Oh ok.
I thought it could be a nice feature to have a RGB led to indicat whether the board is on/charging/faulty (ie, green, blue, red flashing).
Next iteration maybe ? 
I was going to indicate the state of the board with the single colored Led via different kind of flashing styles and rhythms.
RGB would be easier to distinct between states, because colors, but buttons with built-n RGB are not the cheapest… and you need more output pins on the MCU and on the connector.
I’ve been looking at the raphael chang bms software since i also have one of the boards. I’ve been considering doing a rewrite in rust for fun. The lack of debugger connections has stopped me for now. I’d also be interested in helping out with software compatible for both bmses.
I’ve taken a quick look at your schematic and really appreciate the debugging connections 
@Pimousse what’s the current state of your firmware. Is it still the version on Github? I’m currently trying to get the serial connection working on linux
Well, I worked a lot on it, but I didn’t try yet. Since @SimosMCmuffin told us that the HW design of the Battman was limited (even dangerous), I stopped investing time on this project.
Just pushed my current working folder : https://github.com/Peemouse/battman-firmware/tree/dev
Whats the expected price of these going to be? Do you need any beta testers?
The BOM is looking at this moment roughly about 60€ for a single main module and about 34€ for a batch of 100, but once I get the HW design tested and locked down I can move onto larger build batches, which will lower the component costs. I’ll have to later look into if it makes more sense to fabricate and and furniture the boards with a third party, or whether to build them in my own space.
I also don’t mind selling just the PCBs (+ possibly components) to those who want to assemble their own boards with the BOM available on github. Honestly I don’t want to nail down the price point to stone at this point in time, but I wouldn’t expect less than 70€ once all the costs have been included.
I will most likely need/want at some point, once the module makes it through my own performance tests and I fix any obvious HW mistakes. Once that time comes I will inform about it in this thread and open up some kind of application form for a limited amount of people. Modules might be provided free of charge, except for shipping and once the beta ends I will either let participants keep their modules for free-of-charge or pay for it with a discounted price for their help and effort.
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Hello there, I’m late and haven’t read the thread completely yet but Ivam very interested if the footprint is this size & it does 12s, discharge protection, anti spark & eswitch can I get in on 1 or 2?
I will read the thread later when I have time thanks for your efforts in producing this
Sorry, the OP is not up to date with the current state of the project. I’ll update it today, so it is up-to-date and new thread readers can more quickly understand what is being designed.
I would recommend starting to read from http://www.electric-skateboard.builders/t/flexibms-first-prototype-kicad-project-files-released-flexible-configuration-and-charging-bms/46117/23
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sounds awesome - can´t wait to test one
Thanks for the pointers, definitely want a split board here even better a stacked sandwich, I may try to make one or two.
Edit: I get it all now, the bms part is fully designed then we have the option on the switch side of the bosrd to size to discharge amps required, wonder what a pcb of the same size footprint could handle amps wise, also convenience to quickly swap out the switch board innovation 
So at last what’s up with this project? is there some demo vid of it somewhere?
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PCBs are being manufactured at the moment.
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Hopefully this project will succeed.
What would be the price for a 12S around 80A BMS setup?
and how flat would it be?
This project is just beginning and is in prototype stage. I don’t want to start promising any price points yet, because we haven’t even tested the first prototype, which’s PCBs are at the moment being manufactured. I’ll be updating this thread as progress happens.
for more info, refer to this post at this point: http://www.electric-skateboard.builders/t/flexibms-first-prototype-kicad-project-files-released-flexible-configuration-and-charging-bms/46117/162
These prices look fine if you can ensure the quality over long period of time. Book marked.
Update.
Components ordered at the beginning of week and have now arrived.
PCBs are in the country and if lucky I’ll be able to get them tomorrow, so I’ll be able to assemble the first board and do basic functionality checks on it during this weekend.
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Boards are here! I’m going to work on these during the weekend and try to progress towards functional prototype. No component has been soldered yet to the boards in the pictures, I was just placing the bigger components.
The balance circuitry is very dense (as I designed it), I guess I’l just have to try and solder the components on or cry and solder them on 
Here is the size difference to the old pre-alpha prototype board, and as cliche as it might sound, I thought to myself “oh wow, this board is pretty small” when I got it out of the packaging.
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Nice is there rosin in your tears? 
I lick and scratch pine trees in the morning for my natural daily rosin dose.
Or if I’m about to crash, I go straight for the good stuff.
EDIT: It’s a joke. Just in case somebody doesn’t know or understand the context.
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Haha good one…pine fresh