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Latching Touch Sensitive Alarm Circuit on breadboard | 555 Timer project #2

Elonics - Electronics Projects on Breadboard

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A Tutorial on How to make a Touch alarm / Touch sensor circuit that latches the output whenever our skin (finger) or any object with negative charge gets in contact with a touch wire. An explanation of how this circuit works is also included in this video.
The link to project page & circuit diagram: elonics.org/to...
Link to previous tutorial (Touch On - Touch Off circuit): • Latching Touch Sensiti...
Components required:
* 555 Timer IC
* BC547 (You can use any npn transistor)
* A buzzer
* LED
* Momentary Push Button Switch
* Resistors 1 x 10K, 1 x (The series resistor for LED's)
* Breadboard
* Few Breadboard Connectors
* (5-12)V of DC power supply
This channel has a lot more electronics projects & 555 timer projects. So feel free to check them.
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Опубликовано:

29 авг 2024

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Комментарии : 93

@ElectronicswithReyon-yp2dy 2 месяца назад

Most circuit videos not explaining theory. But you explanied that brilliently. I learn a lot from you. Thanks a lot. Keep it up the good work.

@robitops1547 4 года назад

Practical with theory + Animation. Awesome job

@haroonraseeth4457 2 года назад

Mini project without arduino video Podunga please 😭😭

@UsualYaddaYadda 2 месяца назад

Thanks. Very intuitively explained. Great visuals and no nonsense talkthrough.

@bhavanireddy7248 Месяц назад

I tried it &got output tqsm sir for explaining it very clearly.. Sir please provide report for the above touch alarm circuit

@newworld5733 2 года назад

Awesome Boss, keep it up, that's how engineers are different from others. Thanks a lot

@lcpthr6861 2 года назад

This circuit, which act as monostable multivibrator or astable multivibrator or schmitt trigger ? Tell me bro 🙂

@GeorgeJFW 5 лет назад

Well done!

@vaibhavnagare8549 5 лет назад

Nice bro keep posting videos love you bro

@electronicshelpcare 5 лет назад

Super idea.

@thfreakinacage 2 дня назад

After adding the transistor: Alarm. Before adding the transistor: Doorbell.

@santiagomaciasvillegas2186 5 лет назад

Eres genial amigo le mando un abrazo desde San Jerónimo Antioquia Colombia grácias

@elonics 5 лет назад

muchas gracias

@naderhumood1199 5 лет назад

V nice .....Many thanks Sir........it's great.

@prateekmahajan190 5 лет назад

The explanation is great, please make some projects with Arduino or esp8266

@elonics 5 лет назад

Thanks. If everything works as planned, I'll start making projects on Arduino from the beginning of next month.

@prateekmahajan190 5 лет назад

Elonics - Electronics Projects on Breadboard That's awesome, thank you bro. Keep up the good work.🙏

@praveensagar3529 5 лет назад

Why no videos after this

@harshitsaxena5602 5 лет назад

Great work bro keep doing

@electronic7979 5 лет назад

Very good 👍

@user-jq6qm4kb9l 7 месяцев назад

Is it possible to use a resistor that has a value of 390 Ohms or greater for a green LED (when giving 9 volts of supply)?

@user-jq6qm4kb9l 7 месяцев назад

The circuit was working earlier, but I had to put in the transistor backwards for it (collector connected where the emitter is meant to be, and vice versa). However, now it is working but the circuit activated immediately after connecting the battery, and the pushbutton is resetting the circuit is expected. Touching the wire seems to do nothing, unlike earlier. I have already checked the circuit several times and switched the transistor back and forth. I did not change anything, it was simply stored in a drawer in my room. The LEDs stop working quickly, and I’ve had to replace it many times (I’m using the correct value for the resistor connected to LED).

@electroniquepassion 5 лет назад

Thank

@siamakaghazeinali 2 года назад

Is there a way if the theft using gloves it be such sensitive to detect touch? The body has electromagnetic field.

@knowthrvdo Год назад

make one video on break failure circuit It is also a great topic for a mini project and on RU-vid their is no video is available in the way you explain projects

@aungmyokhaing6795 7 месяцев назад

How to build 3pin IR receiver instead of touch in these same function or circuit? Please explain.

@hssabir3340 Год назад

Great explanation. I made it. But buzzer is working only if resister and open cable together. Please help me

@viveksharma7675 3 года назад

I need to make it less sensitive. Buzzer should be work only when the wire touched. Is it possible?

@GreatIndianCreator07 10 месяцев назад

Sir i want to close it after some delay please tell how to do that that it auto turn off after 3 sec

@sreejachandran1525 5 лет назад

Super

@sagarghatti 5 лет назад

Nice bro

@lcpthr6861 2 года назад

Which principal are used here monostable multivibrator ,astable multivibrator or schmitt tiger.. Tell me bro

@ArchanaKumari-ii3ky 5 лет назад

NICE! Huh ? When will next video come 😠

@elonics 5 лет назад

Little busy. Might upload a video within a week.

@ArchanaKumari-ii3ky 5 лет назад

Video Video Video

@PramodKumar-si4rr 5 лет назад

@@ArchanaKumari-ii3ky Unsubscribe simply

@mdsharook894 9 месяцев назад

it works 2 3 times but after that Keep buzzering after reset button what can i do

@Fluffypotatoes4 Год назад

How can I make this only start when you stop touching it?

@suswethamangena6539 2 года назад

Sir, can u pls tell me the value for led series resistor?

