555 Timer Circuits(555-timer-circuits.com)21 points·by _Microft·há 4 anos·2 comments555-timer-circuits.com555 Timer Circuitshttps://www.555-timer-circuits.com/2 commentsPost comment[–]IRP·há 4 anosreplyDidn't know this circuit was still around. Good memories. And fun projects![–]gecko_·há 4 anosreplyIf you browse hackaday.com (a hardware tinkerer site), a running gag is "could have been done with a 555 timer though".