Asked
— Edited
Can any one answer why when I connect the D2 5V to the D2 Signal the read digital control turns green indicating an on position. I immediately break the connection disconnecting the D2 5V and D2 Signal and the control stays green/on for an unknown period(approx 18 seconds) of time then goes red?
Interval is set to 100 milliseconds...
Why doesn't it go red the moment the connection between 5v and signal is broken?
I've visually inspected the underside of the board with a magnifying glass and all looks normal is this some kind of manufacturing defect or am I not understanding some basic electronics concept?
Any commentary on the above posts would be appreciated....
A pull-down or pull-up resistor is necessary for switched and reading digital