certo che e' possibile aggiungere sensori
Add more sensors (or outputs)
The I2C bus (SCL and SDA signals), along with
regulated 3.3V are brought out to the JP7 expansion
connector. You can use these lines to add additional
I2C sensors if desired. And don't forget that the ISP
header provides a few more processor pins that may
be useful for additional inputs or outputs.