In the array, 1 means output and 0 means input. After your arduino will send you Configuration done!, you can start controlling your pins. Sending high or HIGH will ask you to input a pin number that ...

At the most an Arduino output pin can supply 40 milliamps. That’s enough to drive an LED or a pager’s vibrating motor, but anything substantial will require some help.

The digitalWrite() function also accepts two arguments, the first being the number of the pin to which we wish to write a value (13 in this example). The second is the value we wish to write. There ...

In the above figure, the connection diagram for the water level sensor with Arduino is shown. We have connected an LED to the PWM pin6 of the Arduino board and the analog output pin of the sensor is ...

The 16×2 LCD unit is directly connected to the Arduino Uno board in 4-bit mode. Data pins of the LCD, namely RS, EN, D4, D5, D6, D7, are connected to Arduino digital pins D7, D6, D5, D4, D3, D2. The ...