I have a 2560 with a PB between 5v and a pin 40. The PB when pressed should turn a LED on. When PB is not pressed and place my finger close to the wire connected to pin 40 the led begins to flicker indicating I need a pull-down resistor. Add a 10K resistor everything works as perfectly. The docum…

Mega 2650 and pull-down resistor questions

Topic		Replies	Views
Pulldown su pin input. Generale	15	8629	May 7, 2021
internal pulldown resistors? Interfacing	12	168707	May 6, 2021
Arduino Internal Pull-up Resistors. Interfacing	9	9568	May 6, 2021
[SOLVED]Difference between INPUT_PULLUP and an external pull down resistor? General Electronics	8	13833	May 6, 2021
pull-up vs pull-down resistor Interfacing	7	17876	May 6, 2021