DIY 6S to 12S BMS with CAN - DieBieMS

Everything that can be done via USB, can be done via bluetooth as well using latest DieBieMS Tool. I did it with a bluetooth module that is connected to VESC and VESC is connected to DieBieMS via CAN.

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Hi Roman, do you have “push to start” wired on your board?

@rpasichnyk So Roman -Any way you can put a blue tooth module in DieBie BMS to talk to DieBie BMS tool or metr app without involving any vesc?

@bevilacqua Yes, push to start works for me with 6364 single motor. @SkaterBoy58 no way

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Sorry for the continued newb questions here but - How does this ‘smart’ BMS work when it comes to new smart VESCs like the FOCBOX Unity?

They both have built in power switches, they both have push-to-start capabilities, and such. So how do you establish control of these types of features between the two? Does it become a case of one master and the other in a slave configuration over CAN similar to how two regular FOCBOXes would interact?

:thinking:

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This would be better asked on the Focbox unity thread since i recall seeing a post about this on there or something similar. Good question though, @Deodand, is the unity’s canbus port a simply plug in for the diebiebms?

No problem!

I wonder just as wel on what would be the best way to implement the Unity with the BMS, on protocol level there wont be a problem, on the power electronics side there might be, I have no idea how they implemented the switch but there will very likely be a neat way for them to collaborate.

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Yep we will get it sorted and share! Should be fairly straightforward to figure out.

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I saw they implemented high side switching witch lm5060 which I also considered for my switch. It would be sufficient to tie the enable pin of this ic to gnd and have the bms to cope with all of the power functions.

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I need on of this where I can get it and how much shipping included to US

You can still get onboard :smile: not sure how much shipping to the US is though. @Samau18 may be able to answer that

Charge current is only 15A Question My setting for my battery min is 15 2 motor This mean if I break really hard I have 30A come to my battery I believe this bms will not work correct ???

You will be charging trough the discharge/load port (as you should), this will be no problem at all!

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I just read the thread about the metr.pro upgrade, just awesome progress!

But now, the VESC is kind of the CAN master when using metr.pro and need to be powered on before the communication gets active. I prefer not having my VESCs energized for an hour or longer during charge.

Does the D.B.MS forward CAN data? if so I would be able to connect the metr.pro to the BMS serial port instead of to the VESC. This would open up some possibilities:

  • The VESC would not have to be powered-on to monitor the charge process or battery state.
  • Metr.pro would be able to send push messages when charge is done or if there is an issue
  • With push-2-start I would be able to check my battery state before rolling off
  • At some point the BMS could also store VESC logging to the SDcard.
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So I might have missed it but what is the current amp capacity for discharge of the unit?

So I am waiting for my DieBie to arrive. What is the recommended charger for a 12s setup? What are you guys using.

If I have read correct info. It is recommended that charger is about 3V higher than the full charged voltage of battery.

https://www.meanwell.com/productPdf.aspx?i=327

https://eu.mouser.com/ProductDetail/MEAN-WELL/HLG-480H-48A?qs=u4fy%2FsgLU9PVn6yM5LRg%2bg%3D%3D

Ive read that these could be good for the DieBieMS. Could be useful fo you :slight_smile:

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So what is the status of the phone app? Is there one for IOS?

metr.pro works like a charm, not for configuration though

damnz, those meanwell’s are expensive :anguished:

for my 10S setup I use an aliexpress power supply, 42v 3A, I paid something in the range of 25€ just search for “10s lithium charger”

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