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What Do I Need To Change In Order To Run This Circuit With a Button Cell and a Momentary Switch? Answered

I'm trying to do a modification to this project here. I need to replace the 9v battery with a smaller one, probably a button cell or similar, and the slide switch with a momentary one. This is my first real electronics project, so I'm not sure how those changes might affect the rest of the components. Do I need to swap out any of the materials listed in the Instructable to make that work? (Besides the obvious momentary switch, button cell battery, and battery holder)

I asked there, but I've yet to get a response and thought that maybe this would be quicker.

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Downunder35m
Downunder35m

4 years ago

If you want to use only button cells I strongly recommend to use LED's for solar garden lights.
They only use a fraction of the power compared to standard ones and are still quite bright.
The big 10mm white ones are really good.

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rickharris
rickharris

4 years ago

For the most part you can run a single white LED directly from a 3 volt button cell with no resistor. Something of a special case for many reasons.

https://www.instructables.com/howto/LED+throwie/

The switch will depend on how you intend to use this. a momentary switch will only operate the LED whilst it is pressed.