The first is an LED matrix that eleven-year-old Daniyal brought to life using Arduino. ... to spark a lot of interest in learning to code for hardware! Haya and Taha built a water level sensor.

A low-cost (~$100), do-it-yourself (DIY) ultrasonic water level sensor/datalogger has been designed, constructed, and tested for use in education, citizen/community science, and research settings. The ...

It’s paired with a water level sensor to keep an eye on the water available to the system. Moisture sensors are also used to monitor the prevailing soil conditions, to ensure the plants aren’t ...