Archive: https://archive.today/B489c From the post: >>I love fireflies. But in recent years, they stopped coming for reasons I don’t know. No tiny, glowing dots in the dark like they used to. I miss them more than I expected. Few weeks ago, I decided to make my own fireflies. I discovered something called an Astable Multivibrator. It looked like magic to me TBH. A tiny circuit, with minimal components, that could automatically switch from ON to OFF and OFF to ON state (without an explicit “timer” component).