The LED’s brightness is controlled with analogWrite(), which varies the voltage to the LED based on the potentiometer’s value. The sensor value and corresponding LED brightness are printed to the ...

This project uses distance sensor to detect the distance between obstacle and the system. The result is displayed on a LED display screen. A red warning LED will light up if the obstacle is too close ...

The block diagram of the motion sensor alarm is shown in Fig. 2. Fig. 1: Author’s prototype Fig. 2: Block diagram of motion sensor alarm Circuit and working. The circuit diagram of the motion sensor ...

We set the potentiometer pin as 0 (A0 on the Arduino Uno board), the CONTROL variable is the voltage that is used to cotrol the led brightness of the speed of the fan. In the setup() function the ...

The Etch a Sketch toy has gone more or less unchanged for over 60 years, but if you’re handy with a soldering iron you can build an upgraded version that swaps aluminum powder for glowing LEDs.