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
Related Products
Self Monitored Alarm Systems
Monitored Alarm Systems
IP Alarm Monitoring
#best
ఇలా కూడా జీతం కట్ చేస్తారా మహాప్రభూ #brahmanandam #venkatesh #comedy #shorts #ytshorts #teluguone
ఇలా కూడా జీతం కట్ చేస్తారా మహాప్రభూ #brahmanandam #venkatesh #comedy #shorts #ytshorts #teluguone
YouTube1 week ago
Badi Ball Arhi Hai ⚽️😱😂 Part-4 |#shorts |#trendingvideo |#trending |#fabhai
Badi Ball Arhi Hai ⚽️😱😂 Part-4 |#shorts |#trendingvideo |#trending |#fabhai
YouTube1 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 Alarm Systems
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
0:22
i'm awake but at what cost 💀 #wakio #wakioalarm #sleeping #alarm | alarm
306.2K views2 weeks ago
TikTokkuyajp.wakio
1:01
Changer sonnerie iPhone 🔥🤍🤙 #pourtoisenegal #videoviral #abonnetoi #videos #partage @@ @𝓡𝐀ŜŜ𝐎υⓁ 𝓳𝐎𝐎ρ𝒆υｈ⍟ @𝓡𝐀ŜŜ𝐎υⓁ 𝓳𝐎𝐎ρ𝒆υｈ⍟ @𝓡𝐀ŜŜ𝐎υⓁ 𝓳𝐎𝐎ρ𝒆υｈ⍟
21.7K views2 weeks ago
TikTokrassoul_joopeuh1
0:04
Fire detector #shorts #scienceproject #experiment #electronics
1.7M views1 month ago
YouTubeTech Ideas
0:05
Maior falta de respeito do mundo #fyp #alarme | Alarmas Para Despertar
3.5M views1 month ago
TikTokdanieuuu_
2:57
🚨🚨🚨ALERTA🚨🚨🚨 #comedia #backdoorhumor | alarm saying front door
2.3M views1 month ago
TikTokbackdoor_humor
1:15
Compactible con la mayoría de vehículos americanos #luchitopineda52 #seguridad #alarams #chevrolet #gmc @Transformers Car audio
37.4K views3 weeks ago
TikTokluchitopineda52
0:11
This alarm app actually work tho😭#alarmclock #snoozing #productivity #morningperson
10.4K views2 weeks ago
TikTokwakeup.by.bri
1:50
Man Bypasses Cameras, Lasers & Vault Alarm: Ingenious Heist Tactics
5.9M views1 month ago
TikTokkangaroo_talk2
See more
Static thumbnail place holder