Hi Solarsan,
I see that you are advertising a solar tracker circuit.
For a solar tracker that you can make yourself I recommend not going over 2kW.
I have a simple double axis design and its the wind that is the limiting factor, as in Hurricane conditions, yes even here in France, for the wind loading for bigger trackers the foundation starts to become very large and the actuators and their mountings need to be seriously beefed up. Things start getting expensive.
I can make my Trackers at about 600 euros/$ for the materials including the Actuators.
However a 2kW simple static solar PV frame for an array can be only 200 euros/$ .
I get about 30% more from a tracker than a static array.
However now that PV panels are so cheap here in Europe I just put a few more PV panels on the static array to account for that 30% loss, it works out more cost effective.
I use RED ROCK, from the USA, solar tracker circuits now and I advise folk that get my book to do the same.
Here is another of my books.
ISBN 9780993590313
https://levivray.com/purchase-book---make-a-2kw-solar-tracker.php
