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Fritzing 9v power supply

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This way of charging NiMh or NiCd batteries is not very functional. Why we need a microcontroller to manage charging a battery? The answer is very simple … The most economic charger that on the market, regulate the charge based on a timer, that is if I charge a 2500mAh battery for example, they provide a charging current of 250mAh, keeping the charge for eg 14 hours (a part of the energy will be lost, so 10 hours would not be enough).

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And now another interesting little project.Īfter seeing various online projects, especially based on the PIC microcontroller, I decided to make a charger for NiMH batteries driven by an ATtiny85.

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