Juno Watch - I Built a LED Watch With a 42-Year Battery Using Ultra Low Power AVR MCU w/ NATO Strap
10 Reasons Why This Is The Best LED Watch: (Following text is generated by AI based on a lot of my input text. Accurate for the most part!)
Unprecedented 42-Year Battery Life: Powered by a single cell battery, this watch boasts a theoretical battery life of up to 24 years in its default "off" mode and 10 months even with the display continuously on, a feat unmatched by virtually any other watch on the market.
Revolutionary Ultra-Minimalist Design: The entire circuit is a marvel of engineering, using only 6 components beside the 12 LEDs to create a fully functional, sophisticated timepiece, proving extreme simplicity can yield extreme performance.
Patented LED Control Technology: It uses a unique microcontroller technique to control brightness and even simulate color spectrums by precisely modulating the minuscule amount of time each LED is turned on, making it visible to the human eye but invisible to standard camera shutters.
Multiple Intelligent Display Modes: With 6 refined display modes, you can choose how to view the time (e.g., hours in red and minutes in green/blue, or both in red) and at different brightness levels, offering both functionality and customization.
Purpose-Built Low-Power Modes: It features a default "Display OFF" mode for maximum efficiency, an "indoor" low-brightness mode, and an "outdoor" high-brightness mode, ensuring power is only used exactly when and how you need it.
Hidden Emergency Flashlight Feature: A clever dual-button press activates all 12 LEDs at once, turning the watch into a reliable, low-power emergency flashlight capable of providing light for up to 42 hours in total darkness.
Optimized, Ergonomic Design: The PCB and watch face are specifically designed to fit a majority of wrists comfortably with a classic and wearable 38mm diameter.
Intuitive Button Operation with Feedback: The two-button system is logically designed for easy time-setting, mode switching, and brightness control, with added LED response feedback to confirm every button press.
Proven and Refined Engineering: This isn't a prototype; it's the result of years of learning and refinement in ultra-low-power design, building on the success of the creator's previous projects to achieve a new peak in efficiency.
Incredible Value for a Masterpiece: Priced at $19.99, this kit represents a significant bargain for the immense amount of engineering innovation, sophisticated software, and practical functionality packed into a final, production-ready product.