In the loop () we check to see if the water level has reached any sensor and if so then turn an the corresponding led. We also use the LCD to display HIGH if the water has reached the highest poing, ...

Posted in green hacks Tagged alarm, led, level, meter, transistor, water ← Autonomous RC Car Navigates By Waypoints Hackaday Links: Sunday, June 16th, 2013 → ...

The first is an LED matrix that eleven-year-old Daniyal brought to life using Arduino. In the video, he displays each letter of his name on the 8×8 red LED module and then shows his version of ...