Hello Stuart, the controller is great. You just don't get all of the cips at the moment. Is there an alternative for the Canbus chip? I cannot save the relay settings. Does he do this on the SD card? How must the card be formatted? Greetings Detlev
@@StuartPittaway It's sure nice having a pcb fab do soldering of smd components, personally I like soldering all components myself. That skill set and equipment to do it easily is a worthwhile endeavor.
@@GENcELL2014 I agree, I enjoy building from a blank PCB, however in this case I was building 30 boards so that would have been over 1,000 parts to assemble!
Yeah at that level a PnP or pick and place is already needed, in combination with a paste stencil and stencil holder. Check out the TH-cam channel called BAXEDM. His most recent vid is called "Home shop small series PCBA production". Shows a diy PnP, stencil, stencil holder, and vapor phase reflow oven or condensation soldering. You should check out vapor phase reflow, it's a affordable way to reflow boards and works better than IR or hot air reflow ovens. In the process of creating a similar setup to BAXEDM for 20-100+ pcb runs.
how much would this bms cost fully finished with other pcbs for 12v system? i havent done any smd work and i dont have tools for that... thats why im thinking baybe i could buy fully finished and shipped to Latvia
Hi Stuart, and first congrats for that awesome work. I have a silly question I can't get out of my head: Instead of wasting the extra energy through resistors, what about feeding it to an (array of) supercapacitor(s) though a buck converter? The buck converter would deliver 2.7V, thus make it possible to use a single SC or parallel mounted SCs without the need of a bms that... would dissipate the extra power to keep the SCs balanced. That power would then be available to contribute to batteries charging. I know it sounds too good to be true, and more intelligent persons than me must have thought about it before. What do think about that idea?
@@StuartPittaway Thanks for your quick answer. By "well balanced", do you mean once it has been initially balanced, or do the cells need to be as well matched as possible so the LB isn't always correcting ?
Hi stuart any intrest in developing a multi-cell bms to compliment the single cell units you make? Looking at less parts for a larger build like 13-16s single boards, your slaves and masters would make a great d.i.y ess
The existing design doesn't make it easy to move to a multi-cell BMS (all on one board) it would turn out to be roughly the same cost, but none of the flexibility
@@StuartPittaway please development one that works with your new master i myself have 24 modules 13s 52a and finding a solution where i can monitor all the modules one place and not buy a house is fustrating... but keep up your work you have provided a cost effective reliable solution for us d.i.y guys
P.s the cost of your system isnt an issue for me its wanting to monitor 312 cells in the 24 modules and using the singles would take up more space than i would like to.
@@StuartPittaway i saw all you video,im using leaf cells for my offgrid and interested in you DIYBMS V4.im new to this and will contact you from the said forum.
![16S "all-in-one" release and installed [DIYBMS]](http://i.ytimg.com/vi/xVn2-6Keq2A/mqdefault.jpg)
Impressive to see your work grow and finally coming alive.
Lot to learn from.
thanks
Thanks for watching!
Congratulations on 40 Patreons 🎉!! And again, congratulations on 2,000 TH-cam subscriptions.🎉🎉
Thank you
Impressive work Stuart.
Man! I almost fall asleep to this music.
2k subs! I like the test code Stuart. Nice one
Thanks 👍
Super nice! Once again congratulations on your project!
Thank you
A great job, I just received version 4.21 just after the last update
Thanks
This looks great! A standalone system 😍 I must dig deeper. Thanks you and all who worked on it
Glad you like it!
I absolutely cannot wait to get one Stuart -- I WILL be replacing the controller in my setup with it -- LCD and all.
Stuart -- I highly recommend the hotplate method of reflow for this board! Your components are excellent for low-temp solder paste reflow.
Good idea
looks nice with the patreon names on it :)
I think so too!
Hello Stuart, the controller is great. You just don't get all of the cips at the moment. Is there an alternative for the Canbus chip? I cannot save the relay settings. Does he do this on the SD card? How must the card be formatted?
Greetings Detlev
Hello, no alternative for the canbus chip at the moment, although you can build the controller without it.
Hi Stuart, I'd recommend a hot air board preheater at 150C, it'll make hot air soldering much easier.
Good thinking, although I only needed to do the 1 part on these boards.
@@StuartPittaway It's sure nice having a pcb fab do soldering of smd components, personally I like soldering all components myself. That skill set and equipment to do it easily is a worthwhile endeavor.
