As you might know last year I decided to make a first, beta production of this open source project: https://github.com/DieBieEngineering/DieBieMS designed by the forum member @JTAG
It definitely took a while since any imaginable delay occurred and piled up (even the first national strike of the logistic company UPS ).
Now that some users had the chance to try this BMS on their board, the response has been pretty good so far and no major problems have been reported.
The setup is dead easy via usb and vesc tool: simple commands on the terminal will allow you to set up your custom battery configuration and will let you know the detailed status of your battery
I am looking into doing some changes on non critical components for example putting XT90 instead of LOAD screwholders, finding a cheaper sound buzzer, removing unnecessary connectors.
This way I can keep the price steady (last time was 104eur) and include compensation for the creator and myself.
Order placed, canāt wait Iāve been wanting one of these since I first saw the thread! How much would be saved going with XT-90 instead of LOAD screwholders? I was hoping to have that featureā¦ Any way to make that optionalā¦?
@uigiroux not much since the screwholder were already very efficient (175 max load by datasheet or 120a by mouser). The reason I want to eliminate them is that they are damn expensive and non-existing in China.
@Minim once the minimum quantity is reached, letās say end of April. Give around 5-6 weeks for production, 1 week to ship stuff to me, 1 week for me to have all orders out (since this time I wont have to install firmware and extra components)
Nope that would be a mess.
I will change the screwholders footprints to become solder pads for wires.
Then the 10awg coming from the xt90 will be soldered on these pads.
The only steps you will have to follow are these ones:
1)you need a specific version of the vesc tool that I am going to send you via email
2)connect the vesc via usb while itās still connected to the battery pack
3)go to the connection tab; if you can find a āusb serialā device, connect to it. If you donāt find any available device then you need to install these drivers https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers and try again
4)once you are connected, go to the terminal tab; type help and enter; this lines will show up:
As you can see you can type (for example) config_set_ah 20 and enter. The bms will now consider your battery as a 20ah battery. The other commands work in the same way.
After you are done with the customizations type config_write and enter.
Thatās it
@uigiroux the goal would be for the price to be <=104eur including the donation, cables and VAT.
Tomorrow I will get a quotation for a custom fuse-holder which is a feature I really want to keep
What a convenient timing! Signed up for one.
Iām starting with my own project soon, been browsing this forum a lot to get ideas and inspiration. This BMS caught my attention and I always wanted to use one for my battery pack.
Thanks for doing this group buy!
Also keep us updated as to how close we getā¦I will be willing to change my quantity as Iām sure others might if we get close to the quantity neededā¦