Ever wanted a more fancy doorbell? This is how to do it. You only need

1 Rasberry Pi with Domoticz

1 RFXcom

1 Nexa 433 MHz wireless doorbell.

1 HTPC with yaVDR

We will skip some parts and assume you got all the other stuff installed already. The Nexa Doorbell is installed in the Domoticz and named as a swtich 'DoorBell'.

1. set up ssh private and public keys so we don't need passwords.

2. From Domoticz server create a LUA script to trigg on the DoorBell

/home/user/Domoticz/scripts/lua/script_device_door.lua

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-- Jan Larsson 2013-11-15

-- Info@janlarsson.net

commandArray = {}

        if (devicechanged['DoorBell']) then

                print ('Door bell script executed')

                os.execute('sudo ssh root@10.10.10.10 /home/user/door.sh')

        end

return commandArray

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3. On the yaVDR TV box create a script to notify about the doorbell, this script will mute the TV and echo a text on the screen. TV box IP is 10.10.10.10

/home/user/door.sh

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!#/bin/bash

svdrpsend VOLU mute

sleep 1

svdrpsend MESG "Door Bell!!!!"

svdrpsend MESG "Go open the door"

sleep 5

svdrpsend VOLU mute

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4. done!