Use this super tiara to boost alertness and shift your circadian rhythms – without chemicals! Updated for the AARP Hacking Menopause contest
A faux Nixie tube style display with an array of 7 LEDs. Creating a 5x7 character matrix.
A brighter UV-light for bar and event staff to scan customers' UV ink and ID cards.
A tiny ESP32 board powered by a coin cell.
Turn your hotel room pillow into a cloud-shaped lamp—or even a gentle, light-based wake-up alarm.
Binary Clock using LED Matrix module (8x8) and presenting many features: time, date, day of week, week of year and also the Moon phase!