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Exactly. I use HomeAssistant to keep an eye on the SoC and that activates the grid charger when the set low value is reached. To prevent the battery goes to low. I just upgraded this a few days ago to a new more powerful Victron BluePower 12V 30A actually. I am planning on also replacing the...

offcourse there is a monitor on it. ;) This is my custom dashboard in HomeAssistant. Pulls in data through node-red from MQTT on a raspberry pi with VenusOS. I have a thread about it on here. I think you replied there too about my 11 x 8Ah battery bank (88Ah). Or on one of my previous...

I have a small server, intel NUC, that uses less than 5 watts at 12-19 volt input. So it fit perfectly in the range of charging voltages for a lifepo4 battery. I have a 12V 8Ah lifepo4 cell I want to use for this UPS. Combined with a victron smartshunt/bmv to monitor the SoC. It will not be...

I have found a local shop that sells various battery stuff and also BMS'es...so I placed an order there. I got a JK Smart Active Balance BMS BD4A17S4P which is supposed to support 8-17 cells, has bluetooth, can be configured for 1.2v-4.5v per cell, 40A max current. It was 45 euro's and should be...

Ahh, I see. I sort of low voltage cut off not for the whole pack but when one of the cells get's to low. I am still thinking a BMS is the way to go...but I want something cheap and if possible not reinvent the wheel. Also...considering my actual goals those low voltage situations might never...

I think the capacitor pack I bought that had voltage differences just have low quality caps or something. I have also been asking ChatGPT about this and it said something about causing a reverse voltage potentially harming a capacitor when it reaches 0.0V earlier than the others and when still...

I never said it wasn't suitable, but besides that I am not from Australia I couldn't find anything on the link you mentioned either: ;) To me looking at just the picture it looked like a similar thing to the simple cheap "circular boards" I already have that activate a resistor at a voltage...

I got them pretty cheap I think for about 25-30 euros for 5x 2.7V 500F super capacitors on amazon. I have 10 now and thinking of getting more....but ONLY if I can use them safely and correctly. Meaning both balanced voltages across the cells and protection/prevention of more than 2.7V. A BMS is...

I have looked at some LTO BMS's that might be suitable...in the price range 50-80 euro's from what I have seen. Also with a high AMP rating ofcourse of 100A or more is what I am looking at. Not that I really expect a super cap bank to hold that much current for long, hahaha :ROFLMAO: Thanks...

I have a few super capacitors and want to make a module out of it with an actual BMS to balance the voltages between the cells. I have loose 500F 2.7V supercaps that I have done some experiments with. No protection circuit yet. Charged with a bench powersupply tot 2.6V manually until no more...

Now that is a way more constructive and motivational reply! ? Only issue is I can't create a height of 5 meters...as my ceiling is at 2.5 meters. I can do a pulley system...which will also minimize the load/torgue/(whats the term) on the gears that pull it back up. And maybe the motor. I plan...

If you meant to me (or others)...I am starting to "Get it". The idea is great,clean,free (as in not costing fuel or money)... but is not really "usefull" on a small scale. Only as a learning experiment it's a good project, but not as another way to charge my phone. That message got through. ...

I had no idea something like this existed!! That's so awesome! ? ?(y) That product gives hope there is at least "something" possible with it in a small home environment....just not charging a phone maybe. It also gave me another idea...using pulley's to "increase the height" while still having...

I do have lights on my bicycle yes...but pretty sure they are battery powered actually. Might have to change those as I have not been using my bike for about 2-3 years now :ROFLMAO: :ROFLMAO: The idea came when looking at a possible swimming pool at about 11km and what route I would have to...

@ Thanks for the reality check! I have done some more research and it's not as simple as I had imagined it to be...it will never generate as much power as I had hoped. In my mind...as long as the generator is spinning the required RPM's and has the torgue things would be "ok". I had no idea the...

I have done barely any calculations...just a conversation with ChatGPT ;) As I said my ultimate goal of the project is to charge my phone with it...or at least a powerbank that in turn will charge my phone. it would not matter to me if in order to do this I would have to put the weight back on a...

I have a small solar system for about 2 years now and I love it! It's really small with only 250W peak for about 3-4 hours a day in summer and about 100+ for maybe 6 hours. On average between 0.7 kWh - 1 kWh of generated power. I know it's peanuts but it's enough to keep my phone, tablet...

