HardLabs

ESP32

buttonbugs·Stuffed-Crust·ESP32_PCB/ESP32_PCB.kicad_pcb

ESP32 PCB layout, top view — open source ESP32 board by buttonbugs

About the ESP32 PCB

ESP32 is an open source ESP32 PCB design by buttonbugs, published on GitHub under the MIT license. It is a 2-layer board measuring 35 × 35 mm, with 39 components from 28 distinct parts.

Its main chip is the ESP32-S3-MINI-1U, from the ESP32 family. Other key parts include the H3LIS331DL, AP2112K-3.3 and TPS54302. By type, the board carries 12 capacitors, 12 resistors, 5 connectors, 5 diodes, 4 ICs and 1 inductor.

It belongs with the robotics & motion designs in this gallery.

From the project

This repository contains the code for Wildcat Robotics' team Stuffed Crust. This is a fork of the open source melty brain code, openmelt, with our custom motor control and translational drift algorithm and changes specific to Stuffed Crust's design.

This repository contains the code for Wildcat Robotics' team Stuffed Crust. This is a fork of the open source melty brain code, openmelt [^1], with improved translational drift algorithm, adapted watchdog [^2] for Teensy 4.0 and some other changes specific to Stuffed Crust's design.

https://github.com/user-attachments/assets/2b465f3a-5d59-4c2d-9435-344acd4d646b

Main components on the ESP32

H3LIS331DLAP2112K-3.3TPS54302ESP32-S3-MINI-1U

ESP32 bill of materials (BOM)

39 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
H3LIS331DL
U2
1
AP2112K-3.3
U3
1
TPS54302
U4
1
ESP32-S3-MINI-1U
U5
1
USB_C_Receptacle
J1
1
ESC 1
J2
1
ESC 2
J3
1
EN & Boot
J4
1
LED_Strip
J5
1
BAT54CW
D1
2
SMAJ36A
D2, D3
1
Status_LED
D4
1
Power_LED
D5
1
10UH
10uH
L1
3
1UF
1uF
C1, C2, C4
1
6.8UF
6.8uF
C3
1
10UF
10uF
C5
3
100NF
100nF
C6, C8, C13
1
10PF
10pF
C7
1
82PF
82pF
C9
Show 8 more
QtyPartRefs
1
47UF
47uF
C10
1
22UF
22uF
C11
2
5.1K
R1, R2
2
4.7K
4.7k
R3, R4
4
10K
10k
R5, R6, R9, R12
1
100K
100k
R7
1
13.7
R8
2
100Ω
R10, R11

ESP32 design files

The KiCad project lives in the buttonbugs/Stuffed-Crust repository on GitHub; these links point at the commit this page was built from.

ESP32: common questions

What microcontroller does the ESP32 use?

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

How big is the ESP32 PCB?

The ESP32 measures 35 × 35 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP32?

39 components, from 28 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 design files?

From the buttonbugs/Stuffed-Crust 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 design in my own project?

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

Can I test firmware for the ESP32 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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