Tent Monitor is an Android app that uses a MySQL database, a PHP web service and an Arduino microprocessor to collect and present environment data.
The Arduino collects temp and moisture data every minute from two sensors (internal and external) and using a WIFI connection, securely posts the data (ssl) to the php based web service. The web service stores the data to the MySQL database.
The Android app requests data from the web service (using it's internal hardware ID) every 15 minutes and stores a maximum of 12 hours of data in Shared Preferences.