Answer by Majenko for Do I need a pull-up/down resistor for button LED circuit?
No, you don't.The thing to remember is that you don't put a pulldown (or pullup) resistor on the button - you actually put it on the input.And since you aren't using an input there is nowhere to put...
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Answer by CrossRoads for Do I need a pull-up/down resistor for button LED...
A series resistor is needed to prevent excess current thru the LED or thru the IO pin. 270 ohm to 1K ohm works well.simulate this circuit– Schematic created using CircuitLabThe internal pullup in the...
View ArticleAnswer by jose can u c for Do I need a pull-up/down resistor for button LED...
The circuit you have made is only using Arduino as a 5V power source. You aren't using any GPIO pins to read the state of the button or to control the LED by an output pin. You've just made a plain-old...
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Do I need a pull-up/down resistor for button LED circuit?
When reading up on how to make a circuit that turns an LED on when a button is held down, I keep finding people saying a pull up or down resistor must be involved, to avoid the flickering state of the...
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