Here are some of the comments that I've received since starting my business in March 2014:
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Many thanks for taking the time to talk to me, it has confirmed that the combination of a good idea, a well executed project and a friendly back up is the way forward.
I purchased mk2 kit from you earlier this year and I am absolutely chuffed to bits.. Not once have I had to reset and through out this period has kept my heat store into the 70 degrees.
The PV router arrived safely and soundly yesterday, which makes it just over a week - very good service from the British Mail there. Excellent job on the packing. Everything was snug and nothing rattled its way loose during the journey. I'm delighted with the build quality - it's even better than the pictures on your website and everything is very clear and easy to follow.
JW, New Zealand
I want to congratulate you for your kit high quality, I built the Mk2 easily, it is now wired to my home electrical system since last Sunday and running fine.
Thanks for all your help so far, now going to rig it up with real pv. This has been an interesting journey, the construction side was fairly straightforward and enjoyable, but the world of Arduino was a steep learning curve, like all things its easier when you know how but its the challenge that makes it worth while and keeps the neural network firing!
Thank you for your assistance during the build, I am very satisfied with the outcome.
KR, New Zealand
I’m a trained electronics engineer but had an RTA leaving me with no use of one arm so precision soldering is an issue. Robin built two systems to my own specification and both are in use and run seamlessly charging a 24v battery bank. I followed Robins project from the early days and the introduction of wireless control is perfect for my application.
Thanks for all the help! I am embarrassed to say that it is now working 100%. I missed the link on IC4 altogether. I actually woke up in the middle of the night with the thought that maybe I had missed a resistor or something! That was about the time that you typed your last email - so maybe it was telepathy!
CG, South Africa
I have had your PV router for several months and I am very, very happy with it.
I’ve now had my system up and running since 18th March 2014. During this time I have diverted 1565KWh to heat my hot water. I have a 3.3KW solar PV system and also have a gas boiler. Savings over the 6.5 months since install, compared to gas prices, has been £52 or 29.4% of cost of the mk2 pv system. Been very pleased with both the system and the ROI. [6th October 2014]
Your v4a sketch is working like a charm and the wireless data is being received by a JeeLink on my laptop every 5 seconds. The temperature display is just what I hoped for.
Just e-mailing to say thanks for a great kit, me and my 12yr old boy had much fun putting it together (kept him away from 240v). Instructions were easy to follow, supply/packaging are professional and a credit to you. Will defiantly recommend to others.
Your construction is very neat and well laid out. I am very pleased with the product. The Schneider Electrical Box gives it a professional touch and the display is professionally finished. Your packing was first class and there was no damage.
GC, New Zealand
Even in the dark days of winter the system has managed to divert quite a few KWh. By my calculations the payback for the year has been 43%.
NB. This was for a pre-built system with a display and RF. For a "basic" pre-built system, which would have diverted the same amount of surplus energy, the ROI would have been 52%.
Just a quick email to say thank you very much for your hospitality and sorting the router kit last sunday, especially when not feeling well. The assembled unit is working perfectly, producing lots of free hot water, diverting a lot more spare power than I even expected. Great design and thanks for taking the extra time to give me assembly advice.
Thanks very much for your speedy and interactive service Robin, it was a pleasure doing business with you.
Another PV Router success and a tribute to the versatility of your design. Many thanks for having produced it and made it available to everyone.
I love the way the LED flashes so you have a quick view of the power state. Many thanks for your help. Great service and support.
The router arrived yesterday and the installation was straight forward. Yesterday was sunny so the unit started working as soon as it was powered up. Thank you, the build quaility is superb.
I just bought the PCB and build it myself. The result and the performance of the Mk2 is astonishing!
There is only one thing to say about your code - Mk2_RFdatalog_4.ino (and PCB). EXCELLENT!!
I have both a single phase and a 3 phase hydro system. In addition to a mk2 on the single phase I have been using 3 seperate mk2`s to divert power on the 3phase. These have now been replaced by the mk2 3 phase version which has the advantage of utilising spare capacity on any underused phase to balance consumption on another phase - will be a significant saving. Unlike a solar system the hydro generates 24/7 so these mk2 units have been diverting 3 or more Kw each for several thousand hours.
It has been some time since I received your kit. Just a quick note to let you know that today was my first day with it installed and in service. Your kit was a pleasure to put together.
SC, New Zealand
Your unit is still working perfectly – now two wind turbines running with solar panels and it compensates perfectly.
Thank you again for a great piece of work and super service. Even though I have built mine I will still be monitoring your site to see what's new.
It is running beautiful out of the Box.
We are sat in the sun room just discussing the hands on approach and excellent communication skills you have. Its been an absolute pleasure dealing with you.
The Mk2 PV router kit that I purchased from you has been up and running for about 3 weeks and has diverted 30KwH so far.
I have to commend you on your kit and instructions, well packed, quick delivery, every part labelled and very good instructions, very impressed (and it takes a lot to impress me nowadays).
I'm really impressed with how you put it all together, right down to the packing! Absolutely fantastic!
My roof is within 10 degrees of North which is lucky. It is a bit too flat for most of the year (15 deg from horizontal) but good enough. I think the biggest asset is our sunny weather and the PVrouter.
SC, New Zealand
Have received the goods I ordered thanks, I would in the future use your shop again and have no problems recommending you to anyone requiring
The bits arrived today and its all now working. Thank you very much for help with this I really appreciate it.
Hi Robin, just a quick note to let you know my pv router arrived. I'm very impressed with the quality of the kit! Felt better than unboxing a new computer :-)
MJ, NSW Australia
The router has been running faultlessly for 10 weeks now and has become an accepted part of our furniture. We are really happy to have the divert facility and really pleased with your implementation. Thank you!
DW, West Sussex
Thanks for your kit and help. The unit is working splendidly.
Thanks again for all your efforts in getting this project onto a professional style platform with detailed documentation as well.
IL, Brisbane, Australia
I'm presuming the CE-marking is to enable ready built units to be sold. I wish you every success with this, as not everyone is able to build units up from parts. I do know it is one of the best pieces of kit I've built, and the most financially rewarding. Enabling a Solar PV system to not only save on Electricity import, but to reduce Gas consumption.
My PV Router has been working flawlessly and I couldn't be happier with it. The proof of the pudding was when I got my last power bill showing I had used zero power from the grid to heat my hot water tank.
SS, NSW Australia
I’d express my gratitude to Robin for his support during the assembling, start-up and aftercare stages. A high quality kit, with detailed assembling info, that’s makes possible a straightforward success. A superb project recommendable to anyone with a little knowledge of soldering!
The following comment relates to the original version of the Mk2 PV Router, as posted on the Open Energy Monitor forum:
I built one of the original Arduino based solar router systems back in 2012 and have been delighted with it – it worked from power on and has been running ever since.
I have been extremely pleased with the MK2, it’s worked flawlessly for 4 years now. It’s a great bit of kit.
The Mk2 Router is still functioning perfectly, with no hiccups in over 19 months use, with our wind turbine.