Step 1: Disclaimer
I am basically presenting a device that I created in a few nights worth of free time to cure a pesky problem I have been having with phone abuse from three teenaged daughters.
Be aware that this device uses line voltages from an AC power outlet, and that proper care should be taken whenever line voltages are to be tinkered with.
So be safe and don't be stupid.
Step 2: But Why...
Despite the fact that there are 24 hours in a day, this still does not seem to be enough for teenagers who wish to blabber all day and night.
Because of this, I find myself threatening to disconnect the phone at a predetermined time of the evening just so I can get some sleep. Furthermore before my nightly slumber I have to either walk around and collect all the phones or unplug the main line.
This is no joke they will literally stay up all night on a school night talking non-sense.
To remedy this and save some sanity I decided that some automation might take care of this problem. This way I don't have to lift a finger to insure that the phone goes off at a certain time of night.
Step 3: What I Need It to Do
To accomplish this I will use a lamp/Christmas light timer that has the ability to be programmed on a weekly basis.
When triggered the timer will enable a 12-volt wall wart (Transformer), which will trip a relay, which is normally closed, to break the contact in the phone line disabling the phone.
The timer will also remove power to the transformer to release the relay and re-enable the phone.
Step 4: The Pieces and Parts of It All
Going through the parts required make sure you choose a timer that suits your needs. I had one laying about that allowed me to program a weeks worth of scheduling.
As for the wall transformer and relay. Be sure to match the voltage of the transformer to something the relay can handle. The smaller the voltage and current consumption of the relay the better. Also the relay will need to be able to switch at least two wires. Each phone line is a pair of wires.
Finally you'll need a pair of phone jacks and a box to mount everything in.
Step 5: Start Soldering It All Together
Also I needed another wall transformer since the other one didn't produce the correct voltage/current that was needed for the relay.
In the back you can see the phone jacks. We will be utilizing the red and green wires on both the jacks. When wiring to the relay make sure that green connects to green and red connects to red.
Step 6: Getting It Together and Testing.
Once everything checked out, it was time to mount into a box.
Step 7: Scary Isn't It?
I kept the components secured to the box using velcro on the bottom of it and then put velcro on each component. It's not fancy but it seems to work.
I also cut a few holes in the lid for the phone jacks and the A/C line cord.
Once the timer is programmed I tape the lid on, plug in the phones and wait for the crys of pubescent angst.
My days of yelling to get off the phone at a reasonable time are over.