This easy to built circuit produces a warning beep when somebody crosses a secure area in your home or place of work. The transfer, hidden […]

This is the light fence schematic diagram uses LDR as the light sensing. The fundamental issue with the greater part of standard light sensors is […]

Here the notebook anti theft protector circuit to secure your important netbook / notebook from stealing. Basically, this is a mini security alarm generator. Fixed […]

Here the circuit diagram of musical bell with touch switch and timer. This circuit is designed around CMOS IC CD4011 which work as the delay […]

This is the ‘special’ circuit design of power supply failure alarm. The vast majority of the power supply failure alarm / indicator circuits require a […]

This is the shutter guard circuit which has sensitive vibration sensor, piezo-sensor. This circuit is specifically designed for outlets to defend towards theft. It can […]

This is the circuit diagram of staircase light with automatic switch off. It based on timer which is can be adjusted with the needs of […]

This is simple to build and cheap motorcycle alarm circuit which could be fitted in motorcycles to take care of them from getting stolen. The […]

This is the fire alarm circuit which use LDR to sense the smoke from the fire, so it can be used to detect any dark […]