The project involves using a Raspberry Pi Pico microcontroller to control the brightness of an LED based on the position of a potentiometer. The potentiometer, a variable resistor, allows for analog input that can be read by the Pico’s Analog-to-Digital Converter (ADC). This input is then used to adjust the Pulse Width Modulation (PWM) signal sent to the LED, thereby varying its brightness. This application demonstrates basic concepts of analog-to-digital conversion and PWM in embedded systems.