@@GENcELL2014 I agree, I enjoy building from a blank PCB, however in this case I was building 30 boards so that would have been over 1,000 parts to assemble!
Yeah at that level a PnP or pick and place is already needed, in combination with a paste stencil and stencil holder.
Check out the TH-cam channel called BAXEDM. His most recent vid is called "Home shop small series PCBA production". Shows a diy PnP, stencil, stencil holder, and vapor phase reflow oven or condensation soldering. You should check out vapor phase reflow, it's a affordable way to reflow boards and works better than IR or hot air reflow ovens.
In the process of creating a similar setup to BAXEDM for 20-100+ pcb runs.
btw are you selling any extra controller board you have?
Yes, although at the moment I'm not sure if there will be any left - drop me a note on the forum and I'll see what I can do.
Can I connect one battery pack to each other to communicate and balance each other?
I'm not sure what you mean.
Nice, i see two onboard relays but on the old controller we had 4 with the external board, can the external board still be used with this or ?
This board has 2 physical relays and 2 solid state ones.
how much would this bms cost fully finished with other pcbs for 12v system? i havent done any smd work and i dont have tools for that... thats why im thinking baybe i could buy fully finished and shipped to Latvia
Hello, the open energy monitor shop may stock parts/completed boards at some point (currently out of stock) shop.openenergymonitor.com/diybms/
@@StuartPittawayBIG TNX ;) i will buy one full set for my 12v 18650s ;)
What price does the plate with the SMD, and the pieces for welding
If you order from JLCPCB, its about $25-$30USD
Are these available from jlcpcb now?
Yes you can order from JLCPCB, there are massive world wide shortages of chips at the moment so they may not have all the parts
Congratulations Top Work!!!
Thank you!
Hi Stuart, and first congrats for that awesome work. I have a silly question I can't get out of my head:
Instead of wasting the extra energy through resistors, what about feeding it to an (array of) supercapacitor(s) though a buck converter?
The buck converter would deliver 2.7V, thus make it possible to use a single SC or parallel mounted SCs without the need of a bms that... would dissipate the extra power to keep the SCs balanced.
That power would then be available to contribute to batteries charging. I know it sounds too good to be true, and more intelligent persons than me must have thought about it before.
What do think about that idea?
What you describe sounds similar to active balancing boards. In a well balanced system, the BMS balancing should hardly ever kick in.
@@StuartPittaway Thanks for your quick answer. By "well balanced", do you mean once it has been initially balanced, or do the cells need to be as well matched as possible so the LB isn't always correcting ?
@@reneonier well balanced in that they have the same capacity and ideally same age. In a perfect world, brand new!
Do you sell these boards? Or would you sell these programmed?
I don't unfortunately.
Very nice.
Thank you
Looking great!
Thank you! Cheers!
nice video and not too loud music :-)
Glad you liked it!
hi, this bms for how many s" of battery is?
Its flexible and scales to large battery sizes
Hi stuart any intrest in developing a multi-cell bms to compliment the single cell units you make? Looking at less parts for a larger build like 13-16s single boards, your slaves and masters would make a great d.i.y ess
The existing design doesn't make it easy to move to a multi-cell BMS (all on one board) it would turn out to be roughly the same cost, but none of the flexibility
@@StuartPittaway please development one that works with your new master i myself have 24 modules 13s 52a and finding a solution where i can monitor all the modules one place and not buy a house is fustrating... but keep up your work you have provided a cost effective reliable solution for us d.i.y guys
P.s the cost of your system isnt an issue for me its wanting to monitor 312 cells in the 24 modules and using the singles would take up more space than i would like to.
@@roqm1248 what type of battery do you have to have 312 cells??
@@StuartPittaway i can send you pictures if you would like to send email...i dont se an email for you on this page.
whats the music
I can't remember now, it was a royalty free one from TH-cam audio library
Would you sell me 1 to test?
I don't have any to sell sorry. Perhaps on the forum, somebody may have spare units.
@@StuartPittaway no worries.
Hi friend can i have your email.
Sorry I don't give that out publicly - if you want to contact me directly, send me a message via the OpenEnergyMonitor forum. Thanks.
@@StuartPittaway i saw all you video,im using leaf cells for my offgrid and interested in you DIYBMS V4.im new to this and will contact you from the said forum.