Here is a tested Arduino project that uses 3 sensor ... Inside the setup() function we set the sensor pins as INPUT and led pins and motor as OUTPUT. In the loop() we check to see if the water level ...

This is a simple arduino project for a soil moisture sensor that will light up a LED at a ... the soil that has the desired moisture when to light up the LED and signal that the plant needs water.

To the human eye, it looks like multiple LED’s are lit up simultaneously. [Alex] planned to use an Arduino to control this display, but it doesn’t have enough outputs on its own to control all ...