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I find it disconcerting that there are a lot of undocumented interactions between the settings. I've got to let it run a bit, but I think that having setting 06 set to OSO is going to be the ticket. I've also limited the charging current to 5A, to limit the rate at which switchover occurs. I...

I found the manual online. Page 24 seems to be the one of interest. It appears that there is no SUb option, but there is an SBU. Is that the same thing? I think I may have found a solution. Set the battery cut-off value to 80% or 90% of the batteries capacity. . .ie, barely draw it down...

For my system, I have some panels tied to a PowMr all-in-one (I feel bad about the PowMr. Please don't judge.) There is just enough battery to say that I have battery, and then there is input from the grid. I have the output tied to a breaker box that runs a few house circuits. These...

They don't power anything for long. LOL! I have a TV, few light, and a couple computers. There are 4 house circuits hanging off the inverter. But, they are all intermittently used with low loads. I don't cycle them very deeply at all, and have the All-In-One set up in UPS mode. At night, I...

There are probably as many reasons for using solar as there are members here. Some want to save the world. Some want freedom from the man. Some have no ability to tie to the grid. And the list goes on. I just want to save some money. After six months or so, I'm finally having some success...

Don't do it, Jeff. Just don't. I've got one. If you're wanting to see what solar will do, this jet engine sitting in your closet isn't the way to do it. If your budget is that low, consider wiring the panels directly to the secondary on your water heater, turn the temp on it way down and...

No secret. A good description of my system is here: https://diysolarforum.com/threads/i-jumped-in-head-first.21963/

Thank you, but this is a bespoke kit that I put together from multiple suppliers. @Rednecktek has the answer I was hoping for, as my ultimate goal is to get the most payback for my dollar. In 2022, it seems that the way to do that is to throw some extra panels in to get more out of the other...

It does the job, but the company sucks and I've not been able to get any technical details about it so that I can track its performance. The data it reports is not believable, as some seem to be off by a factor of two. If I had it to do again, I would go with the company that they stole the...

I have an all-in-one system with exactly this setup. I have two 100Whr/12V batteries in parallel, and 1500W of panels. When the panels aren't producing and the batteries are drained, it pulls from the grid. In this configuration, my controller is just another load on the grid. The benefit is...

I have an all-in-one controller/inverter that can handle 1500W of solar input. It has 300WHr of battery backup, and the output runs four circuits in my house. In setting up up this system, the big money items were the controller and batteries. Rough numbers are $300 for panels, $600 for...

My system isn't running as of right now. The RPI Zero uses a 32-bit processor, and that is not compatible with the software I was using. I don't want to run a pc just to monitor the system, so I have no monitoring right now. I powered the PI Zero from the inverters USB port, using the printer...

Exactly what I did. Doesn't work on the latest Zero. Influxdb 2.0 doesn't work on the latest Zero, either, though some people have tried to make unofficial builds.

Another issue that somebody might run into and spend half a day not being able to solve. Grafana will not run on the latest Raspberry. It is built for ArmV4, and the r-Pi is built with an ArmV6 processor.

Hope this helps somebody, but I've got it to working by setting the baud rate to 9600 in my code.

I found some troubleshooting advice on the RaspberryPi pages. Using dmesg, I see that the USB is connecting to the device: pi@raspberrypi:~ $ sudo dmesg -C pi@raspberrypi:~ $ <went over, disconnected, and then reconnected the controller. pi@raspberrypi:~ $ dmesg [51165.301178] usb 1-1: USB...

I had not heard that. I went with the Zero for smaller weight and reduced power draw. I was going to let it hang from its connector and be powered by the RS-485 power.

It's been a long day, but I finally got my script running on a Pi Zero. The problem is that minimalmodbus is coming back with "No communication with the instrument (no answer)". I plug the same cable into the Linux box that I've been monitoring with, and it works just fine. /dev/ttyUSB0...

It seems that there are multiple projects in Github named SolarShed. I'm working to monitor my PowMr unit and followed used this project as a template: https://github.com/corbinbs/solarshed I put my project at: https://github.com/Shotgun167/simplesolarmon I see a significant difference in...

I just looked at the manuals posted by @Will Prowse . I get the sense that PowMr is not on the up-n-up. Their manual looks just like the one posted, except with less information. And my emails to their support line, asking for help with which register addresses hold which information was met...

I bought one of the PowMr units. You should not. No. Really. You shouldn't. But, if you did, you might find, like I did, that you have no way to monitor it. Well, now you do. . . mostly. This project is based loosely on the SolarShed project. I just simplified it as much as I could. I...

What @Ale said. That's where I got mine, and they are working flawless so far. They shorted me a cable on the shipment. I emailed them, and I had a Fed-Ex package a couple days later.

A different tack you might consider is to give up on feeding back to the grid. The big players have too many people working for them to insure that any agreement they make does NOT favor you. I chose to get an all-in-one system. It will pull from the grid if the solar and batteries are low...

No one is going to sell you a system like this. Not enough profit in it. This is 100% DIY. Used panels and batteries from one place. Controller from another. Other bits and pieces from the big box hardware stores. Don't get your controller from PowMr. Just don't <sigh>.

I have the same question on a slightly different system setup. I have 1500W of panels, feeding through a PowMr all-in-one system to a couple 12V/143Ah batteries in series. I feed the 3kW capable output of the all-in-one to a breaker panel, that I've tied 4 of my house circuits to. These...

I bought one of the all-in-one systems that does not back feed to the grid. Duke Power isn't going to give me anything for what I generate anyhow. I dropped in a panel below it, and ran several of my house circuits to it. Those circuits were driven by the grid over the past few rainy days, but...

For you guys using the PwrMr, - do you have any monitoring software that will work with it? - does the current from the panels seem to indicate double of what it can reasonably be based on current going into the battery and out the inverter? - my setting 04 (Battery power to utility setpoint) is...

This appears to be a 3-d chess level of challenge for each individual installation. I mounted the panels on the side of my house, and get clear sun up till about 2pm. At that point, one corner of one panel gets shadowed by an eave. About two blocks get covered. I tried to ascertain what it...

It seems to me that the concern is about driving the cells too hard, and I think that would be valid. However, would it be that difficult to arrange a reflector(s), such that there reflections only hit the panels during the morning and evening hours when the panels are starving anyway? I'm...

So then you'd have a 2S/1S2P hybrid. I don't see how that helps. I had: -> 30V -> 30V -> 8A -> 30V -> 30V -> 8A -> 30V -> 30V -> 8A Put a diode to bypass what is essentially a very large diode because it isn't acting as a current source, and I get: -> 30V -> ~~~ -> -> 30V -> 30V -> 8A -> 30V...

In DC electronics: With series anything, the current is the same through all and the voltage varies across each element. With parallel anything, the voltage is the same across all and the current varies through each element. Solar cells are diodes that act as a current source when exposed to...

About 37.6V and 8.85A. At Pmax, the panel says 30.3V and 8.27A Yeah. They have few specs. I bought them used, and half of them are still sitting on the ground, but I'm trying to keep them clean. It'll be easier once I get them mounted. :-) The charge controller is a PowMr HF2430U60-100...

Experienced guys probably know this without even knowing that you know it, and I guess I should have known it, but it was still surprising to me. I've got six panels, arranged 2S3P. I've been working on getting them up off the ground, but haven't quite completed that job yet. Three are...

I've got two Leoch XP12-540FR in series. They advertise 155Ah. Is it correct to multiply that by 24V to get the Wh? That gives me 1.860kWh, which seems low. But then some of the spec sheets say "15MIN-1.60 V / Cell (Watts): 539". 539W/cell x 6 cells/battery x 2 batteries => 6468W, which...