I'm new to arduino. I was making a circuit like this one (using tm1637) and I connected the switch to ground, after some seconds the whole circuit turned off and now when I connect the arduino uno R3 to my PC the ON LED activates for a second before turning off, and it's not being recognized anymore in the IDE. What can I do?
if you really shorted 3.3V to GND and into a pin you might have damaged (killed) your board... It can no longer be trusted
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Welcome, sorry for the potential bad news but it is a good post you included a diagram. Disconnect everything and try to see if it will be recognized by your computer but do this after you power cycle the computer. If it does not come back your Arduino is a crispy critter.
Next time you connect a pushbutton, connect it diagonally across button from the D pin you want and then to ground, and use
pinMode(buttonPin, INPUT_PULLUP);
and reverse the logic of your buttonState calls for said button. It's the fastest, safest way to connect a pushbutton to Arduino in the opinion of most users, it seems.
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