HardLabs

LBEAST Child Shield

scifiuiguy·LBEAST_Unity·Packages/com.ajcampbell.lbeast/FirmwareExamples/PCBs/LBEAST_Child_Shield/LBEAST_Child_Shield.kicad_pcb

LBEAST Child Shield layout, top view — open source ESP32 board by scifiuiguy

About the LBEAST Child Shield

LBEAST Child Shield is an open source ESP32 PCB design by scifiuiguy, published on GitHub. It is a 2-layer board measuring 86.1 × 36.7 mm, with 26 components from 16 distinct parts.

Its main chip is the ESP32-S3-2x22, from the ESP32 family. Other key parts include the LAN8720A. By type, the board carries 8 capacitors, 6 resistors, 4 connectors, 4 diodes, 2 ICs and 1 crystal.

It belongs with the dev boards & breakouts, iot & wireless and power & battery designs in this gallery.

From the project

Location-Based Entertainment Activation Standard Toolkit - designed to streamline deployment of professional-grade multiplayer VR LBE in venues using immersive theater actors, standardized large hydraulics for motion and haptics, embedded systems for button input & small haptic feedback with vibrators and kickers, & pro AV OSC for light and sound.

The Child Shield is a simplified derivative of the Universal Shield (LBUS). It keeps the same ESP32-S3 parent ECU pin map and Ethernet PHY but reduces the aux bus to one RJ45 port and drops CAN entirely. The goal is to provide a tiny, inexpensive parent/child hybrid board for installations that only need a single downstream device or a dedicated “mini LBUS” inside a prop or remote enclosure.

LBEAST Child Shield, from the project README
From the project README

Main components on the LBEAST Child Shield

ESP32-S3-2x22LAN8720A

LBEAST Child Shield bill of materials (BOM)

26 components, 16 distinct parts.

QtyPartRefs
1
ESP32-S3-2x22
U2
1
LAN8720A
U3
1
25MHz
Y1
1
MTJ-883X1
J1
2
Conn_01x22_Pin
J2, J3
1
UART_Debug_Header
J12
1
J1_PWR_SW
SW2
1
MBR735
D1
3
LED
D10, D11, D12
1
10µF
C6
5
100nF
C7, C8, C9, C10, C11
2
10pF
C12, C13
3
270R
R4, R5, R6
1
49R9
R7
1
10k
R8
1
4.7k
R9

LBEAST Child Shield design files

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

LBEAST Child Shield: common questions

What microcontroller does the LBEAST Child Shield use?

The LBEAST Child Shield is built around the ESP32-S3-2x22, from the ESP32 family.

How big is the LBEAST Child Shield?

The LBEAST Child Shield measures 86.1 × 36.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LBEAST Child Shield?

26 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the LBEAST Child Shield design files?

From the scifiuiguy/LBEAST_Unity repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the LBEAST Child Shield design in my own project?

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

Can I test firmware for the LBEAST Child Shield 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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