HardLabs

CastleBox Pro

zeankundev·boards·CastleBox_Pro/CastleBox_Pro.kicad_pcb

CastleBox Pro PCB layout, top view — open source ESP32 board by zeankundev
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About the CastleBox Pro PCB

CastleBox Pro is an open source ESP32 PCB design by zeankundev, published on GitHub. It is a 6-layer board measuring 50 × 33 mm, with 73 components from 49 distinct parts.

Its main chip is the ESP32-S3R8, from the ESP32 family. Other key parts include the TP4057, MIC5205-3.3YM5, W25Q32JVZP, ATtiny406-M and FUSB302B10MPX. By type, the board carries 33 capacitors, 18 resistors, 9 ICs, 8 diodes, 3 connectors and 1 crystal.

It belongs with the power & battery and iot & wireless designs in this gallery.

From the project

A collection and an archive of KiCad projects I made. Contains projects from 2023 - 2024.

- Pico2040 and Pico2350 series. These are my self-designed boards oriented mostly around ARM microcontrollers. especially the RP2040 and the RP2350 - LiPower, BreadPower and LCDRucksack. Those are two board categories that I like to classify them as being "useless". LiPower being the overengineered version of the TP4056 charger, BreadPower being the most generic breadboard power supply. Of course, this was designed before I even know USB-C PD. LCDRucksack is just literally a clone of the LCD backpacks out there, but with castellated holes. - ProyekOPSI2023 was the board I designed for the…

Main components on the CastleBox Pro

ESP32-S3R8TP4057MIC5205-3.3YM5W25Q32JVZPATtiny406-MFUSB302B10MPXAZ1117-5.0MIC5205YM5

CastleBox Pro bill of materials (BOM)

73 components, 49 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3R8
CY7C65215-32LTXI
U1
1
TP4057
XC6SLX9-FTG256
U2
1
MIC5205-3.3YM5
W955K8MBYA
U3
1
W25Q32JVZP
W955K8MBYA
U4
1
ATtiny406-M
U5
1
FUSB302B10MPX
U6
1
AZ1117-5.0
U7
2
MIC5205YM5
U8, U9
1
ASE-50MHz
X1
1
USB_C_RECEPTACLE_USB2.0_16P
HDMI_C_1.4
J1
1
USB_C_Receptacle_USB2.0_16P
J2
1
CONN_01X14
Conn_02x15_Odd_Even
J3
1
VSEL
SW1
1
ESDA5V3L
D1
5
EMERALD
D2, D3, D5, D6, D7
1
MBR120VLSFT1G
EMERALD
D4
1
MBR120VLSFT1G
D8
1
10UF
1u
C1
1
1UF
2.2u
C2
1
1UF
470p
C3
Show 29 more
QtyPartRefs
1
0.1UF
2.2u
C4
1
10NF
470p
C5
2
0.1UF
0.1u
C6, C7
1
1UF
15p
C8
1
1.6PF
100u
C9
2
0.1UF
4.7u
C10, C11
1
1.6PF
4.7u
C12
1
470PF
0.47u
C13
1
2.2UF
100u
C14
1
1UF
4.7u
C15
1
1UF
0.47u
C16
1
24PF
0.47u
C17
1
24PF
100u
C18
4
4.7u
C19, C22, C26, C29
6
0.47u
C20, C23, C24, C25, C30, C31
3
100u
C21, C27, C28
2
100n
C32, C33
2
10k
R1, R2
2
5.1K
100k
R3, R4
2
200
R5, R6
2
330
R7, R12
1
4.7K
330
R8
1
1.5K
330
R9
2
10K
330
R10, R11
1
50
R13
1
30
R14
1
20
R15
1
900
R16
2
1k
R17, R18

CastleBox Pro design files

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

CastleBox Pro: common questions

What microcontroller does the CastleBox Pro use?

The CastleBox Pro is built around the ESP32-S3R8, from the ESP32 family.

How big is the CastleBox Pro PCB?

The CastleBox Pro measures 50 × 33 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the CastleBox Pro?

73 components, from 49 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 CastleBox Pro design files?

From the zeankundev/boards 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 CastleBox Pro design in my own project?

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

Can I test firmware for the CastleBox Pro 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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