When fridge is refrigerating, we can use the acoustic sensor to detect the working time, subsequently know the working qualification of each fridge(To be honest, we tried to calculate the time by our ears......).
The Network Condition
Also, the network connection is not stable and the material provides only the guidance to UDP connection. We can try to use only TCP connection to send data and skip the dynamic csv file
Research On Food
If we have enough time. It will be more interesting to check the influence of temperature and humidity on different kind of food.
Run Without Computer
To make the XDK tool upload newest data directly to cloud. Then we don’t need computer to load data to the AWS dynamoDB.