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ESP32 I²C Sensor Hub

Paa-Kwasi-04·Kicad_Projects·ESP32 I²C Sensor Hub/ESP32 I²C Sensor Hub.kicad_pcb

ESP32 I²C Sensor Hub PCB layout, top view — open source ESP32 board by Paa-Kwasi-04

About the ESP32 I²C Sensor Hub PCB

ESP32 I²C Sensor Hub is an open source ESP32 PCB design by Paa-Kwasi-04, published on GitHub. It is a 2-layer board measuring 59.8 × 75.5 mm, with 49 components from 30 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the CP2102N-AXX-XQFN24 and AMS1117-3.3. By type, the board carries 11 resistors, 9 capacitors, 3 ICs, 2 transistors, 2 connectors and 2 diodes.

It belongs with the iot & wireless and sensors designs in this gallery.

Main components on the ESP32 I²C Sensor Hub

ESP32-WROOM-32CP2102N-AXX-XQFN24AMS1117-3.3

ESP32 I²C Sensor Hub bill of materials (BOM)

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

QtyPartRefs
1
ESP32-WROOM-32
U1
1
CP2102N-AXX-XQFN24
CP2102N-Axx-xQFN24
U2
1
AMS1117-3.3
U3
2
PMOS
Q1, Q2
1
Barrel_Jack
J3
1
USB_C_PLUG_USB2.0
USB_C_Plug_USB2.0
P1
1
Fuse
F1
8
SM04B-SRSS-TB
Jst1, Jst2, Jst3, Jst4, Jst5, Jst6, Jst7, Jst8
1
TCA9548APWR
MUX2
1
10k
Rmux1
1
TestPoint_3.3V
TP_3.3V1
1
TestPoint_Barrel
TP_Barrel1
1
TestPoint_GND
TP_GND1
1
TestPoint_RX
TP_RX1
1
TestPoint_SCL
TP_SCL1
1
TestPoint_SDA
TP_SDA1
1
TestPoint_TX
TP_TX1
1
TestPoint_USB
TP_USB1
1
TestPoint_VIN
TP_VIN1
1
LED
D1
Show 10 more
QtyPartRefs
1
SS14
D2
1
100NF
100nF
C1
5
0.1µF
C2, C3, C5, C6, C9
1
10µF
C4
1
470UF
470uF
C7
1
0.1UF
0.1uF
C8
3
5.1KΩ
R1, R6, R7
5
10KΩ
R2, R8, R9, R11, R12
2
100KΩ
R4, R10
1
330Ω
R5

ESP32 I²C Sensor Hub design files

The KiCad project lives in the Paa-Kwasi-04/Kicad_Projects repository on GitHub; these links point at the commit this page was built from.

ESP32 I²C Sensor Hub: common questions

What microcontroller does the ESP32 I²C Sensor Hub use?

The ESP32 I²C Sensor Hub is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the ESP32 I²C Sensor Hub PCB?

The ESP32 I²C Sensor Hub measures 59.8 × 75.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP32 I²C Sensor Hub?

49 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 ESP32 I²C Sensor Hub design files?

From the Paa-Kwasi-04/Kicad_Projects 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 ESP32 I²C Sensor Hub design in my own project?

The repository has no license, so all rights stay with Paa-Kwasi-04. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ESP32 I²C Sensor Hub 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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