How to Make a Motion Detector Alarm Circuit

Although the motion detector alarm circuit enclosed here involves a pretty easy to build design, it is unusually more efficient than other similar circuits. The present concept works on the innovative principle of detecting light differences over a couple of sensors which may be created by a potential trespasser. The principle makes it free from the use of external special compatible light sources and enables it to be used with any incoming natural light irrespective of its varying intensities.