LightInk unveils open-source E-Ink smartwatch with 40-day battery life and solar power
Updated
Updated · Android Authority · Apr 29
LightInk unveils open-source E-Ink smartwatch with 40-day battery life and solar power
6 articles · Updated · Android Authority · Apr 29
The LightInk smartwatch uses an ESP32 microcontroller and draws just 0.5mAh per day, enabling 40 days of use from a 20mAh battery.
Solar charging can provide virtually infinite runtime under optimal conditions. The device supports features like LED, vibration, speaker, GPS, LoRa, touch controls, alarms, and environmental data, though some are still in development.
Designed as a DIY project with files on GitHub, LightInk prioritizes efficiency and minimalism over features, showcasing E-Ink’s potential beyond e-readers and offering a unique alternative to mainstream smartwatches.
Could solar-powered E-Ink wearables make charging our personal devices a thing of the past?
What are the biggest feature trade-offs for a watch that you only charge once a year?
Is there a real market for minimalist smartwatches, or will high-resolution color screens always win?
How does a clever software trick allow this smartwatch to boot in less than one millisecond?
How will next-gen chips change what's possible for battery-powered smart devices?