How to Make a Simple Dark Sensor Using 555 Timer

In this tutorial i will show you how to make a simple Dark Sensor using 555 timer.

To build your own Dark Sensor using 555 timer you can watch the video embedded in this step or continue reading.

***Parts List***

1 * 555 Timer

1 * 8 Pin IC Base

1 * LDR

1 * Green LED

2 * 3 Pin Terminal Block

1 * 470 Ohm, 1.5k Ohm, 5.6k Ohm, 15k Ohm

1 * 1N4007

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***Purchase or Affiliate Links***

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3 Pin Terminal Block - https://goo.gl/8B4rd9

1N4007 - https://goo.gl/4TQQjt

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3 Pin Terminal Block - https://goo.gl/unNiAk

1N4007 - https://goo.gl/Bs4nYt

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Note: all the purchase links provided are affiliate links

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I have shared two circuit diagrams : one with the pot & one without the pot

1. One without the pot : for this i determined the value of R2 by trial & error method. This value senses the dark exactly at the time of sunset

2. One with Pot : this gives you the option of changing the sensing according to your convenience at any given point of time

Now assemble the components on a PCB according to the circuit diagram and solder the components.

After soldering check the circuit & power the circuit

For the test results you can watch the video embedded in the first page or click here

Thank you for reading !!!

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