World's most basic button circuit question.

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6

Lefty: you'll be happy to know that I just ran out and bought a digital multimeter. And yes, now I know which leads are connected. :slight_smile:

Grumpy: In my original post I said

I expect the LED to be off by default and on when I push the button.

I also said

I have 5V going through a 330 Ohm resister that goes into a lead of a push button. The other lead of the button goes into the + lead of an LED. The - lead of the LED goes directly into GND on the Arduino.

I guess I should have been more clear... the 5V is connected directly to the Arduino's 5V pin.

If I remove the button the LED stays lit (as you'd expect).

Thanks,
LT