Thanks. I am actually still getting the parts together to connect the batteries safely. ? I had done some "cleaning" and put a lot of the not so often used solar components into my storage unit. But it's not all in a single box! It's a bit of a search to find the "spares" for fuses, wires...

Ok, great! It's not so much that I have an extreme high load or anything, I would just like to have a bit more runtime and collect more solar energy. Some days I have just nothing to charge anymore...and still 2 hours of full direct sunlight left. (this was in summer by the way). But good to...

For nearly a year now I have my DIY-ish self built 88Ah LiFePO4 batterybank. It's made up of 11 smaller 8Ah batteries, joining on a central busbar, individual cell fuses, disconnect switch, 80A main fuse and to monitor it all a Victron BMV-712 Smart. Each battery "cell" has an internal BMS that...

Alright...I think this is going to be tested as an experiment anyway! :ROFLMAO::ROFLMAO: I got a huge deal on amazon fro 5x 2.7V 500F super capacitors for just 27 euro's! (dollar is about the same right now) So I could not resist and ordered two sets for 10 capacitors in total! Today they...

While the idea to use a super cap as a buffer still interest me....I did eventually give up because of the involved cost to make it effective. For me it's just experiments so no loss here and I learned a lot. The whole idea actually might have come into my head from a similar technique in...

Thanks. I was going to post that but I wanted to give @jfpetesn some time to get VenusOS and Home Assistant running before overwhelming everyone with all that technical stuff ? On the left are MQTT blocks that output a "parsed JSON object". And the topic they subscribe to is in the following...

True, the screenshot does not specify it's an SSD. But since these were intended as thin clients they normally are really silent...meaning no HDD and possibly not even a noisy fan. Looking up the specs for a Dell Wyse 5020 Thin Client reveals that it's even worse.....it's FLASH memory!! source...

That's a great deal! For that price and for just testing you can't go wrong. Let me know when your setup with VenusOS on a Rpi and Home Assistant with Node-Red on your thin-client. Then I'll try giving the steps to integrate the SmartShunt values into HA with the help of node-red and VenusOS...

That should be enough. I would be suspicous of the SSD though because of it's size it's either really old or a special type for thin clients. The specs say 32GB SATA so that might mean it's replaceable. I am not saying you have to replace it but it might not be designed for a lot of writes that...

sure, it works just like nearly every other rpi image that you download and flash to an SD card. ;) https://www.victronenergy.com/blog/2017/09/06/raspberry-pi-running-victrons-venus-firmware/ https://github.com/victronenergy/venus/wiki/raspberrypi-install-venus-image That should point you in...

Like I said I have no experience with SolarAssistant so I could not tell you if it will work together or not. All I can say is what I have done on my own setup to get the data into HA. There is indeed a big learning curve to master Home Assistant...I have had it running for about 5 years now...

With the local LAN MQTT on a VenusOS (rpi) everything you can see and do from the app is possible! I was even able to enable and disable the load output on a MPPT...but that's a little more complex than just reading the statistics. You can use MQTT-Explorer to see the data that is available and...

I have VenusOS installed on a raspberry pi for a little over a year now. Since I already had multiple rpi's that did not cost me anything extra. Then linked it to victron's VRM portal for nice statistics and for using the app without the need to be in bluetooth range. I have four MPPT's because...

I have it working through node-red showing everything and more in HA. ? The flow is a bit complex and took a while to figure out but this is what it looks like: It does require a VenusOS device with MQTT enabled on local LAN, which from your question I guess you do not have. Node red just...

I do 100% agree with having a HA specific section here! You got my vote! :)(y)

While it was literally freezing there were also a few hours of direct sun light! Just enough to get some statistics and see that the helper is working. Thanks again for the suggestions.

I have added the helper using the mppt_yield value as the input source. But I assume it won't work until some actual values are updated right? I have 0 watts of solar at the moment! :ROFLMAO: .... sunset is setting in. I can't select the helper as the solar input source yet unfortunately. I'll...

Thanks for the confidence boost! :):ROFLMAO: I do already limit the number of updates to Home Assistant at 5 second intervals from the Node-Red flow. I am using a function block before that right now to reformat the values from MQTT and send it to the HA sensor nodes. I was using that block for...