How to make a secret door / bookcase

How to make a secret door / bookcase

Hey I’m Bob and I like to make stuff, today I’m gonna make a bookcase that’s also… a secret door To allow the cabinet to swing out, what you see from the outside has to be larger than whats on the inside So I made a face-frame out of one by pine These pieces are

Arduino ultrasonic security system and if/else training IN HINDI

Arduino ultrasonic security system and if/else training IN HINDI

hi guys, extremely sorry im too late but I have a reason for that i found a deal for u OK SO there must be some students who dont have an arduino or ultrasonic sensor or other thing so, this deal is for those students so the promocode in the discription u want to give

How to make Amazing IR Photo diode Security Alarm System at home | Educational DIY Kit by techBerri
Burning Stuff With 2000ºF Solar Power!!

Burning Stuff With 2000ºF Solar Power!!

In a previous project I found a free tv and turned it into a giant solar scorcher. This shoots out a deadly beam of sunlight, that’s hot enough to abuse food, melt metal and burn things you probably shouldn’t. Today seemed like a good day to play with my Solar Scorcher. I positioned my frame

How To Make A Laser Light Security Alarm System || DIY Ideas || Ideas Factory
1st place Egg Drop project ideas- using SCIENCE

1st place Egg Drop project ideas- using SCIENCE

so my favorite class in high school was physics it opened my eyes to the fact that we can understand and predict so much of the everyday world around us using math and equations so today i wanted to revisit the classic high school physics egg drop competition where you have to build some sort

Arduino Security and Alarm System | Project SECURE