I have connection to the DB!
I'm using this statement:
select id, ea1, timestamp from valores;
But seems not to work. I get an error refearing an excesive package size.
If I use this statement:
select id, ea1, timestamp from valores limite 1;
I do get a value.
As explained in the on line doc, id is a row id, ea1 a value and timestamp the time the value was recorded.