AsteroidOS 2.0, a Linux-based open-source smartwatch operating system, has been released with features like always-on display, heart rate monitoring, and support for approximately 30 devices. It aims to provide a privacy-focused and environmentally responsible alternative for smartwatches.
Core Devices is introducing two new watches that closely follow the original Pebble DNA, the Pebble 2 Duo and Pebble Time 2. These smartwatches feature long battery life, e-paper screens, and run open-source PebbleOS.
The long-awaited Pebble Time 2 is relaunching as the Core Time 2, featuring a 1.5-inch color e-paper display, metal frame, heart rate monitor, and a significant upgrade with a touchscreen. It will be available for pre-order at $229 with a 30-day battery life and is set to ship in December 2025.
Glowtape is a unique DIY wristwatch by Henner Zeller that uses glow-in-the-dark tape and an RP2040 microcontroller to display the time.
Watchy is an open source E-Ink Smartwatch with an MIT license. Development resources and documentation can be found on the official website watchy.sqfmi.com. There are also several retailers selling the watch hardware. See the documentation for instructions on how to get started with developing for Watchy.
