Build a PWM LED Dimmer with Raspberry Pi Pico – Hands-On Analog-to-Digital Control

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Turn a simple knob and watch LEDs glow brighter or dimmer – all controlled by a Raspberry Pi Pico running your very first MicroPython code. This kit turns the abstract idea of pulse‑width modulation into a tangible, satisfying experience. In under two hours you will wire a potentiometer to the Pi Pico's analog input, write a program that reads its rotation, and use PWM to smoothly fade three white LEDs.

What You'll Build

You will build a self-contained dimmer circuit on a breadboard. Twist the potentiometer knob and the three white LEDs instantly respond – from fully off to maximum brightness and every subtle step in between. The entire circuit is powered by the Pi Pico and programmed by you in MicroPython, giving you complete control over the behaviour.

What You'll Learn

• Read an analog voltage from a potentiometer using the Pi Pico's ADC
• Convert an analog reading into a PWM duty cycle for LED control
• Write a clean MicroPython loop that continuously updates brightness in real time
• Understand the relationship between a physical knob, its digital representation, and the output

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is designed for young makers aged 5–15 who want their first taste of physical computing. It fits perfectly into CBSE Class 6–10 STEM activities, ATL Tinkering Lab challenges, and after‑school tinkering clubs. Parents or mentors can help with the initial setup, and within minutes the child will be turning a knob and controlling lights – a powerful spark for deeper exploration.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.