I had wanted to set the 555 up as a flip-flop, to act on a low voltage signal from an IR receiver.
This worked out ok, in as much as the 555 part is concerned - it dutifully accepts the signal on its RESET and TRIGGER pins and flips and flops to my heart's content.
But silly me hadn't thought it through, if at all, and so as I hooked up the two 555 input pins to the same single pin on the receiver, when the receiver takes and infrared hit it sends a low voltage signal out on both 555 input pin lines and thus the 555 first flips - and flops right back again. Like this - http://upload.wikimedia.org/wikipedia/commons/7/78/555_Bistable.svg - with the RESET and TRIGGER pins bound to the same input signal... Not my proudest moment!
What I was aiming for is some kind of way to have the single IR receiver low-signal make the 555 flip if it's been previously flopped & flop it's been previously flipped...
Can a helpful soul point me in the right direction? Hopefully one that won't require any use of a microcontroller... Maybe there's a good and proper IC that'll do this for me,in which case I'll be very happy to learn about it. Maybe it's all basic electronics, of which my knowledge is still in learning by tutorials-mode. It needs to be a stable solution, though - can't rely on capacitors to flip or flop on a timer-basis.
Many thanks in advance!