HardLabs

Stm32 watch

ramonimbao·stm32_watch·hardware/board/Watch.kicad_pcb

Stm32 watch PCB layout, top view — open source STM32 board by ramonimbao

About the Stm32 watch PCB

Stm32 watch is an open source STM32 PCB design by ramonimbao, published on GitHub under the MIT license. It is a 2-layer board measuring 28.6 × 39 mm, with 32 components from 15 distinct parts.

Its main chip is the STM32L031K6, from the STM32 family. Other key parts include the HOLDER_COIN_CELL_2032. By type, the board carries 14 capacitors, 5 resistors, 2 ICs, 2 connectors, 1 crystal and 1 diode.

It belongs with the wearables designs in this gallery.

From the project

A DIY STM32-based Watch

This repository contains the necessary files for building your own STM32-based watch.

Details assembly instructions for the project are located in BUILDING.md.

This project is licensed under the MIT license - see the LICENSE.md for more details.

Stm32 watch, from the project README
From the project README

Main components on the Stm32 watch

STM32L031K6HOLDER_COIN_CELL_2032

Stm32 watch bill of materials (BOM)

32 components, 15 distinct parts.

QtyPartRefs
1
STM32L031K6
U1
1
HOLDER_COIN_CELL_2032
U2
1
32.768kHz
X1
1
LCD FPC Connector
P1
1
CONN_01X07
P2
3
SKRTLAE010
PB1, PB2, PB3
3
0
SB1, SB2, SB3
1
LED
D1
1
1000
L1
8
100n
C1, C5, C6, C7, C8, C12, C13, C14
3
1u
C2, C3, C9
1
4u7
C4
2
10p
C10, C11
4
10k
R1, R2, R3, R4
1
510
R6

Stm32 watch design files

The KiCad project lives in the ramonimbao/stm32_watch repository on GitHub; these links point at the commit this page was built from.

Stm32 watch: common questions

What microcontroller does the Stm32 watch use?

The Stm32 watch is built around the STM32L031K6, from the STM32 family.

How big is the Stm32 watch PCB?

The Stm32 watch measures 28.6 × 39 mm, has 2 copper layers and is 0.8 mm thick.

How many components are on the Stm32 watch?

32 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the Stm32 watch design files?

From the ramonimbao/stm32_watch repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Stm32 watch design in my own project?

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

Can I test firmware for the Stm32 watch without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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