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Here you can learn how to make a Darkness Sensor with just few cheap parts.

It´s really simple and easily made by yourself.

Step 1: List of Materials and Schematics

What you´ll need:

Powersource

Jumperwire

1 or more LDR

LED

Potentiometer

Plug everything together like shown on schematics and test it.

Step 2: ... Make It More Accurate

You can make the Sensor more accurate by adding LDR.

By adding the LDRs you make the potential resist bigger so the LED dimms

over a more wide range.

About This Instructable

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Bio: I like to get back to the technical roots and try to make things without getting too complicated. Thanks for feedback https://www.youtube.com ...
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