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The doorbell in my house is one of the more effective ones that I’ve had over the years. The Campanello project is a custom doorbell that is made from from a set of children’s resonator bells. David Prochnow is the author of the piece and I appeal to him to give those less expert of us (I include myself) in electronic circuit building, detailed step-by-step instructions. It seems like everywhere you go, someone’s cell phone is playing a personalized ringtone. With eight in total, you can program it to play virtually any song when the button is pressed.
With this neat DIY project from KipKay, now I can turn the doorbell off at naptime at the flip of a switch! Whether annoying or clever, it’s your call, but inside your home, it’s still the domain of the boring “ding-dong.” Not for long, however. Make sure that the household power is disconnected from your doorbell system before you begin this project. Disconnect the doorbell button from its low- voltage transformer, and connect the wires to the inside of the MP3 player’s Play button. Take note of which wires are connected to the transformer (these notes will help you rebuild your doorbell, if you long for a dingdong, again). I believe capacitors are used on the regulator chip itself for voltage stability and are actually inside the black box. They use the same old generic sounds to let you know when guests have arrived, as demonstrated below. But why do that when you can do it yourself, like Jason Poel Smith of DIYHacksandHowTos did.


To set the ringtone, he held the microphone up to computer speakers and recorded the sound (in intervals of 20 seconds). To make it louder, you can replace the speaker on the recording module or use it as the input to powered computer speakers. It is a DIY project, so you’ll need to follow this guide for a complete set of instructions. Since the remote is using radio frequency I can keep it up somewhere away from the kid’s hands and not worry about them turning the doorbell off and on.
If you’ve got a spare MP3 player laying around your home, it’s time to hack your household doorbell system and create your own customized “dingtone.” Just like your cell phone’s ringtone, you can change your dingtone to match the season or your mood. This effort could require some DOS batch programming outside the Desktop Identity application.
If you find a small amplifier that takes a 9v input, you can run the power leads directly to this. Jason made his own custom doorbell chime by adding a simple recording module to a wireless doorbell system.To do this, he took apart his old doorbell and replaced the speaker with his own recording module (that you can get at any electronics store) which has its own speaker.
Since the play button also functions as a stop button, the ringtone will be interrupted if the doorbell is pressed several times before the chime is finished. Disconnect the doorbell button from its low- voltage transformer, and connect the wires to the inside of the MP3 player’s Play button.
If you’re more interested in the actual sounds it makes, you might want to take a look at this Campanello project. You’ll find everything you need, right down the the code used to program the microcontroller. Connect the five-volt voltage regulator’s input to the adapter, and attach its outputs to the USB female cable.


Connect the MP3 speaker and squeeze both the MP3 player and speaker system into the doorbell housing. He connected the recording module and its own battery to the doorbell receiver by simply twisting a few wires together.
Plug the MP3 player into the USB female cable, which will power and charge the player’s battery. For more detailed instructions, check out his project page on Instructables.If you don't like chimes or sounds period, maybe you'd rather receive text messages when someone's at your door? Connect the five-volt voltage regulator’s input to the adapter, and attach its outputs to the USB female cable.
Then attach another line from the wall adapter’s output to the MP3 speaker’s battery terminals. Look at the player's batteries and add them up, and find a voltage regulator that will output that amount, and has an input range that accepts 9v.
Then attach another line from the wall adapter’s output to the MP3 speaker’s battery terminals .
Plug the MP3 player into the USB female cable, which will power and charge the player’s battery. THIS POSTMAN RINGS ONCE Before you reconnect the household power, check all of your wiring with a multimeter.



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