HardLabs

SquirrelCore

SupperSimonMiku·SquirrelCore·SquirrelCore_PCB_Files/SquirrrelCore.kicad_pcb

SquirrelCore PCB layout, top view — open source ESP32 board by SupperSimonMiku

About the SquirrelCore PCB

SquirrelCore is an open source ESP32 PCB design by SupperSimonMiku, published on GitHub under the MIT license. It is a 4-layer board measuring 60 × 35 mm, with 92 components from 59 distinct parts.

Its main chip is the ESP32-S3FN8, from the ESP32 family. Other key parts include the BME280, PE4259, SX1262, DW01A and USBLC6-2SC6. By type, the board carries 45 capacitors, 17 resistors, 9 inductors, 8 ICs, 4 connectors and 3 crystals.

It belongs with the rf & radio, iot & wireless and sensors designs in this gallery.

From the project

Meshtastic powered mesh node using fully embedded hardware

SquirrelCore, from the project README
From the project README

Main components on the SquirrelCore

BME280PE4259SX1262DW01AUSBLC6-2SC6ESP32-S3FN8TP4056-42-ESOP8AP2112K-3.3

SquirrelCore bill of materials (BOM)

92 components, 59 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BME280
U1
1
PE4259
U2
1
SX1262
U3
1
DW01A
U4
1
USBLC6-2SC6
U6
1
ESP32-S3FN8
U7
1
TP4056-42-ESOP8
U8
1
AP2112K-3.3
U10
1
FS8205A
Q1
1
32.768 kHz
Y1
1
CRYSTAL_GND24
Crystal_GND24
Y2
1
40MHz(10ppm)
Y3
1
XH-2AW
J1
1
USB_C_RECEPTACLE_USB2.0_14P
USB_C_Receptacle_USB2.0_14P
J2
1
Conn_Coaxial
J3
1
I2C OLED
J5
1
Buzzer
BZ1
1
Flash
Flash1
1
IR26-21C_L110_TR8
D1
1
SS14
D3
Show 39 more
QtyPartRefs
1
LED_A_RGB
D7
2
8.2 nH
L1, L9
2
3.9 nH
L2, L7
1
2NH
2nH
L3
1
9.1nH
L4
1
9.1NH
9.1nH
L5
1
4.7NH
4.7nH
L6
1
15UH
15uH
L8
6
100NF
100nF
C1, C11, C28, C36, C38, C39
2
10UF
10uF
C2, C8
4
12PF
12pF
C3, C14, C49, C60
4
1UF
1uF
C4, C6, C24, C43
7
0.1UF
0.1uF
C5, C7, C18, C20, C22, C23, C27
4
10 µF
C9, C29, C42, C45
2
47PF
47pF
C15, C50
2
1nF
C21, C53
1
2.2U
39pF
C26
1
15PF
15pF
C31
1
1NF
1nF
C32
1
39PF
39pF
C33
2
3.3PF
3.3pF
C34, C35
1
470NF
470nF
C37
1
10NF
10nF
C40
1
0.1 µF
C41
2
1.2 pF
C46, C48
2
2.2 pF
C47, C52
1
100 pF
C51
2
5K1
R1, R2
1
0R
R3
1
1Ω
R4
1
1k
R5
3
3k
R6, R8, R17
1
220K
220k
R7
1
22Ω
R9
2
4.7K
4.7k
R11, R14
1
1K
R12
1
100K
100k
R13
1
1.2K
1.2k
R15
2
10K
R21, R22

SquirrelCore design files

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

SquirrelCore: common questions

What microcontroller does the SquirrelCore use?

The SquirrelCore is built around the ESP32-S3FN8, from the ESP32 family.

How big is the SquirrelCore PCB?

The SquirrelCore measures 60 × 35 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the SquirrelCore?

92 components, from 59 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 SquirrelCore design files?

From the SupperSimonMiku/SquirrelCore 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 SquirrelCore design in my own project?

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

Can I test firmware for the SquirrelCore 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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