The low power LED flasher by ICM7555 Normally, when you need to use LED display status of the battery 6V-12V. Just add a resistor in series only. It is easy and saving. But not cool and consumes more power. - The impression of a bright that continuously. I think that did not noticeable it. - When the LED light as well So consumes too much energy. Although the LED need voltage is 1.8V only, but it uses too current is 15mA-20mA. A wise choice. - The LED flashes very prominent. - Find out how to use current less than 1mA. When several ten years ago. I’ve used a LM3909 of LED Flasher/Oscillator IC. (View circuits that using this IC number.) It is built for a particular flashing light or low current led flasher so easy to make and includes a very small amount. But unfortunately. Now IC manufacturers stopped producing [...]

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