This luggage or bike alarm can be used while travelling by trains or bus and we generally lock our luggage using a chain-and-lock arrangement. But, still we are under tension, apprehending that ...

General purpose hobby circuit of a simple light fence security beeper is presented here. This circuit can be used as a door alarm, gate alarm, pathway alarm, etc. Any 12 Volt dc power supply can power ...

Learn how to make a simple door alarm to enhance your home security with our step-by-step guide. This DIY theft alert alarm ...

Learn to recognise different circuit symbols with these interactive learning resources for KS2 Science students aged 7-11 from BBC Bitesize.

It’s what we wish our simple circuit diagrams looked like. We like it. Posted in Hackaday Columns , Reviews , Slider Tagged arduino , basic connections , beginner , fritzing , tutorial ...