The 555 box also features a sliding interlocking mechanism for opening and closing the lid.

There are two status LEDs which indicate SET and RESET condition of the SR flip-flop.

SET - Q is high - RED led lights up

RESET - Q~  is high - GREEN led lights up

Video contents:

All detailed working modes with output signal on oscilloscope.

0:00 Build steps slideshow
4:20 Preparing to test it on breadboard
5:05 Working demonstration videos : Mono-stable, Bi-stable, A-stable modes

This circuit is fixed inside a Handmade wooden box shaped like a DIP-8 IC which i made.

Painting the box :

Fitted the discrete circuitry inside: