I got a Little Rosie and replaced the old reliable and very heavy Outback inverter with it. The Little Rosie is very light weight wise. It works, so far no complaints on that , I haven't really loaded it up much. I do notice it is a lot quieter than the Outback which had sort of loud fan that ran with many loads that weren't too large. The Little Rosie is very quiet and I haven't noticed it's fan running if it even has. I had some critiques about some of the layout for wiring which you can see in the first impressions video I made.
Now I am working on getting my Hawkebay monitoring software to read the Little Rosie data. Along the way I got waylaid trying to refine the HB code , and then I noticed some false data coming in on the canbus since I hooked up the Little Rosie. So I need to check my canbus wiring and terminations, etc tomorrow.
Here is the video I made, and I will have another about the canbus and software when I get those done.
https://youtu.be/WI2yNackAJE
Larry
Nice job Larry, I like that you were not afraid to express some shortcomings. I will be watching for future updates.
Quote from: Saggys on December 22, 2025, 07:39:08 PMNice job Larry, I like that you were not afraid to express some shortcomings. I will be watching for future updates.
Yeah a bit of nitpicking about access , especially since I had to put it in a harder to reach existing spot. But performance wise - it is all good so far. I haven't put any real big loads on it so far. I do know that it is a lot quieter than the outback which has some pretty loud fans that would run at loads that I don't hear anything from the Little Rosie.
Today I finally got some of software I am writing running to monitor it. It is always a time consuming process to steer my AI helper to the end goal in a simple reasonable way. I will make a video about that sometime soon .
Larry
I would love to hear how you are using AI to write programs! I was a programmer back in the 90's (yes eons ago) and now I just write a few simple batch commands as I don't really want to go down that rabbit hole again. I really loved to write code but I found I would stay up all night to get it right.. over and over... ;) -Bill
Quote from: bigbillsd on December 23, 2025, 11:57:56 AMI would love to hear how you are using AI to write programs! I was a programmer back in the 90's (yes eons ago) and now I just write a few simple batch commands as I don't really want to go down that rabbit hole again. I really loved to write code but I found I would stay up all night to get it right.. over and over... ;) -Bill
You just go on chatgpt or google gemini AI and ask it what you want to do . Give it as much information as you can . Then you have to check what it does , feed it back errors , and guide it along so it doesn't try to do stuff too complicated sometimes. So takes some time, but no way I could write all the code.
I thought I had canbus noise causing errors and chatgpt was suggesting maybe the end resistors weren't on or in wrong part of loop, etc.I checked everything. The errors were some really large numbers that were showing up in the data.
Next day I switched to Google Gemini AI and it spotted the issue right away - it was the canbus not sending a number and then the calculation went ahead and posted the crazy high value.
It redid all the chatgpt code and I think made it better. It had it's own issues to chase down and correct. Like when the data was coming in the numbers were fluctuation all over the place so it put in throttling and smoothing stuff in the code.
I didn't give it the full canbus data document at first because when I did that with chatgpt it ended really slowing down responses and timed me out later cause I reached the daily free limit.
I then used gemini ai and didn't want to bog it down but I wasn't giving it the correct canbus stuff it needed. At the end of the day , I finally gave it the canbus document and it just read it quick and then spit out the correct code that we had tried to figure out all day. I told it I didn't give it the document at first because of my chatgpt experience and it said how it is a different model ai that can take in all those documents no problem .
So you live and learn .
But even with AI I stayed up real late some nights too !
I am just the coach and tester.I just got Rosie data going - will post the updated code to github soon.
here is the mqtt data that is posting so far.
hawkesbay
whizbang
amps = -1.2
battery
power = 0.0
voltage = 54.3
current = 0.0
charge_stage = Resting
state = {"battery": {"voltage": 54.3, "current": 0.0, "power": 0.0, "charge_stage": "Resting"}, "rosie": {"voltage": 119.9, "load_watts": 29.7, "fet_temp_f": 81.5, "transformer_temp_f": 82.8, "frequency": 59.99, "batt_temp_f": 71.1}, "whizbang": {"amps": -1.2}, "pv": {}, "daily": {"kwh_today": 5.4}, "timestamp": "2025-12-23T21:57:41.955084+00:00"}
pv
voltage = 346.5
watts = 0.0
daily
kwh_today = 5.4
rosie
voltage = 119.9
load_watts = 30.4
frequency = 59.99
batt_temp = 71.1
fet_temp = 81.5
transformer_temp = 82.8
Here is what it told me about the wrong big number value
That large number 6553.5 is a classic digital "null" or "high-impedance" value. In hex, that is 0xFFFF.
When the Hawkes Bay goes into "Resting" mode at night, it effectively disconnects the PV input. Instead of sending 0, the register returns all ones (0xFFFF). Because our script divides by 10, we get 65535/10=6553.5.
so to solve that it put a filter in there to not show anything above 600
I like that it explains every step so you can learn
Larry
Wow, that's impressive. I am happy with just knowing the SOC of the batteries at the end of the day. I am
so behind on data collection.
Thanks! I decided to try using AI to create a batch file to transcode my OTA tvshows from mpg to mp4 using an h.265 codec and the results were amazing. In seconds it did what took me literally weeks of trial and error, and it worked first try. I am glad I am not an IT worker anymore as I see high paying careers going the way of the horse and buggy.
Quote from: bigbillsd on December 25, 2025, 05:05:07 PMThanks! I decided to try using AI to create a batch file to transcode my OTA tvshows from mpg to mp4 using an h.265 codec and the results were amazing. In seconds it did what took me literally weeks of trial and error, and it worked first try. I am glad I am not an IT worker anymore as I see high paying careers going the way of the horse and buggy.
I just spent a couple days updating the project - take a look if you want .
https://github.com/larduino/hawkesbay-can2mqtt
I tried to clean up the github page too.
I also think about what it must be like for a programmer looking at AI. You still have to steer the AI in the right direction and know a bit of what to ask it to do.
But it explains everything it does in detail without ever calling you names for not getting it - haha!
Rosie is now supported on my project along with the Hawkes Bay .
https://github.com/larduino/hawkesbay-can2mqtt
The graphic below is just a test one from Home Assistant and they can be made however you want them.
Larry
part two video of the Little Rosie canbus wiring and software development
https://youtu.be/4lQMH0lgGTE
Larry