Introduction: 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.

Step 1: Parts List

Picture of Parts List

***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***

Banggood

555 Timer - https://goo.gl/EnswJk

8 Pin IC Holder - https://goo.gl/FLnYx8

LDR - https://goo.gl/G12VBp

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

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

AliExpress

555 Timer - https://goo.gl/6pWLT9

8 Pin IC Holder - https://goo.gl/HHdwv3

LDR - https://goo.gl/xX72SG

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

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

Amazon USA & UK

555 Timer - http://amzn.to/2x57Ez1

8 Pin IC Holder - http://amzn.to/2fYDmtw

LDR - http://amzn.to/2vRMXaZ

3 Pin Terminal Block - http://amzn.to/2yZwvnT

1N4007 - http://amzn.to/2zeIFKA

Amazon India

555 Timer - http://amzn.to/2uYlhCs

8 Pin IC Holder - http://amzn.to/2wpQpLx

LDR - http://amzn.to/2vRkdiz

3 Pin Terminal Block - http://amzn.to/2wMzIXh

1N4007 - http://amzn.to/2wMwN0H

Note: all the purchase links provided are affiliate links

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If you wish to support my work then you can do by using my affiliate links given below, this way i get small commission for your purchases.

Bangood - https://goo.gl/ZUhRmV

AliExpress - https://goo.gl/jioyhV

Amazon USA - http://amzn.to/2u7ztbP

Amazon UK - http://amzn.to/2wu4nYP

Amazon India - http://amzn.to/2hroLHz

Step 2: Circuit Diagram

Picture of Circuit Diagram

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

Step 3: Construction

Picture of Construction

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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Comments

ahmet_024102 (author)2017-10-11

amazing fann

tytower (author)2017-10-11

Instead of rehashing up stuff that has been done 20,000 times already on every place conceivable on the internet , why don't you try and develop this to be adjustable properly and be finely polished so it turns on exactly when we want it on . None do and you know yours wont also .The rest above is just click baiting to earn you money

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Bio: I like making new things from trash. For more cool content please subscribe to my YouTube channel @ https://goo.gl/BHxFf7
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