by one or in a flip flop manner. A 100K variable resistor is used to adjust the flashing rate per second. The circuit can be operated with a 12 volt battery or power supply.

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Here is a project of a 555 flip flop LED circuit. The circuit is able to blink 24 super bright white LEDs. The circuit is build around a famous 555 timer IC which is wired as an astable multivibrator here. The LEDs are divided in two pairs and each pair contains 12 LEDs. The 555 IC will blink each pair one

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555 Flip Flop LEDs