Smartwatch
About the Smartwatch PCB
Smartwatch is an open source PCB design by JitDey2004, 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 rf & radio and wearables designs in this gallery.
From the project
this is a open source smartwatch pcb
This repository contains a modified derivative of the Open-Smartwatch GPS hardware project. The derivative work and local modifications are owned and maintained by Jit Dey.
The original hardware design, library references, and upstream project history remain credited to the Open-Smartwatch project. This folder keeps those references where they are required for attribution, license compliance, and KiCad compatibility.
Main components on the Smartwatch
Smartwatch bill of materials (BOM)
67 components, 34 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DS3231MZ | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | BMA400 Bosch Sensortec | LGA-12_2x2mm_P0.5mm | U2 |
| 1 | PSRAM64H | SOP-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | GC9A01_IPS_display | GC9A01_IPS_display | U4 |
| 1 | USB-OTG | USBmicro-B | U5 |
| 1 | CH340E | MSOP-10_3x3mm_P0.5mm | U6 |
| 1 | ttgo-32-micro | ttgo-32-micro | U7 |
| 1 | Quectel_L96 | Quectel_L96 | U8 |
| 1 | TPS2115APWR TPS2115A Texas Instruments | TSSOP-8_4.4x3mm_P0.65mm | U9 |
| 2 | XC6209 | SOT-23-5 | U10, U13 |
| 1 | MCP73831T-2ACI/OT MCP73831T-2ACI_OT Microchip Technology | SOT-23-5 | U11 |
| 1 | 2N7002 | SOT-23 | Q1 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J1 |
| 4 | SW_Push | button_side_smd | SW1, SW2, SW4, SW5 |
| 1 | SD_ebay-uSD-push_push_SMD | Conn_uSDcard | XS1 |
| 1 | LED_Green | LED_0805_2012Metric | D1 |
| 2 | 4.7uF | C_0603_1608Metric | C1, C2 |
| 14 | 0.1u | C_0603_1608Metric | C3, C4, C7, C8, C9, C10, C11, C12 +6 |
| 2 | 100u | C_1206_3216Metric | C5, C6 |
| 2 | 4.7u | C_0603_1608Metric | C16, C17 |
Show 14 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100p | C_0603_1608Metric | C20 |
| 1 | 10p | C_0603_1608Metric | C21 |
| 1 | 22 | R_0603_1608Metric | R1 |
| 6 | 1k | R_0603_1608Metric | R2, R3, R6, R7, R24, R25 |
| 2 | 470R | R_0603_1608Metric | R4, R13 |
| 1 | 0R | R_0402_1005Metric | R5 |
| 7 | 10k | R_0603_1608Metric | R8, R9, R10, R11, R17, R20, R21 |
| 1 | 5.6k | R_0603_1608Metric | R12 |
| 1 | 510R | R_0603_1608Metric | R14 |
| 1 | 5k | R_0603_1608Metric | R15 |
| 2 | 200k | R_0603_1608Metric | R16, R19 |
| 1 | 2.2K | R_0603_1608Metric | R18 |
| 1 | 1M | R_0603_1608Metric | R22 |
| 1 | 56k | R_0603_1608Metric | R23 |
Smartwatch design files
The KiCad project lives in the JitDey2004/smartwatch repository on GitHub; these links point at the commit this page was built from.
- Layoutosw.kicad_pcb
- Schematicosw.kicad_sch
- BOMgerbers/osw-bom_v.csv
Smartwatch: common questions
How big is the Smartwatch PCB?
The Smartwatch measures 45 × 41 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Smartwatch?
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 Smartwatch design files?
From the JitDey2004/smartwatch 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 Smartwatch design in my own project?
Yes, under the terms of its GPL-3.0 license, which JitDey2004 chose for the repository.
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