Laser Security System using BC547 Transistor and LDR #security #diy
0:15
YouTubeTeknoTrek
Laser Security System using BC547 Transistor and LDR #security #diy
In this video, I’ve built a simple laser security alarm using a BC547 transistor, LDR, buzzer, and a 3.7V battery. When the laser beam is interrupted or blocked, the buzzer instantly turns ON, activating the alarm system. This is an easy DIY electronics project for beginners to understand how LDR sensors and transistors work together. Perfect ...
21.1K views1 month ago
Shorts
iOS Alarm Sound Evolution #apple #iphone #ios #alarm #sound #evolution
0:51
294.9K views
iOS Alarm Sound Evolution #apple #iphone #ios #alarm #sound #evolution
TabTUNE
Fire Detection System Using IR Sensor | Easy Electronics Project #techshorts#dilveersingh
0:13
15K views
Fire Detection System Using IR Sensor | Easy Electronics Project
EC short lab
Arduino Keypad Lock
diy | project with arduino and cardboard | simple robot samurai face #arduino #arduinoproject #robot
0:08
diy | project with arduino and cardboard | simple robot samurai face #arduino #arduinoproject #robot
YouTubeMxengineer
20.8K views1 week ago
Learn Arduino by practicing in this simulator 🎁
0:25
Learn Arduino by practicing in this simulator 🎁
YouTubeAutomatismosMundo
158.2K views1 month ago
RFID gate opening project Arduino best for college school #project #school #college #diy
0:33
RFID gate opening project Arduino best for college school #project #school #college #diy
YouTubeSkynet Robotics
2.1K views1 week ago
Top videos
NDMA Tests Cell Broadcast Alert System | Why Did Your Phone Suddenly Beep Today? | How Does It Work
2:24
NDMA Tests Cell Broadcast Alert System | Why Did Your Phone Suddenly Beep Today? | How Does It Work
YouTubeUnacademy IAS: English
9.5K views1 month ago
How to Make a Security System 🔐 | Simple Alarm Circuit (Easy DIY!)
0:56
How to Make a Security System 🔐 | Simple Alarm Circuit (Easy DIY!)
YouTubeEnergy Tricks
37K views1 month ago
Alarm Clock in 1626 vs 2026 #shorts #alarm #history
0:12
Alarm Clock in 1626 vs 2026 #shorts #alarm #history
YouTubeOmnik
31M views1 month ago
DIY Arduino Projects
How to Make a Powerful Mini Survival Stove from a Glass Jar & Copper Pipe
3:00
How to Make a Powerful Mini Survival Stove from a Glass Jar & Copper Pipe
YouTubeBrain Inventor
682.4K views4 weeks ago
i made this for my mom & i'm obsessed! 😍
3:00
i made this for my mom & i'm obsessed! 😍
YouTubeBrooklyn B
342.1K views1 month ago
Easy DIY Garden Ideas Anyone Can Make at Home! 🪴🌹🌿
0:25
Easy DIY Garden Ideas Anyone Can Make at Home! 🪴🌹🌿
YouTubeIder Alves - DIY Moda Fashio
7.8M views1 month ago
NDMA Tests Cell Broadcast Alert System | Why Did Your Phone Suddenly Beep Today? | How Does It Work
2:24
NDMA Tests Cell Broadcast Alert System | Why Did Your Phone Suddenly Beep Today? | How Does It Work
9.5K views1 month ago
YouTubeUnacademy IAS: English
How to Make a Security System 🔐 | Simple Alarm Circuit (Easy DIY!)
0:56
How to Make a Security System 🔐 | Simple Alarm Circuit (Easy DIY!)
37K views1 month ago
YouTubeEnergy Tricks
Alarm Clock in 1626 vs 2026 #shorts #alarm #history
0:12
Alarm Clock in 1626 vs 2026 #shorts #alarm #history
31M views1 month ago
YouTubeOmnik
iOS Alarm Sound Evolution #apple #iphone #ios #alarm #sound #evolution
0:51
iOS Alarm Sound Evolution #apple #iphone #ios #alarm #sound #evolution
294.9K views1 month ago
YouTubeTabTUNE
Fire Detection System Using IR Sensor | Easy Electronics Project #techshorts#dilveersingh
0:13
Fire Detection System Using IR Sensor | Easy Electronics Project #techshorts#dilveersingh
15K views1 month ago
YouTubeEC short lab
How Many Alarms Does It Take To Break An IPhone? #shortsfeed
0:39
How Many Alarms Does It Take To Break An IPhone? #shortsfeed
31.5K views1 month ago
YouTubeZ-ZekLegacy
Why Did Your Phone Suddenly Beep Today? NDMA Tests Cell Broadcast Alert System | Chethan N
0:53
Why Did Your Phone Suddenly Beep Today? NDMA Tests Cell Broadcast Alert System | Chethan N
34.3K views1 month ago
YouTubeUnacademy IAS: English
0:07
How To Make Rain Detector Project|| Easy Sciece Project #science #diy #shorts
35.5K views1 month ago
YouTubeMr. Deeps
1:21
Air Raid Siren Sound Effect 🚨 Realistic Emergency Warning (1:20)
47.3K views2 months ago
YouTubeharathomsc
0:16
RED ALERT 🚨 न्यूक्लियर सायरन (Nuclear Siren) | इमरजेंसी चेतावनी अलार्म Sound
43.5K views1 month ago
YouTubeharathomsc
1:10
Smoke Detector Aag Ko Pehle Kaise Pakad Leta Hai?! 😱🔥 #Shorts
7.1K views1 month ago
YouTubeBe the Perfect
0:04
Fire detector #shorts #scienceproject #experiment #electronics
1.7M views1 month ago
YouTubeTech Ideas
0:48
Die Ursprünge von Deutschen Meme-Sounds🇩🇪(3)
63.7K views1 month ago
YouTubeUrsprung Erklärt
0:35
3 Cool Alarm Clocks That Will Blow Your Mind 💥 #shorts #alarm #viral
26.4K views1 month ago
YouTube2X GADGETS PRO
0:27
🚨 National Emergency Alert Issued – Stay Safe #funny
25.3K views1 month ago
YouTubeRohitSharma9251
0:13
Water Glass Level Indicator with LED & Buzzer System ❤️💡❤️ #waterlevelindicator #shorts #diy
127.9K views1 month ago
YouTubeScience Ideas 101
0:49
💥Top 3 Craziest Alarm Clocks Ever Made 🤯#alarmclock #tech #shorts #viralshorts #gadgets
3.6K views2 weeks ago
YouTubeFliki Gadgets
0:33
The FIRE ALARM Alarm Clock! | The LOUDEST Alarm Clock Ever! ⏰
33.7K views1 month ago
YouTubeS.E.R. Safety
1:16
Government Emergency Alert 🔔 Why Your Phone Suddenly Rang? | Cell Broadcast Explained
47.2K views1 month ago
YouTubeLet's Crack UPSC CSE Hindi
See more
Static thumbnail place holder