• HowTo add Ambient Temperature to your PVoutput.org graphs

Adding a Wunderground weather station enables live temperature data to be combined with your live generation or consumption data. Read more...

• I'm using SQLite, but I'd like to change to MySQL

Migrating your data from SQLite to MySQL is easy. Execute this command:
Linux: sqlite3 SBFspot.db .dump | grep "^INSERT INTO" | sed 's/"//g' | mysql -u SBFspotUser -p --database SBFspot
Windows: TODO

• I have a server running MariaDB, can I use this one?

Yes, MariaDB is a "drop in" replacement for MySQL. SBFspot/MySQL will run without issues with MariaDB.