Anyone know of a web site where I can download a sketch for a thermometer that reads in Fahrenheit, and uses the i2c serial interface?
Which sensor are you using ? There will almost certainly be a library for it and the library will come with examples
Use a Celsius sketch, and convert.
Are we going to be talking about magnesium again? 
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sensor is DS18B20, using Arduino Uno, display 1602A.Iam new to Arduino not good at writing sketches yet.
Thanks Jeff
Which library have you tried ?
Forget the LCD, just use Serial for now, until you're sure you're reading the sensor reliably.
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