@aishwaryaravikumar6049 4 года назад

Nice work.... I want 2 use this circuit to turn on wn supply is given and then reset with button. How can i do this??

@ashokaem1643 3 года назад

nice sir

@xavierkang2974 4 года назад

How do u connect the same button but with 2 legs only? Pls help

@dhrubajyotisarkar5394 5 лет назад

Sir... In my case, it works when I touch the negative supply wire... What's the reason...?

@hgameryt6151 3 месяца назад

YES SAME HAPPEND TO ME ALSO WHEN I TOUCH BOTH THE TRIGGER INPUT AND NEGATIVE TRAIL IT WORKS OR ELSE IT DOESNT ,WHAT MAY BE THE REASON DUDEE DO U KNOW ???

@rvil2612 8 месяцев назад

How i make the PCB design of that project

@KBtek 5 лет назад

I wanna make 2 meter proximity sensor can you please help me.... Thanks

@manvisharma1173 5 лет назад

Alright I made the circuit but it won't shut up and isn't obviously touch sensitive what now

@VijaySingh-eb6yz 3 года назад

Hi Can you tell that how we can make a secured atm with sound and touch sensor

@VijaySingh-eb6yz 3 года назад

If yes you can message or leave it

@phonemyinthein9832 4 года назад

Hi...It only works when i touch the negative supply and pin 2 at the same time or.....connect pin two to negative supply.

@lcpthr6861 2 года назад

Same

@lcpthr6861 2 года назад

What will do

@sakshamsharmagsec4529 3 года назад

this circuit is not working on tinkercad please help....

@ARAcademyTamil 5 лет назад

Please do some Arduino projects

@pritamsaha614 5 лет назад

Where is the nxt part ... i have been waiting since months .... sir , i need the circuit of the nxt video very badly.... upload it 🙏🙏

@elonics 5 лет назад

It's here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7NTnDsLUDzQ.html

@ShravanKumar-di7ii 4 года назад

Can we use this to sense water

@mysticaldimples4345 5 лет назад

Can we use a puedo electric sensor in it

@user-cl3hp7dc7c 10 месяцев назад

Sir how to give the power supply?

@santoshdharme5927 5 лет назад

Hey please upload a video on a FM transmitter

@hamzanadeem8469 Год назад

Bro is ma AP na Resistance kit na OHMs ki use ki ha bro tell me please as soon as possible

@i.mpossible 4 года назад

Continue sond is on... Any solution?

@SachinSingh-cl9nq 4 года назад

Sir i want to use LDR in this circuit instead of touch wire what i have to do

@elonics 4 года назад

That'll be a totally different circuit. You can try modifying this circuit: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rhySv8ePwyM.html

@aayushbanerjee1463 4 года назад

He says to connect pin 4 to negative rail but connects the 8 th pin to the negative rail...

@elonics 4 года назад

Both the Pins 4 & 8 are connected to each other. So connecting either of the pins to negative rail will do

@sherrysaeed5378 3 года назад

Who many range this circuit

@vuka9484 Год назад

Can you give me a flowchart of this circuit algorithm?

@bhanusampath6500 5 лет назад

Can I produce sound frequency of 25,000 hz using this same circuit

@elonics 4 года назад

You should use another 555 timer IC in astable mode to generate the required frequency

@bhanusampath6500 4 года назад

Can you please help in making dog repellent system which is my project Target is to produce 20,000+ hz sound frequency

@mayanksrivastava2302 4 года назад

Sir my led goes off only on holding the switch and gets on when on when I release it and buzzer constantly beeps. Plz help

@elonics 4 года назад

Try using a DC power source from batteries if you are currently powering the circuit from a AC-DC adapter. Next try removing the push button switch and manually apply +ve voltage at Pin-6. If it works now, the switch connections might be incorrect. Also the circuit is sensitive to AC sources if they are very near.

@sameeratreya414 4 года назад

@@elonics why it doesnt work when using ac dc adapter? Mine has same problem too. How to have the circuit results with ac dc adapter.

@sakshikadam1417 4 года назад

Sir, how to make the electronic music cup.

@elonics 4 года назад

You can directly purchase it. Ask for a "Buzzer" or "Piezo-Buzzer"

@kashifjehangir9572 5 лет назад

Please send a circuit diagram and working

@nenebaez4145 4 года назад

Hello, could you make a video tutorial on how to make motor sound?

@elonics 4 года назад

This might help: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Q3AQmr2vkxE.html

@chanchalsharma2479 4 года назад

sir in my citcuit it works by sensing object ,when i come to near it then it works without touching but how is this possible

@elonics 4 года назад

Because of induced electrostatic charge. It works similar to how two plates accumulate charges of opposite polarity in a capacitor

@jeymarnagac1640 4 года назад

What is the value of first resistor did you put??

@elonics 4 года назад

You mean the resistor used for the LED? It's 220R

@rajeshmeher4017 5 лет назад

Bro please upload a video on cell phone signal jammer

@nikt4392 5 лет назад

Is there a circuit diagram and explanation for this video?

@elonics 5 лет назад

It's in the video. I didn't create the project page yet

@neerajdadi1665 3 года назад

It is not working

@praveensagar3529 5 лет назад

Sir for every circuit please explain the way you did in this video

@samatrey6357 4 года назад

Are u Indian?

@ShelliLoop 4 года назад

I guess you are in India. You talk too fast for you to use English. Maybe stick with Indian. We English speakers don’t talk “a mile a minute”. Especially with technical topics.