All of our homes have outdoor lighting at night. But we often forget to turn it off in the morning. In such cases, the current bill may increase. But if you can use a technology that turns on and off the light automatically at the right time, it will definitely be very useful. Here’s how to set up an automatic light that turns on and off automatically in this way using only one circuit at a very low cost.
The main requirement for such a project is a 12 volt relay. It only costs between Rs 10 and Rs 15. A transistor called N7000 is required. 470 ohm resistor, an LDR, which is a full form dependent resistor. It works by depending on the light. A 9 volt battery and connector.
How to make Motion Sensor Light
First take the 12v and connect it between the first and third leg of the three leg section. It can be used with 9 volts to 12 volts. Then connect the third leg of the transistor to the third leg of the relay coil. It needs to be soldered and welded. Connect the third leg of the resistor to the center leg of the transistor. Take the resistor and connect the first leg of the resistor. Then connect it to the battery circuit. Connect the battery terminal to the third leg of the positive relay. Solder and fasten the negative side as well.
This only happens to them when they get light to the circuit. The system will shut down when the light is off. It can then be connected to the light relay as well. The second wire is to be provided at the center of the 3 leg. Then solder and serve. Main power is neutral and the main phase only passes when the relay is activated. Power is only available when the LDR is on.This way you also can make a light system.