HardLabs

Smartwatch

alexew0923·Smartwatch·KiCad/Smartwatch.kicad_pcb

Smartwatch PCB layout, top view — open source ESP32 board by alexew0923

About the Smartwatch PCB

Smartwatch is an open source ESP32 PCB design by alexew0923, published on GitHub. It is a 2-layer board measuring 60 × 60 mm, with 25 components from 13 distinct parts.

Its main chip is the XIAO-ESP32-C3-SMD, from the ESP32 family. Other key parts include the SHT4x, VEML6035, OC09600, BMP581 and CPT-9019A-SMT-TR. By type, the board carries 10 resistors, 6 ICs, 4 capacitors, 2 connectors, 2 switches and 1 battery holder.

It belongs with the wearables, displays & leds and sensors designs in this gallery.

From the project

A custom smartwatch built with 1.28 inch round TFT touchscreen display and ESP32

Smartwatch, from the project README
From the project README

Main components on the Smartwatch

XIAO-ESP32-C3-SMDSHT4xVEML6035OC09600BMP581CPT-9019A-SMT-TR

Smartwatch bill of materials (BOM)

25 components, 13 distinct parts.

QtyPartRefs
1
XIAO-ESP32-C3-SMD
U1
1
SHT4x
U2
1
VEML6035
U3
1
OC09600
U4
1
BMP581
U5
1
CPT-9019A-SMT-TR
U6
1
TFT Round Display
J1
1
DS3231
J2
1
Battery
BT1
2
SW_Push
SW1, SW2
4
100nF
C1, C2, C3, C4
6
10k
R1, R2, R7, R8, R9, R10
4
4.7k
R3, R4, R5, R6

Smartwatch design files

The KiCad project lives in the alexew0923/Smartwatch repository on GitHub; these links point at the commit this page was built from.

Smartwatch: common questions

What microcontroller does the Smartwatch use?

The Smartwatch is built around the XIAO-ESP32-C3-SMD, from the ESP32 family.

How big is the Smartwatch PCB?

The Smartwatch measures 60 × 60 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Smartwatch?

25 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the Smartwatch design files?

From the alexew0923/Smartwatch repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Smartwatch design in my own project?

The repository has no license, so all rights stay with alexew0923. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Smartwatch 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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