I just got my first arduino starters kit so I'm a total noob in it. My simple LED blinker did work, afterwards I used a switch button with a debouncer script. It worked like I wanted but I wanted to try a buzzer instead of the LED, which did not work. Afterwards when I put the LED back in it didn't work anymore either.
The onboard LED does still work. Does this mean my breadboard had a short circuit? Is there any way I can know this for sure? And what exactly went wrong? Did I have to use a higher resistor?