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Project Lab 3 BMS

nick19curtin·PowerSystemsPL-BMS·PCB/Project Lab 3 BMS.kicad_pcb

Project Lab 3 BMS PCB layout, top view — open source ESP32 board by nick19curtin

About the Project Lab 3 BMS PCB

Project Lab 3 BMS is an open source ESP32 PCB design by nick19curtin, published on GitHub. It is a 2-layer board measuring 122.7 × 105.5 mm, with 46 components from 22 distinct parts.

Its main chip is the ESP32-DEVKIT-V1, from the ESP32 family. Other key parts include the BQ76920PW. By type, the board carries 17 capacitors, 10 resistors, 4 diodes, 3 transistors, 2 ICs and 2 connectors.

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

Main components on the Project Lab 3 BMS

BQ76920PWESP32-DEVKIT-V1

Project Lab 3 BMS bill of materials (BOM)

46 components, 22 distinct parts.

QtyPartRefs
1
BQ76920PW
U1
1
ESP32-DEVKIT-V1
U3
2
IRLR7843
Q1, Q2
1
PMOS
Q3
1
Conn_01x02
J1
1
Conn_01x06
J2
3
1k
RBAT+1, RBAT-1, RCELL4
3
1k
RCELL1, RCELL2, RCELL3
1
Start Swtich
SW1
1
10k
TH1
1
1.25V
D1
1
D_Zener
D2
1
SMCJ45A
D3
1
D
D4
7
0.1uF
C1, C2, C5, C9, C16, C17, C18
8
1uF
C3, C4, C6, C7, C12, C13, C15, C19
1
4.7uF
C8
1
7400pF
C14
2
4.7k
R2, R3
5
1M
R10, R11, R13, R14, R15
Show 2 more
QtyPartRefs
1
1k
R12
2
100
R19, R20

Project Lab 3 BMS design files

The KiCad project lives in the nick19curtin/PowerSystemsPL-BMS repository on GitHub; these links point at the commit this page was built from.

Project Lab 3 BMS: common questions

What microcontroller does the Project Lab 3 BMS use?

The Project Lab 3 BMS is built around the ESP32-DEVKIT-V1, from the ESP32 family.

How big is the Project Lab 3 BMS PCB?

The Project Lab 3 BMS measures 122.7 × 105.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Project Lab 3 BMS?

46 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Project Lab 3 BMS design files?

From the nick19curtin/PowerSystemsPL-BMS repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Project Lab 3 BMS design in my own project?

The repository has no license, so all rights stay with nick19curtin. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Project Lab 3 BMS without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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