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Friday, 24 May 2019 Dereel → Napoleons → Dereel Images for 24 May 2019
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Inverter configuration error?
Topic: Stones Road house, technology Link here

I've been playing a little with inverter settings. Today I set the “charge from grid” rate to 1000 W and a maximum charge of 40%, pretty much the opposite of what I did last time. When trying to save the configuration, I got a message: “Error writing config”, an indication of how modern this inverter is.

What went wrong? Hard to say. A retry worked.


Wine!
Topic: technology, food and drink, opinion Link here

Message from Australia Post today: my wine is waiting for me in Napoleons.

But yesterday it still hadn't been picked up. How did it come so fast? Clearly by net transfer. It still hasn't been picked up. The tracking information reads (upside down, of course):


Awaiting collection at NAPOLEON CPA
NAPOLEONS VIC Fri 24 May • 10:14am

In transit
WENDOUREE VIC
Fri 24 May • 5:53am

Unable to deliver - Item carded and transferred to post office for collection
WENDOUREE VIC
Fri 24 May • 5:52am

Shipping information approved by Australia Post
Tue 21 May • 9:21am

Shipping information received by Australia Post
Tue 21 May • 8:51am

Is it really worth the trouble to maintain such superficial “tracking information”?


More clever error messages
Topic: technology, opinion Link here

While trying to create maps of yesterday's dog walk, got an unexpected error message:

 
This should be ENOENT.png.  Is it missing?
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Yes, that was a link from the same site. But on closer examination it proved to be a new way of saying “we can't find your input file”.


Saturday, 25 May 2019 Dereel Images for 25 May 2019
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Various botanical issues
Topic: gardening Link here

While taking the house photos today, discovered that the Alyogyne huegelii that I planted in the spring is finally flowering relatively profusely:


This should be Alyogyne-1.jpeg.  Is it missing?
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Why only now? Was it too hot before? Not enough watering?

On the other hand, the Hardenbergia planted just 2 metres away is looking really unhappy:


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Is it going to survive? And why the problem? It's native round here, and there's nothing special about what has happened to it recently.


More solar energy inverter information
Topic: Stones Road house, technology, general, opinion Link here

While Fyodor was here on Tuesday, he showed me some other functions of the solar electricity inverter web server: http://inverter.lemis.com/#localinverters/datalogger gives a tailored display of parameters, going back apparently to the installation:


This should be datalogger.png.  Is it missing?
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This one includes all sorts of parameters that I haven't been able to find elsewhere, including grid voltage and frequency, and even “Inverter. Phi Cosine” (what I call cos φ, but is generally referred to as Power factor). And at top right there's a little green box

 
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OK, I'll bite. What's the format? It proves to be:

time;InverterCode1;InverterCode2;WarningCode;alarms;CosPhi;Eparc1;Eparc2;Freq;Iac1;Idc1;Pac;PacBatt;PacPv;Pdc1;Qac;SOC;Vac1;Vbatt;Vdc1;WorkingHours;stops;mid;Firmware;EPvToGrid;EGridToBatt;EBattToGrid
2019-05-25 00:00:02;0000;0000;07e3;00000000;0.8467;2019;2019;50.067;2.415;0;6.8;702.7;6.8;0;508.8;23;245.1;256.07;355.4;2019;;1;ABH1002_Z;0;0;11
2019-05-25 00:01:02;0000;0000;07e3;00000000;0.8134;2019;2019;50.011;2.618;0;3.6;611.5;3.6;0;558.4;23;243.5;256.28;352.7;2019;;1;ABH1002_Z;0;0;21
2019-05-25 00:02:02;0000;0000;07e3;00000000;0.7794;2019;2019;49.94;2.507;0;4.6;534.3;4.6;0;523;22.8;239.7;256.3;347.2;2019;;1;ABH1002_Z;0;0;30

How about that, all the data together, one entry per minute. There must even be some way to import this directly into a MySQL table. Did a bit of snooping and discovered that it came from http://inverter.lemis.com/inverter/log/1/2019-05-25. And sure enough, I can pull it down like that:

{"code":"ok","date":"2019-05-25","id":"1","data":[{"time":"00:00:02","val":{ "InverterCode1": "0000", "InverterCode2": "0000", "WarningCode": "07e3", "alarms": "00000000", "CosPhi": 0.8467, "Eparc1": 2019.0, "Eparc2": 2019.0, "Freq": 50.067, "Iac1": 2.415, "Idc1": 0.000, "Pac": 6.8, "PacBatt": 702.7...

Oh. That's JSON, not CSV. But again, I can convert it. With this information it's not clear that my current data (one entry per second) is of any use.


GPS tracking: worth the trouble?
Topic: technology, general, opinion Link here

While writing up my diary for yesterday, processed this map of walking the dogs:

 
This should be Dog-walk-20190524.png.  Is it missing?
Image title: Dog walk 20190524
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What is that nonsense? The pointed “path” at bottom right would have taken us a good 100 m through Fiona Drayton's paddock. I've seen paths like this when the app is allowed to guess location based on the network, but I had explicitly removed any such points. And the real track is ridiculously inaccurate. Is it even worth it?

Today I got something only marginally better:

 
This should be Dog-walk-20190525-detail.png.  Is it missing?
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Would a better GPS receiver do better? I had suspected that trees might play a part in the problems, but the last one shows that the accuracy is no better when there's no tree cover.


This page contains (roughly) yesterday's and today's entries. I have a horror of reverse chronological documents, so all my diary entries are chronological. This page normally contains the last two days, but if I fall behind it may contain more. You can find older entries in the archive. Note that I often update a diary entry a day or two after I write it.     Do you have a comment about something I have written? This is a diary, not a “blog”, and there is deliberately no provision for directly adding comments. But I welcome feedback and try to reply to all messages I receive. See the diary overview for more details. If you do send me a message relating to something I have written, please indicate whether you'd prefer me not to mention your name. Otherwise I'll assume that it's OK to do so.


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