New I2C sensors supported

[PaddyB]

Did you also create the actual influx database, in your case "boatDB"? 
You need to do this only once in the lifetime of your raspberry Pi.

1. Open a terminal window and enter command: influx
   
2. influx has a help built-in: HELP
   
3. Create your database: CREATE DATABASE boatDB
   
4. Check if your new database is indeed created: SHOW DATABASES
   
5. Exit influx: exit
   

There's actually no need to do that, put a database name in the influxdb writer plugin config and if it doesn't exist the plugin will create it in influxdb and start writing to it.

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Yes, indeed ! How can I fill this info ? and where do I find it ?

Server>plugin config.
Same as in the screenshot.