DIY Tripwire security alarm device using a transistor / Cut wire alarm / Wire Break Alarm
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- Опубліковано 9 вер 2024
- How to make simple DIY Trip wire alarm system using a transistor. (This device is a simple DIY intruder alarm). You can pull thin copper wire and connect to this device and guard your territory, and If someone tears the wire you will know it. The device will be turned on when the wire is cut (This is Wire Break Alarm). Also, you can add a reed sensor to this device and make a door alarm system. The Device has a very simple circuit (schematic) so you can easily build it.
Also, you can use a relay instead of the transistor, video about that you can watch here: • How to build Tripwire ...
To find out more about MOSFET Transistors watch this:
• How MOSFET Transistor ...
If you don’t have a buzzer, you can make your own DIY sound indication device using a loudspeaker, video you can find here: • DIY Alarm Siren / Simp...
(If you are going to use my DIY sound indication device instead of an active buzzer, you probably need to add a resistor to the loudspeaker sequentially, the resistance of the resistor depends on the voltage of the power source and resistance of loudspeaker. Don't burn your speaker!)
Hi guys, If you liked this project, then check out my next project where I build a totally different device with the same components: ua-cam.com/video/ZXvtTmxAhu8/v-deo.html
Can you please explain the construction and the working principle???
Well, just to ask, aren't you short-circuiting the battery when the alarm's ok (not activated) ?
Brother, I think you should install an infrared transmitter head and a receiver head and weld them on the two ends of the line, and then install them in a hidden place on the car. When the thieves are about to steal the car, the infrared rays will be received and an alarm will be issued.
pretty cool. I'm going to build one of these for a security system for a tent. Planning to use necklace magnets to connect the wires at each corner of the tent. If someone opens the tent at any of the 4 corners it will pull the low strength magnets apart and set off the alarm. Thanks for sharing how to do this.
YOUR EXPLANATION IS SO VERY GOOD. IT MADE ME SO GENIUS JUST BY WATCHING THIS VIDEO. IM LITERALLY HAPPY RIGHT NOW AS I REALLY GET IT
Ha ha ha. That was pretty good. Right to the point instead of dragging it on for 22 minutes or more.
thank you, i scavenge some mosfets and found one FQA9N90C, i used a reed switch and a magnet installed on a tpost of my motorcycle and use my 12v siren did your tutorial and its working perfectly everytime someone turns the handlebar.
Can you add a timer? Turn off buzzer permanently after a few minutes?
i just built it it works great thanks for the info
Great demonstration
How to make same alarm but when trigger wire is broken alarm sounds even when trigger wire is reconnected?
Hi mate 🙋♂️ did you ever find out the answer to your question 🤔 I was wanting to know the same thing about 😊 Thanks John 👍
Is there to incorporate this between a male and female plug? Any help would be greatly appreciated, thank you.
nice video., so easy to understand.. anyway, if I wish to modify this tripwire alarm into 220v buzzer.. what components should I need
Thanks. You can connect a 12V relay instead of 12V buzzer, and you will be able to control any 220V device.
got it... thanks EP
I want a diagram of a circuit that contains IPS. Whose job will be to beep 5/6 times when the power goes out. 2 times per second. And when the electricity comes, it will beep once. Please help me with the diagram and what components are needed.
Hi Adam,
I wonder if you could help me, I'm trying to develop a weighing scales that has a built-in max and minimum alarm.
let me explain I'm in the process of setting up a weight loss business and I don't want my patients to be able to see their weight. Ideally what I want is for them to stand on the weighing scales and if they go over a preset maximum weight, an alarm will go off and similarly if they go below a preset weight an alarm will go off.
instead of that thin wire can we use a LDR for laser security alarm?
No, I think, it will not work correctly. To make it work with an LDR you need to modify the schematic, but then it will be a completely different security device, so maybe it'll be better to start building a laser security alarm in the first place.
thanks bro
I am very hapy u project nice
What kind of wire did you use to do this? and where did you get it? I have some but the wire won't hold a charge at all. Thanks
Hi, I've used 0.1 mm copper wire, you can get such wire for example from an old transformer. I don't know, what means "the wire won't hold a charge", maybe you mean that the wire has high electrical resistance, but this device was designed to work with the long thin wires that have relatively high electrical resistance.
Hi Friend great. Why using 2 wire?
If I touch one wire the alarm sound can come? Do you have any circuit?
Hi, the very low current flows from one wire to another, so if you use just one wire the electric circuit is not complete, the current does not flow, and it will not work. It will only work if you touch two wires at the same time. For now, I don't have any touch sensitive solutions (circuit)... maybe I'll figure something out in the future.
What about a 9v battery ?I am sure I can get a 9 v buzzer .The resisters would have to be changed ?
Hi, It will work with 9V battery, and I think there is no need to change resistor, it should work fine with 47k resistor.
Thank you .
hi nice project. i'll try twice times but i listening some humming (noise) sound and the transistor also dead . how to remove that sound please help? i use copper wire around 280m long.
Hi, Is there power lines nearby? Because it looks like interference. Try connecting a 1uF - 10uF capacitor in parallel to your 280m wire, it may help. If IRF540N often dies it probably because of the overvoltage between "gate" and "source" pins.... it is caused by that interference (probably). You can try to connect a 14V - 18 V Zener diode between "gate" and "source" pins, it will limit the voltage. But the best would be to eliminate that interference.
hi thanks for your reply and sorry for the late. i try 12 volt relay, it successfully work again thanks for your project.
What transistor???
