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Open smartwatch gps

Open-Smartwatch·open-smartwatch-gps

Open smartwatch gps PCB layout, top view — open source board by Open-Smartwatch
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About the Open smartwatch gps PCB

Open smartwatch gps is an open source PCB design by Open-Smartwatch, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 45 × 41 mm, with 67 components from 34 distinct parts.

Other key parts include the DS3231MZ, BMA400, PSRAM64H, GC9A01_IPS_display and USB-OTG. By type, the board carries 25 resistors, 22 capacitors, 12 ICs, 4 switches, 1 transistor and 1 connector.

It belongs with the wearables and rf & radio designs in this gallery.

From the project

Hardware design files for the GPS version of the open-smartwatch

Repo for kicad schematic, board and gerber files. This project is in development and is not ready for release.

Update 2025-06: There never was a release since the selected GPS module does not work on a wearable-sized PCB, and while worn at the same time.

To view/modify the files from this repository, install KiCAD from: https://kicad.org

Also, add the following Symbol/Footprint library to KiCAD: https://github.com/Open-Smartwatch/Kicad-Libraries

Main components on the Open smartwatch gps

DS3231MZBMA400PSRAM64HGC9A01_IPS_displayUSB-OTGCH340Ettgo-32-microQuectel_L96TPS2115AXC6209MCP73831T-2ACI_OT

Open smartwatch gps bill of materials (BOM)

67 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
DS3231MZ
U1
1
BMA400
U2
1
PSRAM64H
U3
1
GC9A01_IPS_display
U4
1
USB-OTG
U5
1
CH340E
U6
1
ttgo-32-micro
U7
1
Quectel_L96
U8
1
TPS2115A
U9
2
XC6209
U10, U13
1
MCP73831T-2ACI_OT
U11
1
2N7002
Q1
1
Conn_01x02
J1
4
SW_Push
SW1, SW2, SW4, SW5
1
SD_ebay-uSD-push_push_SMD
XS1
1
LED_Green
D1
2
4.7uF
C1, C2
14
0.1u
C3, C4, C7, C8, C9, C10, C11, C12 +6
2
100u
C5, C6
2
4.7u
C16, C17
Show 14 more
QtyPartRefs
1
100p
C20
1
10p
C21
1
22
R1
6
1k
R2, R3, R6, R7, R24, R25
2
470R
R4, R13
1
0R
R5
7
10k
R8, R9, R10, R11, R17, R20, R21
1
5.6k
R12
1
510R
R14
1
5k
R15
2
200k
R16, R19
1
2.2K
R18
1
1M
R22
1
56k
R23

Open smartwatch gps design files

The KiCad project lives in the Open-Smartwatch/open-smartwatch-gps repository on GitHub; these links point at the commit this page was built from.

Open smartwatch gps: common questions

How big is the Open smartwatch gps PCB?

The Open smartwatch gps measures 45 × 41 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Open smartwatch gps?

67 components, from 34 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 Open smartwatch gps design files?

From the Open-Smartwatch/open-smartwatch-gps repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Open smartwatch gps design in my own project?

Yes, under the terms of its GPL-3.0 license, which Open-Smartwatch chose for the repository.

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