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1 year ago 1743
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This is a work in progress collaboration between all my YouTube users that want to join.

The first video for colaboration can be found here:

This is a smart 18650 BMS with STM32 The Github project is at:

Please leave your comments below on how to improve the design and I will update it or one of the team members.

Usfule links:


BMS Design


ID Name Designator Footprint Quantity Mounted
1 f426025f26228162dab8da65d9abf4e1 B1,B2,B3,B4 BATTERY-1 4 Yes C70376
2 6d8ff3acb54747d9b12344aa2f521162 U1 QFN-28_5X5X05P 1 Yes C88048
3 d2a3f5fbb7b69b67267583d6179acd3e R1 2010 1 Yes C60104
4 2191314250ed43a796b57d45825575c3 R2,R3,R4,R5,R6,R7,R8,R9 AXIAL-0.3 8 Yes
5 8106aac1571442ad9e95d801c9125278 USB1 CONN_USB_MICRO-B 1 Yes
6 0b6ea66f1a77ef3069b26dadb3d73791 P1 HDR-1X2/2.54 1 Yes C49661
7 7c4042779cea4abdf4b201e0d3ecfdb3 P2 HDR-2X2/2.54 1 Yes C66690
8 5ff94ab46594cf6878cdf5028db6a090 Q1 TO-220(TO-220-3) 1 Yes C2574


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Comments (5)

Naasik Hendricks Reply

Hey, I am not sure if you think of using a charging IC? That has a gas gauge or temp sensor?

Or a MOSFET base controller system?

Weblearning Reply

@naasikhendricks The hole idea will be that the STM32 will do everything that you wrote below without adding a lot of parts. The Mosfet still need to be added.

Naasik Hendricks Reply

Hi I had time to investigate the circuit. I have a few questions regarding the voltage divider. Those resistors are supposed to create a PD that at max it reads 3.2v on the ADC.

dale bliss Reply

Hi is this still going - I am looking at trying to get some boards done up.

New to all pcb coding but

Weblearning Reply

@dalebliss There where some people interested but no one wanted to spend time on developing this.

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