I am using a GeekPi 8 digit, 7-Segment display in my project controlled by a Nano.
I wanted to turn off the display, without turning off the Nano, when the game is OFF.
So, I placed the +5V across a N.O. contact on my "START" relay.
When I turn the game off. The display dims somewhat, but the digits remain illuminated.
Even if I disconnect the Power to the display the numbers remain.
I guess I'm getting a signal from the Nano through the CS, DIN and CLK pins.
Is this normal?
DO I have to turn off the Nano in order to turn off the display?