Congrats. You did a great job with DIYBMS and the current monitor. Design and software are well executed. Give yourself the credits you deserve. No need for V**tron to validate. You did, they match very well, wasn't much of a surprise to me. Nice job. Take care! :)
Very well done sir. Getting validity for your hard work is always a rewarding thing. Pretty good considering you just used off-the-shelf components/meters to get your readings initially :)
Great work Stewart! I would love to see some 4S / 8S / 16S cell module boards, as well as just plain monitor boards without balance resistors. I am modifying my 16S bank this winter to turn on a “cheap 5A active balancer” when cells start balancing.
I did start on a 12-24S board, but the availability of the chips in that are non-existent. So I'm going to try and look at a dedicated 16S board, as that would also be useful for me. The newer controller code (not yet released) now also includes relay rules for balancing - when the cells drift apart.
not everyone uses mqtt, some people push directly into influxdb or prometheus remote write. Good job on the AH counting as you know most just use the voltage reference but you would need to occasionally test the AH rating of your battery, which depends on the cycle usage and can be calculated based on that.
Wish i had a diy bms to play with but the cips are a nighmare to find. I have 40 Kwh of storage and using crappy dally bms. I have 14 V 1.44 modules but no chips for them , i have the smart shunt board but no chips for it and so on.
Agree - the chips are difficult, unfortunately not much I can do about that. The controller is parts are fully in stock at JLCPCB at the moment, and changing the modules to use different ATTINY chips has reduced cost.
I think my three SmartShunts are further apart of each other than your one compared to the DIYBMS Current Monitor. Although they do not make such nice sounds ;-)
Apologies for a direct reply, but I tend to tell things as I see them. Others may take a different view. I've been watching you DIY BMS since the early days and would like to get onboard. I can see it is technically superior but the stumbling block I see is cost. With two 48v batteries, and more planned in the future, I am going to need 32 circuit boards at for the current system plus the main boards plus cabling. I can see it working well with a single 12 system, but there are problems with larger systems. The current Chinese BMS's don't yet have a good solution as the software normally has issues, so there is a gap in the market, but I'm not sure this fills that gap. The opportunity is there to produce a BMS with high current balancing that actually works well, at an affordable cost. Going forward the latter needs to speak to Victron which I think you have already sorted. I continue to watch with interest, but unfortunately I cannot afford to go down this current route. All the best
The individual cell monitoring boards can be produced for less than 3USD each in smallish quantity. However I'm also looking at an all in one board, to remove the individual boards
![PylonTech Battery Emulation & Lots More Feb 2023 Update [diybms]](http://i.ytimg.com/vi/K-maIiTLVS4/mqdefault.jpg)
![PylonTech Battery Emulation & Lots More Feb 2023 Update [diybms]](/img/tr.png)
![แฉกลโกงงานวัด 2024 [ โกงมั้ยครับ ep.106 ] | DOM](http://i.ytimg.com/vi/taC5dpP3HXA/mqdefault.jpg)
Congrats. You did a great job with DIYBMS and the current monitor. Design and software are well executed. Give yourself the credits you deserve. No need for V**tron to validate. You did, they match very well, wasn't much of a surprise to me. Nice job. Take care! :)
That's the trouble, once you build something, there's nothing to benchmark against to know if its working properly!!
Thanks again for your great work Stuart, another great video
No worries
Excellent work Stuart. Nice to know your gear holds its own again the big boys.
Thanks 👍
Wow Nice ... waiting for the new circuit hopefully with chips we can get our hands on
I hope so too, trying to move to the INA229 chip - which is SPI rather than i2c, these do seem to be available.
Very well done sir. Getting validity for your hard work is always a rewarding thing. Pretty good considering you just used off-the-shelf components/meters to get your readings initially :)
Thank you very much!
Great work Stewart!
I would love to see some 4S / 8S / 16S cell module boards, as well as just plain monitor boards without balance resistors.
I am modifying my 16S bank this winter to turn on a “cheap 5A active balancer” when cells start balancing.
I did start on a 12-24S board, but the availability of the chips in that are non-existent. So I'm going to try and look at a dedicated 16S board, as that would also be useful for me.
The newer controller code (not yet released) now also includes relay rules for balancing - when the cells drift apart.
which connectors are those at 0:27?
Outstanding work and Great share 🎉
Many thanks
Brilliant work! well done
Thank you! Cheers!
👍
not everyone uses mqtt, some people push directly into influxdb or prometheus remote write. Good job on the AH counting as you know most just use the voltage reference but you would need to occasionally test the AH rating of your battery, which depends on the cycle usage and can be calculated based on that.
Yes, DIYBMS supports influxdb natively - I just don't use that myself.
Any plans to support the SmartShunt as current sensor input to DiyBMS? :-) hint hint…
I did wonder about doing that - but would require quite a lot of changes to the controller to add on another serial port.
@@StuartPittaway but its ready to run without soldering :-) and its available
Thanks Stuart 👍
Thanks for watching.
Do you sell ready made shunts based on your DiyBms? Great video by the way 🎉
No I don't - although as mentioned in the video, I'm going to try and change the design to make it easier to build/find chips.
Wish i had a diy bms to play with but the cips are a nighmare to find. I have 40 Kwh of storage and using crappy dally bms. I have 14 V 1.44 modules but no chips for them , i have the smart shunt board but no chips for it and so on.
Agree - the chips are difficult, unfortunately not much I can do about that. The controller is parts are fully in stock at JLCPCB at the moment, and changing the modules to use different ATTINY chips has reduced cost.
@@StuartPittaway how about the parts for the shunt. Ina 228 is out of stock , the canbus chip as well.
4.03 when putting a wire in a spring terminal, you must not use a crimp
The Victron cable is supplied pre-terminated with a ferrule!
@@StuartPittaway then they do not know the rules :)
You need longer ferrules.
I think my three SmartShunts are further apart of each other than your one compared to the DIYBMS Current Monitor. Although they do not make such nice sounds ;-)
Thats good to hear - I think I've got a faulty SmartShunt connector, so will likely need to warranty return it.
Apologies for a direct reply, but I tend to tell things as I see them. Others may take a different view.
I've been watching you DIY BMS since the early days and would like to get onboard. I can see it is technically superior but the stumbling block I see is cost.
With two 48v batteries, and more planned in the future, I am going to need 32 circuit boards at for the current system plus the main boards plus cabling.
I can see it working well with a single 12 system, but there are problems with larger systems.
The current Chinese BMS's don't yet have a good solution as the software normally has issues, so there is a gap in the market, but I'm not sure this fills that gap.
The opportunity is there to produce a BMS with high current balancing that actually works well, at an affordable cost.
Going forward the latter needs to speak to Victron which I think you have already sorted.
I continue to watch with interest, but unfortunately I cannot afford to go down this current route.
All the best
The individual cell monitoring boards can be produced for less than 3USD each in smallish quantity. However I'm also looking at an all in one board, to remove the individual boards
@@StuartPittaway way to go with single board Stuart !
@@StuartPittaway would love to see some active balancing of 2a in that, and i think you would check every box there is
@@StuartPittaway Thanks, I look forward to the new board.