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This question is an exact duplicate of:

Can anyoe teach me how to convert this into light activated switch (https://i.stack.imgur.com/r6lZH.jpg)

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marked as duplicate by Chris Stratton, Dave Tweed Jan 2 at 18:57

This question was marked as an exact duplicate of an existing question.

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Switch the LDR and 4.7K resistor.

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  • \$\begingroup\$ Is that all? Thank you sir :) \$\endgroup\$ – Delion Jan 2 at 6:37
  • \$\begingroup\$ Sir 4.7k or 47k? And which one? \$\endgroup\$ – Delion Jan 2 at 6:42
  • \$\begingroup\$ 4k7 means a 4.7k resistor. \$\endgroup\$ – Gonzik007 Jan 2 at 18:14
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Pin 6 is floating.. connect pin 6 with pin 2. (By doing so you are connecting inverting and non-inverting comparator together.

and change the 4.7K resistor with 1M ohm variable resistor .

Slowly change the resistance and adjust the sensitivity based on your ambient light.

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