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CoCEL-Battery-Monitor

CoCEL-Team-Drone·CoCEL-Battery-Monitor·1_PCB/PowerMonitor.kicad_pcb

CoCEL-Battery-Monitor PCB layout, top view — open source STM32 board by CoCEL-Team-Drone

About the CoCEL-Battery-Monitor PCB

CoCEL-Battery-Monitor is an open source STM32 PCB design by CoCEL-Team-Drone, published on GitHub. It is a 4-layer board measuring 50 × 44.5 mm, with 61 components from 30 distinct parts.

Its main chip is the STM32G031K8UX, from the STM32 family. Other key parts include the BQ76942 and BD9E302EFJ. By type, the board carries 25 capacitors, 25 resistors, 4 ICs, 2 jumpers, 2 diodes and 2 inductors.

It belongs with the power & battery designs in this gallery.

From the project

LiPo battery monitor for 4~6s multicopters

A high-current LiPo battery monitor with individual cell voltage sensing

[!IMPORTANT] This project is currently under development! Especially cell voltage monitoring circuit. Please stay tuned for future updates.

The CoCEL LiPo Battery Monitor is a dedicated power management and monitoring solution for multicopters. It measures total pack voltage, discharge current, and individual cell voltages, interfacing with a FC via UART.

CoCEL-Battery-Monitor, from the project README
From the project README

Main components on the CoCEL-Battery-Monitor

BQ76942STM32G031K8UXBD9E302EFJ

CoCEL-Battery-Monitor bill of materials (BOM)

61 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ76942
U1
1
STM32G031K8UX
STM32G031K8Ux
U2
2
BD9E302EFJ
U3, U4
1
STL325N4LF8AG
Q1
2
JUMPER_2_SMALL_OPEN
Jumper_2_Small_Open
JP1, JP2
1
S1AFL
D1
1
LED
D2
1
4.7UH
4.7uH
L1
1
3.3UH
3.3uH
L2
7
0.22UF
0.22uF
C1, C2, C3, C4, C5, C6, C7
1
1UF
1uF
C8
1
0.47UF
0.47uF
C9
2
0.1UF
0.1uF
C10, C14
1
0.1uF
C11
1
0.47uF
C13
4
0.1UF
0.1uF
C15, C17, C22, C23
2
10UF
10uF
C16, C21
2
6.8NF
6.8nF
C18, C24
4
22UF
22uF
C19, C20, C25, C26
7
47
R1, R2, R3, R4, R5, R6, R7
Show 10 more
QtyPartRefs
4
100
R8, R10, R11, R22
1
1M
R9
1
0.001
R12
5
10K
10k
R13, R17, R21, R26, R27
1
430K
430k
R14
1
82K
82k
R15
1
6.8K
6.8k
R18
1
75K
75k
R19
1
24K
24k
R20
2
10k
R28, R29

CoCEL-Battery-Monitor design files

The KiCad project lives in the CoCEL-Team-Drone/CoCEL-Battery-Monitor repository on GitHub; these links point at the commit this page was built from.

CoCEL-Battery-Monitor: common questions

What microcontroller does the CoCEL-Battery-Monitor use?

The CoCEL-Battery-Monitor is built around the STM32G031K8UX, from the STM32 family.

How big is the CoCEL-Battery-Monitor PCB?

The CoCEL-Battery-Monitor measures 50 × 44.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the CoCEL-Battery-Monitor?

61 components, from 30 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the CoCEL-Battery-Monitor design files?

From the CoCEL-Team-Drone/CoCEL-Battery-Monitor repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the CoCEL-Battery-Monitor design in my own project?

The repository has no license, so all rights stay with CoCEL-Team-Drone. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the CoCEL-Battery-Monitor without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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