I used Falstad curcuit simulator (https://www.falstad.com/circuit/circuitjs.html https://www.falstad.com/circuit/circuitjs.html) to try out some subcircuits (mo

I used Falstad curcuit simulator (https://www.falstad.com/circuit/circuitjs.html https://www.falstad.com/circuit/circuitjs.html) to try out some subcircuits (monostable, for example) and then tried them out on a breadboard.