This is a simple matter of changing one line. Our sensor outputs 10mv per degree centigrade so to get voltage we simply display the result of
getVoltage(). Delete the line:
temperature = (temperature - .5) * 100;
Again this is a simple change requiring only math. to go degrees C -> degrees F we use the formula:
( F = C * 1.8) + 32 )
Add the line:
temperature = (((temperature - .5) * 100)*1.8) + 32; before
Lets add a message to the serial output to make what is appearing in the Serial Monitor more informative.
To do this, change this line:
Then, we add another line with informative text about the temperature on a new line:
Serial.println(" degrees centigrade");
The change to the first line means when we next output it will appear on the same line.
If you ever wish to output a lot of data over the serial line time is of the essence. We are currently transmitting at 9600 baud but much faster speeds are possible.
To change this change the line:
Upload the sketch turn on the serial monitor, then change the speed from 9600 baud to 115200 baud in the pull down menu. You are now transmitting data 12 times faster.