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11 Discussions

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Ploopy

5 years ago on Introduction

I made my version of this ible

https://www.instructables.com/id/Dark-Activated-Night-Light/

hope you like it

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Ploopy

5 years ago

Made one!

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Ploopy

5 years ago

Why do you need a resistor for the led if you're using 3v?

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mariollop

7 years ago on Introduction

does it matter if its a pnp or a snp transistor?, i did the hook up w/ supply voltage 2 aa batt. 1.5 each and does the size of the eldr matter?

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__DELETED__mariollop

Reply 7 years ago on Introduction

I haven't heard of an snp transistor....

As far as I know the size doesn't matter, but the one I used was about 4x5mm

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__DELETED__mariollop

Reply 7 years ago on Introduction

I don't honestly know the difference between the two.

Sorry for being useless >.<
I'm just a beginner in electronics really...

Thanks for checking out my 'ible though :-)

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ledfreak01__DELETED__

Reply 5 years ago on Introduction

an npn transistor means it needs a positive volt to turn on and a pnp transistor needs a negative volt