RGB LEDs triangular/hexagonal pixels matrix.
This is a 7 Segments counter with arduino
This project uses an ultrasonic sensor to allow a "hand wave" (no touch!) to trigger a series of LED's and the Happy Birthday song twice
The Convertible LED Matrix Clock is a new take on designing LED displays. Its design allows it to be converted into two different modes.
How to build an humidity and temperature meter with time display from an old voltage meter casing.
Simple data logger that stores electrical data (voltage, current, power, energy, etc.) in an SD card, with timestamp for later analysis.
Remember the days when you would sit listening to WWV time signals on your shortwave radio (tick, tick, tick…At the tone, the time will be…)
Interactive snake enclosure that is temperature and humidity controlled and uses lat-long to mimic natural light cycles, with an online cam.