| To implement a modular alarm, no matter if it is for a single house or for a business or restaurant, William Pretty’s recently published boo...
More about Alarm (115)
| Reliably detecting human presence is not easy. The HLK-LD2410 sensor uses 24 GHz frequency-modulated continuous wave (FMCW) radar technology...
| Have you seen the movie "Mission Impossible” with Tom Cruise? Would you like to know how to catch him with a $40 sensor? Try building a high...
| A reliable human presence sensing with a 24GHz Radar module
| Today, many burglar alarms are wireless making them easy to install. The downside is that every sensor needs a battery that will eventually...
| Not easy to disable and with a dual alarm loop. And stil with few components.
| Is the fridge door closed? This alarm helps you fight such wasteful situations as it will let you know when the fridge door remains open for...
| This project has been triggered by the challenges being experienced by fridge operators, where sometimes they might think that they have clo...
| Am going to show you how to design and simulate a fire alarm system using the Proteus EDA where we shall be using the 8051 AT89C51 microcon...
| Want a universal alarm? Engineer it yourself. The circuit in this article enables you to build a general-purpose alarm for a wide range of a...