This simple Door Chime protects the door and gives a loud Alarm tone when there is an attempt of theft. The circuit is too simple and battery operated. A Normally Closed (NC) reed switch and magnet is ...

Now you can build your own simple door alarm security system using a tiny microcontroller chip PIC12F635! The circuit is nothing but an aural alert unit, which raises ...

Three factors will stall dementia and the aging process, according to new U.S. study Former Treasury Secretary Larry Summers ...

A simple, cost-effective, and reliable security alarm system that triggers when a door or window is opened, using a magnetic reed switch without the need for a microcontroller. 🚀 Project Overview ...

As California highway slides toward sea, the fix will take billions $2K tariff checks would go to ‘working families’: Bessent ...

In the CBBC series The Dumping Ground, Izzy, Dita and Erin use the BBC micro:bit to create a radio door alarm to monitor the door to their secret den. They set up a trap as they want to find out who ...