HardLabs

Atlas-S3-DevBoard

OmkarKnkr·Atlas-S3-DevBoard·Hardware/KiCad/DevBoard.kicad_pcb

Atlas-S3-DevBoard PCB layout, top view — open source ESP32 board by OmkarKnkr

About the Atlas-S3-DevBoard PCB

Atlas-S3-DevBoard is an open source ESP32 PCB design by OmkarKnkr, published on GitHub. It is a 4-layer board measuring 27.4 × 65.2 mm, with 47 components from 26 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the LD1117S33TR_SOT223, CP2102N-Axx-xQFN28, USBLC6-2SC6 and BMI088. By type, the board carries 15 resistors, 13 capacitors, 6 ICs, 5 connectors, 4 diodes and 2 transistors.

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

From the project

Atlas S3 DevBoard is a custom ESP32-S3 development board designed from the ground up with an emphasis on compactness, usability, and clean PCB design practices. The board integrates essential development features while maintaining a layout suitable for embedded applications and future expansion.

Atlas S3 DevBoard is a custom ESP32-S3 development board designed from the ground up with an emphasis on compactness, usability, and clean PCB design practices. The board integrates essential development features while maintaining a layout suitable for embedded applications and future expansion.

This project was created to demonstrate the complete embedded hardware design workflow—from schematic capture and PCB layout to documentation and hardware validation.

Atlas-S3-DevBoard, from the project README
From the project README

Main components on the Atlas-S3-DevBoard

ESP32-S3-WROOM-1LD1117S33TR_SOT223CP2102N-Axx-xQFN28USBLC6-2SC6BMI088

Atlas-S3-DevBoard bill of materials (BOM)

47 components, 26 distinct parts.

QtyPartRefs
1
ESP32-S3-WROOM-1
U1
1
LD1117S33TR_SOT223
U2
1
CP2102N-Axx-xQFN28
U3
2
USBLC6-2SC6
U4, U5
1
BMI088
U6
2
SS8050
Q1, Q2
2
USB_C_Receptacle_USB2.0_16P
J1, J2
1
Right
J3
1
Left
J4
1
I2C
J5
1
BOOT
SW1
1
RESET
SW2
2
1N5819
D1, D2
1
Power
D3
1
SK6812MINI
D4
6
10u
C1, C2, C3, C5, C7, C9
5
100n
C4, C6, C10, C11, C12
2
1u
C8, C13
5
5k1
R1, R2, R3, R4, R5
1
22k1
R6
Show 6 more
QtyPartRefs
1
47k5
R7
1
1k
R8
3
10k
R10, R11, R14
1
0
R12
1
0
R13
2
4k7
R15, R16

Atlas-S3-DevBoard design files

The KiCad project lives in the OmkarKnkr/Atlas-S3-DevBoard repository on GitHub; these links point at the commit this page was built from.

Atlas-S3-DevBoard: common questions

What microcontroller does the Atlas-S3-DevBoard use?

The Atlas-S3-DevBoard is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Atlas-S3-DevBoard PCB?

The Atlas-S3-DevBoard measures 27.4 × 65.2 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Atlas-S3-DevBoard?

47 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the Atlas-S3-DevBoard design files?

From the OmkarKnkr/Atlas-S3-DevBoard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Atlas-S3-DevBoard design in my own project?

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

Can I test firmware for the Atlas-S3-DevBoard 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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