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ESP32-S3-SMALL

AMIFEX-IT·ESP32-S3-SMALL

ESP32-S3-SMALL PCB layout, top view — open source ESP32 board by AMIFEX-IT

About the ESP32-S3-SMALL PCB

ESP32-S3-SMALL is an open source ESP32 PCB design by AMIFEX-IT, published on GitHub under the MIT license. It is a 4-layer board measuring 45 × 45 mm, with 27 components from 17 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N16, from the ESP32 family. Other key parts include the LM1117MP-3.3. By type, the board carries 9 resistors, 6 capacitors, 4 connectors, 4 diodes, 2 ICs and 2 switches.

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

From the project

Custom ESP32-S3 development board designed in KiCad, featuring the ESP32-S3-WROOM-1-N8R8 module, custom schematic, PCB layout, and supporting hardware design files

A custom ESP32-S3 development board designed in KiCad, based on the ESP32-S3-WROOM-1-N8R8 module.

The project includes the complete hardware design workflow, from schematic capture and component selection to PCB layout and fabrication-ready files.

This project is a custom development board built around the ESP32-S3-WROOM-1-N8R8, providing a flexible platform for embedded systems, IoT, wireless communication, and general-purpose microcontroller applications.

ESP32-S3-SMALL, from the project README
From the project README

Main components on the ESP32-S3-SMALL

LM1117MP-3.3ESP32-S3-WROOM-1-N16

ESP32-S3-SMALL bill of materials (BOM)

27 components, 17 distinct parts.

QtyPartRefs
1
LM1117MP-3.3
U1
1
ESP32-S3-WROOM-1-N16
U2
1
Screw_01x02
J1
1
Conn_01x04
J2
1
Pin 2x5
J3
1
Pin 2x3
J4
1
SW_SPST
SW1
1
SW_SPST
SW2
1
CLV1L-FKB
D1
1
GREEN
D2
2
ESD9B3.3ST5G
D3, D4
3
10u
C1, C2, C5
2
1u
C3, C4
1
100n
C6
2
2K2
R1, R2
4
1K
R3, R4, R5, R7
3
10K
R6, R8, R9

ESP32-S3-SMALL design files

The KiCad project lives in the AMIFEX-IT/ESP32-S3-SMALL repository on GitHub; these links point at the commit this page was built from.

ESP32-S3-SMALL: common questions

What microcontroller does the ESP32-S3-SMALL use?

The ESP32-S3-SMALL is built around the ESP32-S3-WROOM-1-N16, from the ESP32 family.

How big is the ESP32-S3-SMALL PCB?

The ESP32-S3-SMALL measures 45 × 45 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the ESP32-S3-SMALL?

27 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESP32-S3-SMALL design files?

From the AMIFEX-IT/ESP32-S3-SMALL 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-S3-SMALL design in my own project?

Yes, under the terms of its MIT license, which AMIFEX-IT chose for the repository.

Can I test firmware for the ESP32-S3-SMALL 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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