Light activated LED

[krisferrari]

I did follow an youtube video - which turns led on when photorestistor is blocked (dark)

But I want the opposite i.e. turn LED when there is more light. Can you suggest modifications to the above circuit

[paulpaulson]

Hello and take a look [here ](Transistor as a Switch Using LDR as a Switch Using LDR A light-dependent,resistance increases%3B however in light%2C its resistance decreases.)

[krisferrari]

paulpaulson:
Hello and take a look [here ](Transistor as a Switch Using LDR as a Switch Using LDR A light-dependent,resistance increases%3B however in light%2C its resistance decreases.)

This is my current working scenario...so not what i am looking for

[anon73444976]

We can't see your code or your schematic

[Idahowalker]

Post your code, in code tags, with your best attempt and you might even get someone just to write the fix for you.

[paulpaulson]

krisferrari:
This is my current working scenario...so not what i am looking for

Did you have read it complete ?
Or you would like to do this job by an Arduino ?

[DVDdoug]

This is my current working scenario...so not what i am looking for]

You didn't show a schematic, but it looks like your circuit doesn't match the example schematic. (Your LED is on the ground-side.)

But... Swapping the 10K resistor and LDR will "reverse the logic".

[krisferrari]

Assume LED is connected from emitter to Ground. Tried to draw using blue

No arduino

Swapping the 10K resistor and LDR will "reverse the logic".

I did try - 2k resistor from positive to ground , and photoresistor from Ground to positive...Didn't work

[krisferrari]

Fixed.

Removed Resistor for LED!

5v to photoresistor, ground to 2k resistor and transistor

So now ground is flowing to emitter!!

[I think 100 ohm resistor was the cause for my initial try]

thanks all