The Mega has 16 analogue pins. I think the DS18B20 is only good for -25, so you need to check that. If it is OK for that, the DS18B20 is a good choice as it s easy to work with, getting decent accuracy over a wide range.
The Mega has 16 analogue pins. I think the DS18B20 is only good for -25, so you need to check that. If it is OK for that, the DS18B20 is a good choice as it s easy to work with, getting decent accuracy over a wide range.