Dear all, Recently I am planning to use attiny 85 powered by a CR2032 coin cell battery to light up some LEDs randomly. I tried to connect them but it seems that the LEDs is actually not that bright. Any problems/solutions ?

Attiny 85 with 3V CR2032 Coin Cell Battery

knut_ny February 9, 2014, 2:05pm 4

you may even do with a coupe of germanium diodes and capacitors.. Use two outputs to make AC
see

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