I'm wondering if I can load a LED with a 2.2K resistor tied +5V and other side to a SW & Arduino?

Opposite side of SW to GND.

Will this set pp damage my MEGA 2560?

I can save a lot of Arduino pins doing things this way.


closed with the note: arch
Nov 5, 2019 in LEDs, Digital Output by

1 Answer

Hi Harry,

I have added the page on the SimVIm blog with explanation of the position indication type you have suggested:



May 7, 2020 by anonymous
Thanks Vlad for the diagrams.
Thanks Vlad, very helpfull.

Bernie Neuhausen