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Esp32-sensor board

marwantm·esp32-sensor-board·Source Files/Esp32 Sensor Board.kicad_pcb

Esp32-sensor board layout, top view — open source ESP32 board by marwantm
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About the Esp32-sensor board

Esp32-sensor board is an open source ESP32 PCB design by marwantm, published on GitHub. It is a 4-layer board measuring 99.6 × 55.9 mm, with 80 components from 40 distinct parts.

Its main chip is the ESP32-C3-WROOM-02-H4, from the ESP32 family. Other key parts include the MCP73871, BME280, CP2102N-AXX-XQFN20, USBLC6-2SC6 and W25Q32JVSSIQ. By type, the board carries 32 resistors, 22 capacitors, 7 ICs, 6 LEDs, 5 connectors and 3 transistors.

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

From the project

ESP32-C3 IoT sensor node with USB-C power path management — KiCad PCB design project

A 4-layer ESP32-C3 IoT sensor board with onboard LiPo charging, SD storage, and a multi-sensor front end, designed in KiCad by following Tech Explorations' full board-development pipeline tutorial — my most advanced build yet, covering the complete flow from schematic to manufacturing and assembly.

This board is built around the ESP32-C3-WROOM-02, a RISC-V Wi-Fi/BLE module, paired with a small sensor suite (environmental, audio, and light), onboard SPI flash, microSD storage, and a full LiPo battery charging path — a compact, self-contained IoT sensor node platform.

Esp32-sensor board, from the project README
From the project README

Main components on the Esp32-sensor board

MCP73871BME280ESP32-C3-WROOM-02-H4CP2102N-AXX-XQFN20USBLC6-2SC6W25Q32JVSSIQMAX4466EXK

Esp32-sensor board bill of materials (BOM)

80 components, 40 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP73871
U1
1
BME280
U2
1
ESP32-C3-WROOM-02-H4
U3
1
CP2102N-AXX-XQFN20
CP2102N-Axx-xQFN20
U4
1
USBLC6-2SC6
U5
1
W25Q32JVSSIQ
U6
1
MAX4466EXK
U7
1
TEMT6000X01
Q1
2
BC817
Q2, Q3
1
SS-52400-003
J1
1
B2B-PH-SM4-TB
J2
1
GSD090012SEU
J3
1
CONN_01X04_PIN
Conn_01x04_Pin
J4
1
CONN_01X05_PIN
Conn_01x05_Pin
J5
1
0ZCH0110AF2E
F1
1
CMC-5042PF-AC
MK1
1
BOOT
S1
1
RESET
S2
1
LM1117MPX-3.3
VR1
3
LTST-C170KRKT
LED1, LED4, LED6
Show 20 more
QtyPartRefs
1
LTST-C170TBKT
LED2
2
LTST-C170GKT
LED3, LED5
12
0.1U
0.1u
C1, C2, C5, C8, C10, C13, C14, C15 +4
4
10U
10u
C3, C4, C7, C12
4
1u
C6, C11, C19, C22
1
4U7
4u7
C9
1
10U
10u
C17
9
10K
10k
R1, R2, R19, R21, R26, R28, R30, R33 +1
2
5K1
5k1
R3, R4
1
2k
R5
1
20K
20k
R6
6
470
R7, R8, R9, R10, R14, R18
1
1k
R11
1
22K1
22k1
R12
1
47K5
47k5
R13
4
50
R15, R16, R17, R20
1
R
R23
2
4K7
4k7
R24, R25
2
1M
R27, R29
1
100K
100k
R31

Esp32-sensor board design files

The KiCad project lives in the marwantm/esp32-sensor-board repository on GitHub; these links point at the commit this page was built from.

Esp32-sensor board: common questions

What microcontroller does the Esp32-sensor board use?

The Esp32-sensor board is built around the ESP32-C3-WROOM-02-H4, from the ESP32 family.

How big is the Esp32-sensor board?

The Esp32-sensor board measures 99.6 × 55.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Esp32-sensor board?

80 components, from 40 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-sensor board design files?

From the marwantm/esp32-sensor-board 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-sensor board design in my own project?

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

Can I test firmware for the Esp32-sensor board 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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