If it can give ideas to some people, I leave it here
Considering that my greenhouse is at the other end of my land and that the electricity does not go so far, I have no choice to automate the control of my greenhouse on the 12 volts.
So I need solar panels to charge the batteries, so I searched quite a lot on the web and my choice stopped on the Arduino Sun Tracking / Heliostat Program (The Open Sun Harvesting Project)
"The Arduino Sun Tracking / Heliostat Program is a program for the Arduino that is able to control multiple types of sun tracking machines and heliostats. It is able to control not just one machine but several, each with its own set of design parameters. It has a myriad of other features as well such as manual control, stepper motor acceleration, and wind protection mode just to start.
To learn more about this program: https://www.cerebral...vesting-project and the discussion board "
It's good to follow the sun but you have to get the most from the solar panels, so I will add Arduino Based MPPT (Maximum power point tracking) Solar Charge Controller
for now i'm lokking at this project done by Tim Nolan
I need a weather station: Wind direction - Wind speed – Temperature – Humidity - Air pressure - Light levels - Rain gauge
it will be all homemade I will detail when I have some picture.
and now for the greenhouse: soil Temperature – soil Humidity - automatic irrigation - automatic roll up side - and more
if you want an ARDUINO MEGA 2560 REV3 got mines from Go Cyber Shooping at (US) $14.95