Build a Bass Drop Detector That Triggers a Strobe Relay Effect with Arduino Uno

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

From home DJ to stage performer, imagine a strobe light that fires exactly when the bass drops — no manual button, no delay. This kit transforms a MAX9814 microphone's audio input into a crisp relay trigger, syncing a bank of white LEDs to the most intense low-frequency moments of any track. It's a satisfying introduction to real‑world audio engineering and event tech.

What You'll Build

You'll assemble a circuit that listens through a MAX9814 electret mic amplifier, processes the signal on an Arduino Uno, and activates a relay module whenever the bass energy spikes above a threshold you set. The relay switches power to five bright white LEDs, creating a strobe effect that dances to the music. It's a self-contained, battery‑powered prototype ready for a DJ booth, school exhibition, or Science Hackathon demo.

What You'll Learn

• How to interface an analog microphone amplifier with Arduino's ADC
• Real‑time frequency energy detection using FFT or simple peak‑averaging algorithms
• Controlling a 5V relay as an isolated switch for higher‑power LEDs
• Noise filtering with 100nF capacitors and diode protection on relay coils

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11-12 students exploring physics & computer science in one project, B.Tech ECE/EEE undergraduates building a mini-project for Smart India Hackathon or college fests, and ATL Tinkering Lab mentors introducing signal sensing. Hobbyists who love audio gadgets and DJ lighting will find it a rewarding weekend build.

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.