there is a device for acustics (db) ?

Idea: The wash-machine is in the basement, so we don´t hear it if it´s ready. Now, the idea is, to have a acustics-sensor if the machine is ready it will bleep, so the sensor could trigger a rule to give a notification.

I think it is easier to open the machine and watch the peeper with an arduino or so.

But feel free to create a acoustic sensor.

i know that @sweebee is working on a “clap sensor” and an RF sender with an attiny85 to switch on/off lights.
Maybe this can be hijacked somehow

sounds intressting…

when a washing machine is finished… it will open the door-lock… thats the final part of the washing program… so just trigger the door-lock… normaly it is an eletric-switch… some type of relay will send power to it to lock the door… when power is off… door-lock opens… this kind of binary signal (power on or off) could be the highjacked trigger…

interesting approach. but i guess not everybody wants to take apart the washing machine for that ^^

@leader21 what. Self-made homeautomation with pimatic and don’t hijack the washer? Impossible

@Icesory
good point! but homeautomation = men’s world, washing machine = worlds apart
what about another approach with current sensors that detect if the machine is still running or already in standy?

http://www.ebay.de/itm/2-Stk-Stromsensor-ACS712-20A-Range-Current-Modul-f-Arduino-Bascom-Projekte-MCU-/111592642447?pt=LH_DefaultDomain_77&hash=item19fb70978f

or is this only for dc? maybe there’s some for ac too?!
but this here shows that you can use it with ac too