Sometimes when we reach home in the night it’s hard to unlock the door lock, as we are not able to find the keyhole because of darkness. So, to get rid of this problem there are many keyhole lighting ...

In the current century, automation is seen to be implemented in almost everything. Automation systems are being installed in offices, homes, shops, markets, workplaces, etc. In this race of technology ...

There are a wide range of applications for light sensitive switches: lighting, entrance door, automatic staircase, automatic opening of doors to the action of a ray of light, alarm systems, etc… Many ...

Often streetlights remain on till late in the morning and are not switched on as soon as it gets dark. This circuit will automatically turn off a streetlight at dawn every morning and switch it on ...

This light chaser circuit (music-operated lighting effect generator) comprises five sets of 60W bulbs that are arranged in zig-zag fashion. The bulb sets glow one after another depending on the ...

Living objects with a body temperature above 0°C emit heat as infrared radiation, also known as thermal radiation, which is invisible to the human eye. PIR sensors, designed for this purpose, can ...

The article is being published in collaboration with JLCPCB. They supply high quality PCBs at a very reasonable price. They also can provide SMT circuit assembly. We ...