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Friendship-Signal-Bracelets

Sealflux·Friendship-Signal-Bracelets·PCB/FriendshipBracelet.kicad_pcb

Friendship-Signal-Bracelets PCB layout, top view — open source ESP32 board by Sealflux

About the Friendship-Signal-Bracelets PCB

Friendship-Signal-Bracelets is an open source ESP32 PCB design by Sealflux, published on GitHub under the MIT license. It is a 2-layer board measuring 63 × 53.5 mm, with 22 components from 15 distinct parts.

Its main chip is the XIAO-ESP32-C3-SMD, from the ESP32 family. Other key parts include the HS96L03W2C03, ICS-43434, ISM303DACTR, SPX3819M5-L-1-8/TR and LSF0108PWR. By type, the board carries 6 ICs, 6 LEDs, 6 capacitors, 1 battery holder, 1 switch and 1 resistor.

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

From the project

Friendship Signal Bracelets, which as the name suggests, light up when a bestie is nearby :)

Friendship-Signal-Bracelets, from the project README
From the project README

Main components on the Friendship-Signal-Bracelets

XIAO-ESP32-C3-SMDHS96L03W2C03ICS-43434ISM303DACTRSPX3819M5-L-1-8/TRLSF0108PWR

Friendship-Signal-Bracelets bill of materials (BOM)

22 components, 15 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-ESP32-C3-SMD
U1
1
HS96L03W2C03
HS(汉昇)
U2
1
ICS-43434
ICS-43434_C5656610
TDK InvenSense(应美盛)
U3
1
ISM303DACTR
ST(意法半导体)
U4
1
SPX3819M5-L-1-8/TR
SPX3819M5-L-1-8
MaxLinear(迈凌)
U5
1
LSF0108PWR
TI(德州仪器)
U6
1
Battery_Cell
BT1
1
1207-P6.5MM
XHXDZ(兴华鑫)
BUZZER1
1
SW_Push
SW1
6
WS2812B-V6
worldsemi
LED1, LED2, LED3, LED4, LED5, LED6
3
CC0402KRX7R7BB104
100nF
YAGEO(国巨)
C1, C2, C3
1
CL10B224KB8NNNC
220nF
SAMSUNG(三星)
C4
1
ECR1HBK100MLL050011
10uF
Jianghai(南通江海)
C5
1
CC0603KRX7R9BB103
10nF
YAGEO(国巨)
C6
1
RC0402FR-07100KL
100kΩ
YAGEO(国巨)
R1

Friendship-Signal-Bracelets design files

The KiCad project lives in the Sealflux/Friendship-Signal-Bracelets repository on GitHub; these links point at the commit this page was built from.

Friendship-Signal-Bracelets: common questions

What microcontroller does the Friendship-Signal-Bracelets use?

The Friendship-Signal-Bracelets is built around the XIAO-ESP32-C3-SMD, from the ESP32 family.

How big is the Friendship-Signal-Bracelets PCB?

The Friendship-Signal-Bracelets measures 63 × 53.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Friendship-Signal-Bracelets?

22 components, from 15 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 Friendship-Signal-Bracelets design files?

From the Sealflux/Friendship-Signal-Bracelets 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 Friendship-Signal-Bracelets design in my own project?

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

Can I test firmware for the Friendship-Signal-Bracelets 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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