One Man's Adventures into Renewal Energy
Please help me to continue hosting this website & associated costs by donating £2.
In return, I'll email you a ZIP file containing arduino code + all images from the website + some extra ones that aren't on the website...all in high res (370MB of pics!).

DIY 2-axis Solar Tracker Build

This website will detail my journey to creating a Sun Tracking Solar Panel Array aka Heliostat

I have decided to create this diary so that I can look back over the weeks/months/years and remind myself of the exciting days of creating my PV array.
Hopefully some of you reading this will learn a lot from what I've done and may be inclined to have a go yourself.
There are many options available when it comes to creating energy using solar. Advantages/Disadvantages of each - Even though building a dual axis tracker is the most difficult to build, I've decided it's the way to go.
As you can see, a Tracked PV panel creates significantly more power in a given 24 hour period. Some estimates have placed this increase between 30%-50%

Static Panel versus Tracked

I believe the extra hassle of creating a Solar Tracking array is worth it when you consider just how much extra power you can create in a year. Providing you are clever with sourcing components, I reckon a Tracking Array could pay for itself in a year, maybe two.

A little about me

My name is Gavin. I'm 35 years old. I live in Nottingham, UK.
I've been interested in renewable energy for years, probably about 10 years. The idea of being green and doing my bit for the environment (as well as saving money!) is very attractive to me.

I'm no expert DIY'er and I am undertaking this project with no prior experience. But I do have a decent selection of tools and a general aptitude for this kind of construction.

See the Prototype


Teweti Toare - 24/04/2018 21:17:22
Hi Gavin I am interested in this Solar Tracker project, but not sure if I can follow the instruction successfully, especially the Arduino. Are you able to give more instruction for Arduino programming? Thanks TToare

David Schaffer - 14/07/2015 23:50:07
Hi, I have 16 cells mounted static, very poor performance,looking for some ideas on building a 2 axis roof mount. Any ideas

felix - 16/01/2015 06:19:45
We are a manufactuer of sensor and inclinometer in Shanghai, China. Also work in this field for around 15 years. Our sensor can be well used in solar tracing solar system, including single-axis and dual-axis . my email:

Kolapo K - 02/02/2014 18:24:19
Hello, I am studying BSc Mechanical Engineering and I am working on building a solar tracker for my final year which is due in march. So I haven't really got that much left. Therefore I would appreciate if you could guide me to creating my prototype. I've got access to some materials in my university at Kingston, so I need steps to the components required to move the design. Thanks for the help provided on your website, your heaven sent.

Bhavik - 24/01/2014 20:19:06
Hello, I am studying Mechanical Engineering at Rutgers University in USA and I was wondering if you could email me details regarding how you built the dual-axis sun tracker. This is just one component of my project and I have been having difficulties understanding it. Please email me with any information you may have and I will get back with follow up questions if I need to. Thank you.

ajit - 28/11/2013 02:21:15
Can some tell me procedure to calculate the sun elevation angle other than NREL and work on platform like arduino

Cody Wagner - 16/10/2013 00:08:47
If possible could you post your current Arduino code for the solar tracker. Thanks.

- 28/07/2013 07:43:37
Hi Andre. I couldnnt supply a ready made tracker, but there are lots of manufacturers making them. The costs are quite high though. Hence why I went down the DIY route.

Andre - 26/07/2013 10:08:26
I just checked this project, is there anyway I get this already done? I live in Brazil I would like to use it in my home for studing.

- 13/03/2013 09:53:48
Suresh - I'm not sure I'm up to the job of creating and selling a two-axis tracker. I'm just a simple hobbyist! My suggestion would be to keep checking my website. I'm hoping to provide some pretty good instruction on how I built mine..and hopefully you can use to help build yours :o)

suresh mirchandani - 12/03/2013 20:38:20
I am looking at designing a Floating PV System and need to design a 2 axis tracker. You seem to have a good knowledge of the design. Would you like to make the first prototype for a fee? Suresh Mirchandani

ADMIN - 01/02/2013 15:59:29
Clive - An interesting idea. What with having a day job, I'm reluctant to venture down this route. Also - the payments for FiT have dropped, resulting in solar not being quite as attractive (and lucrative) as it once was.

Clive Durdle - 31/01/2013 18:28:42
Is not the solution here to set up a co-op that is properly accredited, will certify DIY work, shares FIT income properly....?

Sean G - 30/01/2013 19:28:50
I am currently working on a project that needs this kind of system for larger motors. I am unable to construct this myself, and am looking to buy a prefab system. If you are interested in constructing this for me, please contact me

ADub - 31/12/2012 23:55:51
I think a Heliostat is a mirror ;) nice little project though. If you want help with H-Bridges and motor drive... Shout - I've applied for hi res ;)

rich r - 25/05/2012 14:51:22
I look forward to see how this pans out


Email Address (won't be shown)

Human Check - What colour is the sky?


Copyright 2020