龍捲風

The same circuit on breadboard. This enables me to swap components with different values to…

I drew this circuit using Fritzing’s PCB view. The result: The problem with this circuit…

I got this diagram from https://www.instructables.com/10-Year-LED-Flasher/. There is another from https://www.hackster.io/simpletronic/10-year-led-flasher-398282 but I tried on…