Connect battery to the battery clipper and observe that when light is on LDR sensor then LED is not glowing and when light is not on the LDR then LED is glowing.
Uses : We can use this circuit as a street light because it will automatically ON and OFF.In the morning when light will come on the LDR then LED will not glow and in the night light will not be fall on LDR then LED will glow in the night and vice versa.
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Start making the base for our street light. The base for our automatic street light will be a 10cm * 8cm * 5cm size box.
Take a corrugated sheet of the size 20cm*20cm. (Fig 1)
Note: You can even use normal cardboard to make the base instead of the corrugated sheet.
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Mark a rectangle of 10cm * 8cm in the center of our sheet, this will make the making of the box easier. (Fig 2)
Just remove the corners and your sheet will look like Fig 3. You will notice that the two side edges out the four edges are 1cm bigger, cut those 1 cms off to make it equal from all the sides.
Note: Keep one of the corners for making the head portion of the street lamp.
Fold along the markings done using a ruler. And glue them together using hot glue.
With this, your base of the street light is completed. (Fig 4)
If you want to learn more, please visit our website automatic street lighting system.