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ESP32 IoT Dev Board

EngMeesh·ESP32_IoT_Dev_Board

ESP32 IoT Dev Board layout, top view — open source ESP32 board by EngMeesh
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About the ESP32 IoT Dev Board

ESP32 IoT Dev Board is an open source ESP32 PCB design by EngMeesh, published on GitHub under the MIT license. It is a 4-layer board measuring 82.9 × 53.8 mm, with 85 components from 42 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 33 resistors, 25 capacitors, 7 ICs, 6 LEDs, 5 connectors and 3 transistors.

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

From the project

A custom 4-layer IoT development board based on the ESP32-C3, featuring integrated LiPo battery management, a CP2102N USB-UART bridge, MicroSD support, and onboard environmental/audio sensors for embedded engineering applications.

A custom 4-layer IoT development board based on the ESP32-C3, featuring integrated LiPo battery management, a CP2102N USB-UART bridge, MicroSD support, and onboard environmental/audio sensors for embedded engineering applications.

This repository contains the KiCad 10 design files, schematics, and manufacturing data for a custom Internet of Things development board built around the ESP32-C3-WROOM-02-H4 module. The board is designed for educational purposes, sensor integration testing, and embedded systems prototyping. The physical PCB silkscreen attributes the design directly to Eng. Meshal…

ESP32 IoT Dev Board, from the project README
From the project README

Main components on the ESP32 IoT Dev Board

MCP73871BME280ESP32-C3-WROOM-02-H4CP2102N-Axx-xQFN20USBLC6-2SC6W25Q32JVSSIQMAX4466EXK

ESP32 IoT Dev Board bill of materials (BOM)

85 components, 42 distinct parts.

QtyPartRefs
1
MCP73871
U1
1
BME280
U2
1
ESP32-C3-WROOM-02-H4
U3
1
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
J4
1
Conn_01x05_Pin
J5
2
0ZCH0110AF2E
F1, F2
1
CMC-5042PF-AC
MK1
1
Boot
S1
1
Reset
S2
1
LM1117MPX-3.3
VR1
3
LTST-C170KRKT
LED1, LED4, LED6
Show 22 more
QtyPartRefs
2
LTST-C170GKT
LED2, LED5
1
LTST-C170TBKT
LED3
12
0.1u
C1, C2, C5, C8, C10, C13, C14, C15 +4
4
10u
C3, C4, C7, C12
3
1u
C6, C11, C22
1
4.7u
C9
3
10n
C17, C24, C25
1
10u
C19
1
100p
C20
7
10k
R1, R2, R19, R23, R32, R33, R34
2
5.1k
R3, R4
3
2k
R5, R26, R28
1
20k
R6
6
470
R7, R8, R9, R10, R14, R18
2
1k
R11, R30
1
22.1k
R12
1
47.5k
R13
4
50
R15, R16, R20, R22
1
35WR100KLFTR
R17
2
4.7k
R24, R25
2
1M
R27, R29
1
22k
R31

ESP32 IoT Dev Board design files

The KiCad project lives in the EngMeesh/ESP32_IoT_Dev_Board repository on GitHub; these links point at the commit this page was built from.

ESP32 IoT Dev Board: common questions

What microcontroller does the ESP32 IoT Dev Board use?

The ESP32 IoT Dev Board is built around the ESP32-C3-WROOM-02-H4, from the ESP32 family.

How big is the ESP32 IoT Dev Board?

The ESP32 IoT Dev Board measures 82.9 × 53.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the ESP32 IoT Dev Board?

85 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESP32 IoT Dev Board design files?

From the EngMeesh/ESP32_IoT_Dev_Board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ESP32 IoT Dev Board design in my own project?

Yes, under the terms of its MIT license, which EngMeesh chose for the repository.

Can I test firmware for the ESP32 IoT Dev 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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