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 ...

Components Needed: Arduino board (Arduino Uno) Potentiometer LED Resistor (220 ohms to 1k ohm, for current limiting the LED) Breadboard wires 1-Connect the Potentiometer: -Connect one outer terminal ...

This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer. In my example the whole ...

Circuit Diagram The circuit diagram for ESP32 PWM is given below. The circuit contains a single LED, a resistor, and a 10K potentiometer. The negative pin of LED is connected to the GND of ESP32 ...

Build a simple LPG gas leakage detector using Arduino and MQ-5 sensor. This beginner-friendly project features buzzer and LED alerts, circuit diagram, and complete Arduino code for home safety.