HardLabs

BreatheTrack

n1vaan·BreatheTrack·kicad/draft1.kicad_pcb

BreatheTrack PCB layout, top view — open source ESP32 board by n1vaan

About the BreatheTrack PCB

BreatheTrack is an open source ESP32 PCB design by n1vaan, published on GitHub. It is a 4-layer board measuring 45.1 × 68.9 mm, with 75 components from 39 distinct parts.

Its main chip is the ESP32-S3, from the ESP32 family. Other key parts include the AMS1117-3.3, MCP73831-2-OT and W25Q128JVS. By type, the board carries 28 capacitors, 22 resistors, 5 connectors, 5 diodes, 4 ICs and 3 inductors.

It belongs with the rf & radio, power & battery and dev boards & breakouts designs in this gallery.

BreatheTrack, from the project README
From the project README

Main components on the BreatheTrack

AMS1117-3.3ESP32-S3MCP73831-2-OTW25Q128JVS

BreatheTrack bill of materials (BOM)

75 components, 39 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AMS1117-3.3
U1
1
ESP32-S3
U2
1
MCP73831-2-OT
U3
1
W25Q128JVS
U4
1
AO3401A
Q1
1
C5261125
40MHz(10ppm)
Y1
1
C32346
32.768 kHz
Y2
1
USB_C_RECEPTACLE_USB2.0_14P
USB_C_Receptacle_USB2.0_14P
J1
1
SOLAR_IN
J2
1
CONN_01X02_PIN
Conn_01x02_Pin
J3
2
CONN_01X18_PIN
Conn_01x18_Pin
J4, J5
1
Antenna
AE1
1
C318884
BTN
BTN1
1
15PF
15pF
DNP1
1
Flash
Flash1
1
Reset
Reset1
1
D_SCHOTTKY
D1
3
LED
D2, D3, D4
1
SS14
D5
1
2NH
2nH
L1
Show 19 more
QtyPartRefs
1
4.7NH
4.7nH
L2
1
DNP
L3
10
10UF
10uF
C1, C3, C4, C6, C7, C12, C13, C18 +2
8
0.1UF
0.1uF
C2, C5, C11, C14, C16, C19, C23, C25
4
12PF
12pF
C8, C9, C27, C28
3
1UF
1uF
C10, C15, C24
1
10NF
10nF
C17
1
15PF
15pF
C20
1
DNP
C22
2
5.1K
R1, R2
2
33R
R3, R4
6
C17168
0R
R5, R9, R10, R11, R12, R13
1
DNP
R6
1
1K
R7
3
470R
R8, R14, R15
1
2K
R16
3
10K
R17, R18, R21
2
200K
R19, R20
1
100K
R22

BreatheTrack design files

The KiCad project lives in the n1vaan/BreatheTrack repository on GitHub; these links point at the commit this page was built from.

BreatheTrack: common questions

What microcontroller does the BreatheTrack use?

The BreatheTrack is built around the ESP32-S3, from the ESP32 family.

How big is the BreatheTrack PCB?

The BreatheTrack measures 45.1 × 68.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the BreatheTrack?

75 components, from 39 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 BreatheTrack design files?

From the n1vaan/BreatheTrack 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 BreatheTrack design in my own project?

The repository has no license, so all rights stay with n1vaan. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the BreatheTrack 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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