Chicken coop controller. Freeze protection. Quarantine. Outside, Indoor and Water temperature. Web interface. RTC3231. Manual, Lightsensor (Dusk-to-Dawn), Schledule (time), Sunrise-sunset (calculated)
This is my homemade digital anemometer. It is made of cups rotating with a magnet triggering a reed switch. The wires are connected to an Arduino Uno that calculates the time between consecutive pulses (after reed switch debouncing by my arduino software)