Guard Dog Burglar Alarm
# DIY Guard Dog Burglar Alarm: A Simple Solution for Home Security
As you probably know, most residential burglaries are committed during the day when no one's home. A common technique is to ring the doorbell and, if no one answers after a few minutes, it’s easy enough to go around and jimmy open a window or door. While many people don’t have a vicious guard dog or even an alarm system to protect them, I’m going to show you how you can have both with this easy-to-make guard dog burglar alarm.
## Building the Circuit
First, we need to build a small circuit that only consists of three components: a 50V rectifier, a 12V relay, and a common diode. The diode gets soldered to the relay, and I hot-glued the rectifier right to the side of the relay to save space. You can find any of these components by searching the web—you’ll get plenty of results. Follow along with this schematic, which you can also find on Kipk.com.
## Setting Up the Recording Module
The recording module has a small playback button and there’s a couple of tabs that pop off to remove it. We’re going to send audio directly into the recording module, so I’m going to hook up a mini cable right to the speaker connection on the module. Our circuit is built, and I zip-tied everything together to conserve space. You could put it in a hobby box if you wanted to.
## Adding Audio
Now it’s time to power it up and add some audio. I found a very intimidating royalty-free sound effect of a vicious dog bark that’s sure to scare the poop out of anybody. So, I plugged my audio cable into my PC, hit record, and recorded the sound of the dog.
## Completing the Setup
I picked up a very nice pair of 2.4 GHz wireless audio video transmitter receivers, and that’s what we’ll be using. The output of the recording module gets plugged into the transmitter, then the two remaining connections from the relay get hooked up to the doorbell. Since my stereo is on the other side of the room, I’m going to use the receiver to pick up the sound from my circuit.
## Finalizing the Project
We’re ready to go! The next time someone rings the doorbell, they’ll hear the sound of a vicious barking dog coming from inside the house. That’s sure to deter any burglar. And that’s how to protect your home and family with a guard dog burglar alarm.
As you probably know, most residential burglaries are committed during the day when no one's home. A common technique is to ring the doorbell and, if no one answers after a few minutes, it’s easy enough to go around and jimmy open a window or door. While many people don’t have a vicious guard dog or even an alarm system to protect them, I’m going to show you how you can have both with this easy-to-make guard dog burglar alarm.
## Building the Circuit
First, we need to build a small circuit that only consists of three components: a 50V rectifier, a 12V relay, and a common diode. The diode gets soldered to the relay, and I hot-glued the rectifier right to the side of the relay to save space. You can find any of these components by searching the web—you’ll get plenty of results. Follow along with this schematic, which you can also find on Kipk.com.
## Setting Up the Recording Module
The recording module has a small playback button and there’s a couple of tabs that pop off to remove it. We’re going to send audio directly into the recording module, so I’m going to hook up a mini cable right to the speaker connection on the module. Our circuit is built, and I zip-tied everything together to conserve space. You could put it in a hobby box if you wanted to.
## Adding Audio
Now it’s time to power it up and add some audio. I found a very intimidating royalty-free sound effect of a vicious dog bark that’s sure to scare the poop out of anybody. So, I plugged my audio cable into my PC, hit record, and recorded the sound of the dog.
## Completing the Setup
I picked up a very nice pair of 2.4 GHz wireless audio video transmitter receivers, and that’s what we’ll be using. The output of the recording module gets plugged into the transmitter, then the two remaining connections from the relay get hooked up to the doorbell. Since my stereo is on the other side of the room, I’m going to use the receiver to pick up the sound from my circuit.
## Finalizing the Project
We’re ready to go! The next time someone rings the doorbell, they’ll hear the sound of a vicious barking dog coming from inside the house. That’s sure to deter any burglar. And that’s how to protect your home and family with a guard dog burglar alarm.