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