Can I Use it for long distance cables like 15Km length
Hi, theoretically yes, but I don't know if it will work if there are power lines nearby, it may receive some interference from those lines. And maybe you will also need to choose some higher value of the resistor.
Why does it alarm when the wire is cut
Hey, if i put smth like 900m of a wire, what thickness of a wire should I get?
Did you try a wire that long, ad does consumption jumps?
thanks
Hi, the longer the wire the less power consumption in the standby state. But if you use very long wire the device may work unreliably or it may make noise even when the wire is not broken. Also I am concerned about the interference from power lines that may be near.
About the thickness: The thicker the better. I recommend using 0.1 mm wire, theoretically with this thickness should work even with 5000 meters of wire, so 900 meters not a problem, but I didn't try wire that long.
Cool!
WIll try with 0.1. I have to interwove it through wire fance somehow -dont know how, and than connect it
to GSM alarm. Any suggestions how should I connect it ?
There are no power lines near, maybe 250m...
thanks a lot!
cheers
Ok then. I don't know how exactly connect to GSM alarm, I need some information about how your GSM alarm can be activated. I think we can try to figure it out later when the device will work. I will be glad to hear about the results!
ok!
I am considering this one:
www.ebay.com/itm/122261548045?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
btw, congrats for your channel
You need to use a 12 volts relay to connect my device to GSM alarm. Here is how:
1. you need to connect the coil of the relay to the active buzzer (in parallel).
2. Connect normally open contact of the relay to INT1 and GND of GSM alarm.
That is all.
Theoretically you can use a diode instead of the relay, but for safety let's follow the instruction of GSM device and use a relay.
Hope everything will work.
Can i use 9volt battery?
Yes, it will work.
can i use 9v battery with same component?
yes
718 , mospat invitar 12dc ,,, AC 300 volt KSA nekala
Hi, I would like to stretch a wire around my garden, and tight the wire on a fence. One week ago, it was the 5th time I was robbed. The robbers are passing alway thtrought the fence, thus I want to connect your invention with the security alarm. I bought "Wireless GSM Home Security Burglar Alarm System Auto Dialer SMS SIM Call 433MHz". Is it possible? the fence is around 450m. Do you think 12V is enough? What about the thickness of the wire? What transistor and resistor I need?.. Thank you in advance for your answer :). Greetings from Greece, Petr
Hi!, 12V is enough. I recommend using 0.1 mm wire, theoretically with this thickness should work even with 5000 meters of wire. Use the same resistor and transistor like in the video, everything should work fine. I need to see the instruction to your GSM alarm in order to tell you how to connect it. Or you can just tell me in which ways your GSM can be triggered, does your GSM alarm have any pins that need to be connected together in order to trigger it?
Thank you for the quick reply :). This is the alarm www.keruistore.com/wireless-gsm-home-security-burglar-alarm-system-auto-dialer-sms-sim-call-system.html , I believe that a simple connection to the pins should work. Concerning the transistor, I tried to look it up on ebay, but I did not find the exact model. I will try to find it in the local stores in Greece. If I do not find the IRF540N P543D, do I have other choices? Can I use any transistor of 12V?
The best is to use N-channel MOSFET, you can use something like IRF520 or IRFZ44Z, this is just those that I know, you can use N-channel MOSFET with lower current and voltage. Maybe you should use 12V relay to connect my device with GSM alarm, it is just for safety because I don't know what input voltage GSM alarm requires for triggering. I need manual to say for sure how to connect, or maybe you can figure it out yourself.
On the site I sent you is written Input Voltage DC 12V / 1.2A. Thank you for the answers, I will try something.
12V volts is for powering the alarm, I meant input voltage for triggering the alarm, and that may be different voltage, for example 5V. I just don't want to burn your GSM alarm, everything must be connected correctly. It says that it has: 4 wired and 6 wireless defense zones, but I just don't quite understand what they mean by "wired defense zones", and where the inputs for wired defense zones. On the picture it has 4 pins for "grounding wire" and I don't know what should be connected there, do you know? P.S. I Hope you connect everything correctly.
can i incorporate it with gps?
I have no idea... what are you trying to achieve?
Understand us about digram
you just need to understand how transistor works and it's all make sense..
جریان بیکاری زیادی دارد و باتری خالی میکند.
I'm not understand
what if i change transistor
There are millions of different transistors, so, It depends on what kind of transistor you are going to use instead. Possible outcomes: It works, or it doesn't work.
Electrical Projects can i use any one transistor?If yes then, what about resistor which one?
You cannot use any transistor. The best would be to use N-channel MOSFET, but if you use P-channel MOSFET, you need to change the polarity of the power source, and polarity of the buzzer. Also, it can work with bipolar transistors, but I prefer MOSFETs instead. Just tell me what kind of transistors you have, and I'll tell you what fits the best.
Electrical Projects I will use npn.Then what about resistor?
It depends on NPN transistor. But anyways try 47K like in the video, if it doesn't make sound try 22K or 10K. (I hope you know how to connect bipolar transistor instead of MOSFET)
bro I HAVE A GREAT IDEA WITH ARDUNIO + GSM MODULE + YOUR THIS PROJECT (FOR EASY FISHING ) PLEASE UPDATE YOUR CONTACT DETAILS ON YOUR
Electrical Projects [CreativeLab] CHANNEL IN ABOUT SECTION
Do you have a breadboard ?
I don't have any regular breadboard, I only have a solderable breadboard, but I rarely use it. If I need to build a device with a lot of components I just make PCB.
What's bredboard guys. Tell me about that
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