Good Morning Alarm

Good Morning Alarm

In this article, we shall learn about a simple circuit using light sensor LDR (Light Dependent Resistor). You may be surprised to know that we can sense light and incorporate electronics in our day to day life by using very simple and easy to handle components....
Water Alarm

Water Alarm

We have read about conductors and insulators and performed an activity to identify them in a previous article. Here, we are going to discuss a circuit which acts as water sensor by using the fact that water is a good conductor of electricity. This circuit can also be...
Automatic Night Lamp

Automatic Night Lamp

In the earlier article, we discussed the circuit which used LDR (Light Dependent Resistance) to make Good morning alarm. With slight modification in the circuit, we can use an LDR to make automatic night lamp. The LDR senses the intensity of sound in the surrounding...