HardLabs

CastleBox

zeankundev·boards·CastleBox/CastleBox.kicad_pcb

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

CastleBox is an open source ESP32 PCB design by zeankundev, published on GitHub. It is a 6-layer board measuring 50 × 33 mm, with 44 components from 36 distinct parts.

Its main chip is the ESP32-S3R8, from the ESP32 family. Other key parts include the TP4057, MIC5205-3.3YM5, W25Q32JVZP, W955K8MBYA and CY7C65215-32LTXI. By type, the board carries 20 capacitors, 12 resistors, 7 ICs, 3 connectors, 1 crystal and 1 diode.

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

ESP32-S3R8TP4057MIC5205-3.3YM5W25Q32JVZPW955K8MBYACY7C65215-32LTXITXS0102YZP

CastleBox bill of materials (BOM)

44 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3R8
XC6SLX9-FTG256
U1
1
TP4057
MIC5205YM5
U2
1
MIC5205-3.3YM5
MIC5205YM5
U3
1
W25Q32JVZP
W955K8MBYA
U4
1
W955K8MBYA
U5
1
CY7C65215-32LTXI
U6
1
TXS0102YZP
U7
1
ASE-50MHz
X1
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J1
1
HDMI_C_1.4
J2
1
CONN_01X14
Conn_02x15_Odd_Even
J4
1
MBR120VLSFT1G
D1
1
10UF
470p
C1
1
1UF
470p
C2
1
1UF
2.2u
C3
1
0.1UF
2.2u
C4
1
10NF
100n
C5
4
0.1UF
100n
C6, C7, C10, C11
3
1UF
100n
C8, C15, C16
2
1.6PF
100n
C9, C12
Show 16 more
QtyPartRefs
1
470PF
100n
C13
1
2.2UF
100n
C14
1
24PF
15p
C17
1
24PF
1u
C18
2
0.1u
C19, C20
1
30
R1
1
50
R2
1
5.1K
900
R3
1
5.1K
20
R4
2
200
5.1k
R5, R6
1
200
R7
1
4.7K
200
R8
1
1.5K
10k
R9
1
10K
10k
R10
1
10K
100k
R11
1
100k
R12

CastleBox 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: common questions

What microcontroller does the CastleBox use?

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

How big is the CastleBox PCB?

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

How many components are on the CastleBox?

44 components, from 36 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 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 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 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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