Garden/Greenhouse monitoring

[davidf]

I was re-reading your original comments. Since you aren't going to have a lot of sensors, you can probably just use a single Arduino with sensors wired to it, and then get data from it via USB (12 feet is reasonable for USB).

I think you can probably read the data to the Rasperry Pi over USB from the Arduino. For longer distances you could use a simple serial connection (RS-232) - you might need to add some additional circuitry but nothing too difficult.

As long as you don't need a 'star' configuration where you have one base station with a bunch of data collectors (Arduinos) off of it, you can use point-to-point serial communications just fine. Data-rates are still measured in kbps for serial.