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I don't know about any built in ones, but depending on your use case, it may be better to get a separate plug in one. For example if you want to also use it for your board level repairs, I can recommend the Seek CompactPro, plus one of those after market macro lenses. They're available for iOS...

I don't think that embedded links to a specific post within a thread have imported correctly from the old forum. For example in this post there is a link that looks like this: which I wrote about here which just takes you to the first post in the thread. Whereas if I generate a new link it...

I investigated that a while back and wrote about it in this post. It shows that it isn't any kind of serial data, but more of a Demand/Satisfied signal. With that info, I then went on to design my own external limiter which I can control myself through RS485/Modbus. I wrote about that Here.

Thanks mike, that fixed it. 👍

I'm not seeing an option to jump straight from a thread title in the list to the first unread post in the thread. On the old site there was a blob just to the left of a title, which if clicked, would take you straight there. I see there is a "Jump to New" button once your in the thread, but that...

Following a further request, I have now created another variant specifically for @brettwatty 's 4 channel cell tester. This has holes for the new location for the temperature sensors. The files also include a combined insulator and spacer. This not only ensures the springs are insulated...

I've created a new thread about by design here: https://secondlifestorage.com/showthread.php?tid=9265&pid=63179#pid63179

With most Grid-Tie inverters, there is no way to regulate the amount of power they generate. They are designed to convert the maximum amount of power they receive at their input, into output power. The Grid-Tie Inverter with Limiter (GTIL) units however, have the ability for the output power to...

That sure sounds like a interesting concept. I've read your post more that once trying to get my head around it. If I understand correctly, you will have an arbitrary number of cells connected in series. A relay can connect each cell either way round, or bypassed, depending on whether it is...

Controlling the inverter is the end goal. But before that, I have to test and calibrate the different sections of the design to ensure they work OK. Then I have code to write to bring it all together.

It's definitely doing something :) I didn't get the voltage monitoring circuit right first time, so had to bodge on a mod. Current monitoring seems fine so far though.

Any USB to serial should work fine. As I said before, I made a lead to go between the serial adapter and the GTIL because I was concerned about pin 9. It may be fine, or it may not, I just didn't want the chance it and fry something. From memory, I think it was pins 2 to 2, 3 to 3 and 5 to 5...

It sure looks like you have RS232 then. To communicate, you need a Modbus master. I used a demo applicationfrom here with parameters set as I posted here. I never found an English version of the protocol document, but was able to get the gist of it using Google Tranlate.

I don't know if any of the units are fitted with RS485, but the best way to sure is to check the interface board and google the chip. I'm sure you will find it is an RS232.

My board design doesn't have an input for an external CT clamp. It has an on-board one, but you can't feed your whole house supply through it. It is only meant for measuring the current to/from one inverter. Basically it's the same as the official external limiter, but without the external CT...

Are you going to add all the new defects to it? :D Interesting project, keep it up.

it's called a CT(current transformer) clamp, and is effectively just a coil of wire that picks up a representation of the current passing through the centre via the magnetic field it generates, and outputs it as an AC voltage proportional to the current. Its a weak analogue signal, which is why...

I'm sorry but I don't know. There is nothing on the label and the only information in the manual refers to the Sunshine Website at http://www.chinesegrid.com, but that link is dead.

I don't know of any off-the-shelf solution that would work over 75 meters. Even the official external limiter (which doesn't seem to be available any more anyway) was only spec'd to work up to 30M. It might be possible to hack my diy thing I mentioned above, using a line driver IC, but that...

I have put together my diy limiter design and am waiting for the boards to come in from China: It has two comms ports that can be configured for TTL UART, RS232 or RS422/485 in either half or full duplex. The idea is that one port will be for control (I'll probably use modbus protocol)...