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ESP32-S3-Mini-1U

uutzinger·ESP32_PCB·ESP32_S3_MINI_1U/ESP32-S3-MINI-1U_UU.kicad_pcb

ESP32-S3-Mini-1U PCB layout, top view — open source ESP32 board by uutzinger

About the ESP32-S3-Mini-1U PCB

ESP32-S3-Mini-1U is an open source ESP32 PCB design by uutzinger, published on GitHub. It is a 2-layer board measuring 20.3 × 38.1 mm, with 38 components from 25 distinct parts.

Its main chip is the TPS6282533DMQR, from the ESP32 family. Other key parts include the ESP32-S3-MINI-1U-N8, LM66100DCK and TMP112AIDRLR. By type, the board carries 10 capacitors, 9 resistors, 6 diodes, 5 ICs, 5 connectors and 2 switches.

It belongs with the sensors designs in this gallery.

From the project

Designed with KiCad by Urs Utzinger, February - June 2026.

Designed with KiCad by Urs Utzinger, February - June 2026.

- Full size battery operated ESP32-S3-Mini - Minimial size ESP32-S3. - Minimal size ESP32-C6, low power.

Based on S3/C6-mini modules. PCBs are dual layer.

ESP32-S3-Mini-1U, from the project README
From the project README

Main components on the ESP32-S3-Mini-1U

TPS6282533DMQRESP32-S3-MINI-1U-N8LM66100DCKTMP112AIDRLR

ESP32-S3-Mini-1U bill of materials (BOM)

38 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TPS6282533DMQR
Texas Instruments
IC1
1
ESP32-S3-MINI-1U-N8
ESP32-S3-MINI-1U
Espressif Systems
U1
2
LM66100DCK
Texas Instruments
U2, U3
1
TMP112AIDRLR
TMP112xxDRL
Texas Instruments
U4
1
USB4120-03-C
GCT
J2
1
1.0T-4PLTPZ
Qwiic_Vertical
BOOMELE
J3
1
CASTELLATED_1X01
Castellated_1x01
Do No Populate
J4
1
CASTELLATED_1X13
Castellated_1x13
Do No Populate
J5
1
CASTELLATED_1X15
Castellated_1x15
Do No Populate
J6
2
NANOT160AS
C&K
S1, S2
1
ESD9101P2T5G
ESD9B5.0ST5G
onSemi
D1
2
VLMB1500-GS08
LED
Vishay
D4, D5
1
WS2812B-2020
WS2812B
Worldsemi
D6
2
ESD9101P2T5G
onSemi
D7, D8
1
TFM160808ALC-R47MTAA
TDK
L1
3
GRM155R61A106ME44D
10uF
muRata
C1, C2, C5
1
GRM158R61A226ME15D
22uF
muRata
C3
4
GRM155R71A104KA01D
0u1F
muRata
C4, C10, C11, C12
1
GRM155R61A475KEAAD
4u7F
muRata
C9
1
CC0402KRX7R6BB103
10nF
YAGEO
C14
Show 5 more
QtyPartRefs
1
RC0402FR-07100KL
100k
YAGEO
R1
2
RC0402FR-075K1L
5k1
YAGEO
R4, R5
2
RC0402FR-072K2L
2k2
YAGEO
R11, R12
2
RC0402FR-0710KL
10k
YAGEO
R13, R17
2
RC0402FR-074K7L
4k7
YAGEO
R14, R16

ESP32-S3-Mini-1U design files

The KiCad project lives in the uutzinger/ESP32_PCB repository on GitHub; these links point at the commit this page was built from.

ESP32-S3-Mini-1U: common questions

What microcontroller does the ESP32-S3-Mini-1U use?

The ESP32-S3-Mini-1U is built around the TPS6282533DMQR, from the ESP32 family.

How big is the ESP32-S3-Mini-1U PCB?

The ESP32-S3-Mini-1U measures 20.3 × 38.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP32-S3-Mini-1U?

38 components, from 25 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-S3-Mini-1U design files?

From the uutzinger/ESP32_PCB 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-S3-Mini-1U design in my own project?

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

Can I test firmware for the ESP32-S3-Mini-1U 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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