Can you grab & print millis before and after this statement:
temp=sensors.getTempCByIndex(0);
and see how long it takes. If your mysterious display device really needs continuous refresh, it may be the culprit in causing the black spot.
Can you grab & print millis before and after this statement:
temp=sensors.getTempCByIndex(0);
and see how long it takes. If your mysterious display device really needs continuous refresh, it may be the culprit in causing the black spot.