ZSWatch: An Open-Source Smartwatch Project Based on the Zephyr Operating System

By Boris Landoni on October 30, 2023

Jakob Krantz has created an open-source smartwatch called ZSWatch, which utilizes the Zephyr Real-Time Operating System (RTOS).

The four-layer PCB measures 36mm and contains a u-blox ANNA-B402 module with a Nordic nRF52833 BLE SoC, a sensor package with an accelerometer, a pulse oximeter, and a heart rate monitor, a vibrating motor, a battery management circuit, an 8-megabyte flash memory, and three navigation buttons.

The battery is a 220mAh LiPo battery, and the display is a circular 1.28-inch IPS TFT screen protected by sapphire glass.

About Boris Landoni

Boris Landoni is the technical manager of Open-Electronics.org. Skilled in the GSM field, embraces the Open Source philosophy and its projects are available to the community.

OpenSource Products

Clap sensor switch – in DIY Kit
It is capable of recognizing the sound of clapping hands...
- Posted 2 months ago
- 1
Liquid level indicator for tanks – in DIY kit
This monitoring device is useful for keeping track of the...
- Posted 2 months ago
- 0
LED candle with Breath-Activated ON/OFF – in DIY Kit
This LED candle with breath-activated ON/OFF function draws inspiration from...
- Posted 2 months ago
- 0
Low charge audible warning for 12V batteries – in DIY Kit
This low-charge warning buzzer alerts you when your vehicle’s battery...
- Posted 2 months ago
- 0
Automation for motorized blinds and shutters – in DIY Kit
Complete Kit for Motorized Outdoor Blinds and Shutters Automation. This...
- Posted 2 months ago
- 1
Alcohol tester with LED indication and audible buzzer – in DIY Kit
With its high sensitivity and rapid response times, this kit-based...
- Posted 2 months ago
- 0
LED candle with Breath-Activated ON/OFF – DIY Kit
This LED candle with breath-activated ON/OFF function draws inspiration from...
- Posted 2 months ago
- 0
Low Charge Audible Warning for 12V Batteries – in kit
This low-charge warning buzzer alerts you when your vehicle’s battery...
- Posted 2 months ago
- 0

Tutorials

PCB CAD, A SELECTION GUIDE
Getting to know and evaluate the software offer for PCB,...
- Posted 2 years ago
- 0
DIY Sensor – Innovation & Implementation
A sensor converts data such as heat, light, sound,...
- Posted 3 years ago
- 0
Getting Started with the ESP32
This article is a getting started guide for the ESP32...
- Posted 4 years ago
- 0

Mods and Hacks

The flame that doesn’t burn
Based on Neopixel and a special ultra-thin Arduino, it simulates...
- Posted 2 years ago
- 1
Here are the Winners from the 3Drag 3d printing contest
Here we are, eventually the contest has come to an...
- Posted 9 years ago
- 0
Updates from the 3Drag 3dprinting contest: Roland Hoffert’s Hacks
Roland Hoffert, from www.eytec.de, submitted us this 3Drag (Velleman K8200...
- Posted 9 years ago
- 0
Updates from the 3Drag 3dprinting contest: Karl Seiss’s Hack
Karl Seiss from Austria made a very clever hack to...
- Posted 9 years ago
- 0

Opinions

PCB Recycling: The Core of Your Electronics Is More Valuable Than You Think
The screen you are looking at this very moment will...
- Posted 2 years ago
- 4
PCB CAD, A SELECTION GUIDE
Getting to know and evaluate the software offer for PCB,...
- Posted 2 years ago
- 0
The Open Source community united against Covid-19
On March 11, WHO (World Health Organization) officially declared the...
- Posted 4 years ago
- 0
Coronavirus: Now Is The Time For Solidarity
The moment we are living, in China before and all...
- Posted 4 years ago
- 0

Popular
Latest
Comments

Arduino ISP (In System Programming) and stand-alone circuits
We use an Arduino to program other ATmega without...
- Posted 12 years ago
- 226
Arduino GSM shield
This is a very low...
- Posted 13 years ago
- 218
Localizer with SIM908 module
The device is based on a GSM/GPRS module with...
- Posted 11 years ago
- 187
GSM GPS shield for Arduino
Shield for Arduino designed and based on the module...
- Posted 11 years ago
- 181
Small Breakout for SIM900 GSM Module
Some post ago we presented a PCB to mount...
- Posted 13 years ago
- 115

Segstick: Build Your Own Self-Balancing Vehicle in Just 2 Days with Arduino
The Segstick project is a do-it-yourself construction of a...
- Posted 1 week ago
- 0
ZSWatch: An Open-Source Smartwatch Project Based on the Zephyr Operating System
Jakob Krantz has created an open-source smartwatch called ZSWatch,...
- Posted 1 month ago
- 0
What is IoT and which devices to use
In this video, IoT (Internet of Things) is introduced,...
- Posted 1 month ago
- 1
Unveiling the Tech Horizon: Highlights from Maker Faire Rome 2023
A leap into the future to discover how our...
- Posted 1 month ago
- 0
Maker Faire Rome Unveils Thrilling “Padel Smash Future” Pavilion for Sports Enthusiasts
The major highlight of the 2023 edition will be...
- Posted 2 months ago
- 0