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ESP32-S3-MINI-1 UU

uutzinger·ESP32_PCB·ESP32_S3_MINI_1/ESP32-S3-MINI-1_UU.kicad_pcb

ESP32-S3-MINI-1 UU PCB layout, top view — open source ESP32 board by uutzinger

About the ESP32-S3-MINI-1 UU PCB

ESP32-S3-MINI-1 UU is an open source ESP32 PCB design by uutzinger, published on GitHub. It is a 2-layer board measuring 20.3 × 45.7 mm, with 53 components from 35 distinct parts.

Its main chip is the TPS6282533DMQR, from the ESP32 family. Other key parts include the BQ25185DLHR, LM66100DCK, ESP32-S3-MINI-1-N8, MAX17048 and TMP102AIDRLR. By type, the board carries 14 capacitors, 14 resistors, 8 diodes, 7 ICs, 7 connectors and 2 switches.

It belongs with the sensors and power & battery 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-1 UU, from the project README
From the project README

Main components on the ESP32-S3-MINI-1 UU

TPS6282533DMQRBQ25185DLHRLM66100DCKESP32-S3-MINI-1-N8MAX17048TMP102AIDRLR

ESP32-S3-MINI-1 UU bill of materials (BOM)

53 components, 35 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TPS6282533DMQR
TI
IC1
1
BQ25185DLHR
TI
IC2
2
LM66100DCK
Texas Instruments
U1, U5
1
ESP32-S3-MINI-1-N8
ESP32-S3-MINI-1
Espressif
U2
1
MAX17048
Maxim
U3
1
TMP102AIDRLR
TMP112A
Texas Instruments
U4
1
306-S2BPHSM4TBLFSN
JST_2mm_LiPo
JST
J1
1
USB4120-03-C
GCT
J2
1
1.0T-4PLTPZ
Qwiic_Vertical
BOOMELE
J3
2
CASTELLATED_1X01
Castellated_1x01
D.N.P.
J4, J7
1
CASTELLATED_1X16
Castellated_1x16
D.N.P.
J8
1
CASTELLATED_1X18
Castellated_1x18
D.N.P.
J9
2
NANOT160AS
C&K
S1, S2
1
ESD9B5.0ST5G
onSemi
D1
1
VLMG1500-GS08
LED GRN
Vishay
D2
1
VLMS1500-GS08
LED RED
Vishay
D3
2
VLMB1500-GS08
LED
Vishay
D4, D5
1
WS2812B-2020
WS2812B
Worldsemi
D6
2
ESD9101P2T5G
Onsemi
D7, D8
1
TFM160808ALC-R47MTAA
TDK
L1
Show 15 more
QtyPartRefs
4
GRM155R61A106ME44D
10uF
muRata
C1, C2, C5, C6
1
GRM158R61A226ME15D
22uF
muRata
C3
4
GRM155R71A104KA01D
0u1F
muRata
C4, C10, C11, C12
1
GCM155C71A105KE38D
1uF
muRata
C7
1
GCM155C71A105KE38D
1.0uF
muRata
C8
1
GRM155R61A475KEAAD
4u7F
muRata
C9
1
CC0402KRX7R6BB103
10nF
YAGEO
C14
1
GRM155R71A104KA01D
0.1uF
muRata
C15
2
RC0402FR-07100KL
100k
YAGEO
R1, R8
1
RC0402FR-0718KL
18k
YAGEO
R2
1
RC0402FR-07300RL
300
YAGEO
R3
2
RC0402FR-075K1L
5k1
YAGEO
R4, R5
4
RC0402FR-072K2L
2k2
YAGEO
R9, R10, R11, R12
2
RC0402FR-0710KL
10k
YAGEO
R13, R17
2
RC0402FR-074K7L
4k7
YAGEO
R14, R16

ESP32-S3-MINI-1 UU 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-1 UU: common questions

What microcontroller does the ESP32-S3-MINI-1 UU use?

The ESP32-S3-MINI-1 UU is built around the TPS6282533DMQR, from the ESP32 family.

How big is the ESP32-S3-MINI-1 UU PCB?

The ESP32-S3-MINI-1 UU measures 20.3 × 45.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP32-S3-MINI-1 UU?

53 components, from 35 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-1 UU 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-1 UU 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-1 UU 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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