Hello,
I build a tracing device using Arduino Mega .
The tracing switches on when the outside temperature is below 0°C .
I use a DS18B20 to measure the outside temperature .
Because , when I put on the lights in my garage where the Mega is mounted, the temperature goes to -127 for a moment I want to change the softwarif (sensors.getTempCByIndex(0) < 0){ /
merker4=true;
lcd.setCursor(4,1);
lcd.print("1");e from:
to:
if (sensors.getTempCByIndex(0) <0 && sensors.getTempCByIndex(0) > -30){
merker4=true;
lcd.setCursor(4,1);
lcd.print("1");
This does not seem to work .
Can anyone tell me why this does not work ?
Th intention is that only when the temperature is between 0 and -30°C merker 4 becomes true .
Regards and many thanks .
Jan