I have been testing the DS18B20 thermometer over the past few days. There are some drawbacks using the One Wire protocol (it's a bit complicated). I also had some issues turning off the DS18B20 to save power. The DS18B20 has a low standby mode of less than 1 µA but I wanted to turn it off completely which proved to be difficult. So I started looking for an alternative thermometer. After some searching I found the TSic 306 which turned out to be really nice. It is a pre calibrated digital thermometer just like the DS18B20 and also comes in a TO-92 package. It uses the much simpler ZACwire protocol to communicate with the micro controller. And it can be turned off completely between temperature readings to save power. Initial tests of the TSic 306 are looking good. Next I will have to come up with a setup to measure the temperature dependency of the load cell.