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fast blinking led with chargeable battery 9v with solar for charging Answered

anybody here know's how to make fast blinking led with chargeable 9v battery with solar for charging the battery? can you give me a list of its electronic components and its diagram? thank you


4 Replies

iceng (author)2018-01-09

Here are several flashing LED schematics, pay attention to the first as it can run on your 9 volts too....

Click the pics to see the whole image !

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dangzching (author)iceng2018-01-15

i've tried all the previous diagrams that you have been sent but no one has the capacity to blink. yes, the led was lighting but no blinking. :-(

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Downunder35m (author)2018-01-09

Did you do some math first or at least a Google search?
I made a joule thief that runs a LED for weeks on a single AA battery....
Making it blink is not much harder...
Question is if you can make it with a 9V battery.
They are good for things that don't really require power, so you blinking circuit must be able to provide the power for the LED from a capacitor discharge.
Blinking frequency will ffect the runtime as the battery discharges.
Also leaves the question if your panel is able to charge the battery in time.
Of course undervoltage protection is a must have too here....

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rickharris (author)2018-01-09

how fast is your idea of fast?


Many 555 timer ccts here

The 555 is good up to 15 volts supply so just put rechargable batteries in place of the indicated battery.

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