Recent content by watts-on

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  1. watts-on

    Watts-on's DIY GTIL Controller

    Well, I don't know about the potentiometer method, but when using the external limiter input on the inverter, yes, it is necessary to measure the output from the inverter. You could do it with only a current transformer as the sensor and control only the output current, but fluctuations in line...
  2. watts-on

    Watts-on's DIY GTIL Controller

    The board has not yet been put into service, as I am still designing my battery packs, so I don't know about reliability etc yet. It did work as expected in my lab though. What else did you want to know?
  3. watts-on

    Watts-on's DIY GTIL Controller

    I don't know what the original voltage was because as I explained at the end of this post, that signal is directly connect to mains voltage inside the external limiter unit and I wasn't going anywhere near it with my test gear. :eek: But in any case, LEDs are really current devices. They don't...
  4. watts-on

    Watts-on's DIY GTIL Controller

    Thanks! Your welcome. It was a lot of work but I very much enjoyed the learning process. There is no specific voltage. That signal is just driving an opto-coupler inside the inverter, so provided the signal from your cpu can drive an LED it should be fine. As I explained in the first post, it...
  5. watts-on

    Mobile Phone with thermal camera built in.

    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...
  6. watts-on

    Software Conversion Maintenance

    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...
  7. watts-on

    External limiting an GTIL2 SUN-1000G2 with raspberry

    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.
  8. watts-on

    Software Conversion Maintenance

    Thanks mike, that fixed it. 👍
  9. watts-on

    Software Conversion Maintenance

    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...
  10. watts-on

    Watts-on's "SpringSlot" 18650 Battery Holder

    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...
  11. watts-on

    External limiting an GTIL2 SUN-1000G2 with raspberry

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

    Watts-on's DIY GTIL Controller

    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...
  13. watts-on

    Building a cheap, acurate, AND Efficient arduino controlled cell tester from scratch!

    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...
  14. watts-on

    External limiting an GTIL2 SUN-1000G2 with raspberry

    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.
  15. watts-on

    External limiting an GTIL2 SUN-1000G2 with raspberry

    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.
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