Dual Axis Solar Tracking System with Solar Tracker

Does what was promised: my panels track the sun. That is, when it is a sunny day. On cloudy days however it just tries to find the brightest part in the sky: it makes a lot of unneeded movements and those movements can be quite large too. And that is where one problem starts: the motors are rather loud, so on cloudy days there's a lot of noise coming from the device.
Another problem is with wind detection: the value listed after W: in the controller screen does not seem to be related to the rotating speed of the wind sensor. As a result I don't know if the setting for the wind protection needs changing or not, or even that it works at all. I've checked the sensor using a volt meter and the output does increase when the sensor spins faster. Yet the controller doesn't show this. Also, we haven't had any hard winds yet, but even with only a little wind the panels show a lot of movement: all of the joints are quite loose. I'm a bit worried for what will happen if a storm does come by: it will move a lot, that's for sure, but will the wind protection kick in in time? On top of that, the action it takes seem quite risky: when it detects a hard wind, the panels will first move to the furthest east, then move back to the horizontal position. In other words, it will first move the panels through every position in which the panels catch as much as possible of the wind, only to move to the middle position after that. I understand this is because the controller has no absolute positioning, but this doesn't seem like the safest strategy to me.

Yet, I'm still impressed with the simplicity of the design for this price. I do intend to replace the controller with one of my own design though. I will try to address the large amount of movements by having the tracker point to the calculated position of the sun throughout the day, plus the abrupt movements and loud motor noises by applying a h-bridge instead of relays, so I can make the motors do a slow start and stop. And of course I will try to find a better approach for positioning the panels into the night and wind-protection positions.

Very impressed with the price and qauilty.
Its response to sun light was prefect facing towards where it was in the sky.
We put it on a pallet to test the system before we choice a suitable test location.

I am unable to rate this item yet because I'm waiting for a suitable base to be built in my garden for it to be installed. Thank you for your prompt delivery of my purchase.

Having seen a lot of videos on this, I decided to get one to try. I’ve put it on a pallet in my garden so I can keep a check on it just using a 400w portable solar panel. When we have the sun, it is tracking it perfectly and charges my battery pack well. Will run it through the winter to play with and if it continues like this I can see me getting at least one more. At the moment, for the price, VERY impressed as are others who have seen it. Download the building instructions from the website as my book was a little different and I wish I had done this first, also remember, stainless steel bolts don’t always come apart again when put together.

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