PCBX

Poor man’s 433MHz RF Sniffer

Nowadays minuscule 433MHz RF modules are used in a wide variety of applications that require wireless control, and are very popular among the tinkerers because these modules are very cheap and can be interfaced easily […]

What is GPS and How does it work?

Introduction Have you ever thought of locating yourself on the blue planet (Earth)? This might be a tough question if you are residing in a new place. But don’t worry, the answer is simple, the […]

Safe Bathroom Lamp Controller

As you may know, bathroom is possibly the most dangerous area in your house when it comes to electrical safety because water is a sound electrical conductor. The consequence of an electric shock is far […]

Electronic Magnet Evaluator

Electronic Magnet Evaluator is a simple device incredibly useful for experimenters and students. With this little gadget one can not only detect the presence of a permanent magnet but also find out its south (S) […]

Security System with Voice Playback

This circuit is designed in response to a request made by my beautiful neighbor. What she desired was an inexpensive device to record and replay customized voice messages. Now it’s the frontend of her simple […]